Global Drifter Program 3-Hourly, Real-Time, Global Time Series of Peak Wave Period, 2015-Present

Summary:
Global time series of 3-hourly, real-time peak wave period (Tp) measured by Directional Wave Spectra Drifters (DWSDs), where Tp is defined as the frequency of peak wave energy over the observed frequency range, typically from 0.031 to 0.5 Hz, in a 30-minute period. The DWSD drifters are undrogued. Data spans from 2015-present. This file is for Year: 2026; Month: 04. The data was funded by NOAA under the Global Drifter Program and collected and provided by the Lagrangian Drifter Laboratory at Scripps Institution of Oceanography. No quality control has been applied except to indicate missing data values. Data that was reported not on the 3-hourly timestamp have had their timestamp adjusted to 3-hrly if within an hour of the reported time.

cdm_data_type = Point
VARIABLES:
wmo_ID (ID given by World Meteorological Organization)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
peak_period (Sea Surface Wave Period At Variance Spectral Density Maximum, s)


Global Drifter Program 3-Hourly, Real-Time, Global, Time Series of Significant Wave Height, 2015-Present

Summary:
Global time series of 3-hourly, real-time significant wave height (Hs) from Directional Wave Spectra Drifter (DWSD), where Hs is defined as the average height of 1/3 of the largest waves in a 30-minute period. The DWSD drifters are undrogued. Data spans from 2015-present. This file is for Year: 2026; Month: 04. The data was funded by NOAA under the Global Drifter Program and collected and provided by the Lagrangian Drifter Laboratory at Scripps Institution of Oceanography. No quality control has been applied except to indicate missing data values. Data that was reported not on the 3-hourly timestamp have had their timestamp adjusted to 3-hrly if within an hour of the reported time.

cdm_data_type = Point
VARIABLES:
wmo_ID (ID given by World Meteorological Organization)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
significant_wave_height (m)


Global Drifter Program 3-Hourly, Real-Time, Time Series of Mean Wave Period, 2015-present

Summary:
Global time series of 3-hourly, real-time mean wave period (Ta) measured by Directional Wave Spectra Drifters (DWSDs), where Ta is defined as the frequency of mean wave energy averaged over the observed frequency range, typically from 0.031 to 0.5 Hz, in a 30-minute period. The DWSD drifters are undrogued. Data spans from 2015-present. This file is for Year: 2026; Month: 04. The data was funded by NOAA under the Global Drifter Program and collected and provided by the Lagrangian Drifter Laboratory at Scripps Institution of Oceanography. No quality control has been applied except to indicate missing data values. Data that was reported not on the 3-hourly timestamp have had their timestamp adjusted to 3-hrly if within an hour of the reported time.

cdm_data_type = Point
VARIABLES:
wmo_ID (ID given by World Meteorological Organization)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
average_period (Sea Surface Wave Mean Period, s)


Global Drifter Program Hourly, Real-Time, Global, Time Series of Atmospheric Pressure at Sea Level, 2015-Present

Summary:
Hourly, real-time, global time series of sea-level pressure (SLP) from Surface Velocity Program (SVP) Lagrangian drifters drogued at 15 m depth. Data spans from 2015-present. This file is for Year: 2026; Month: 04. The data was funded by NOAA under the Global Drifter Program and collected and provided by the Lagrangian Drifter Laboratory at Scripps Institution of Oceanography. No quality control has been applied except to indicate missing data values. Data that was reported not on the hour timestamp (e.g., a few minutes after) have had the timestamp adjusted to hourly.

cdm_data_type = Point
VARIABLES:
wmo_ID (ID given by World Meteorological Organization)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
sea_level_pressure (atmospheric pressure at sea level, hPa)


Global Drifter Program Hourly, Real-Time, Global, Time Series of Lagrangian Drifter Locations at 15 m Depth. 2015-Present

Summary:
Hourly, real-time, global time series of Surface Velocity Program (SVP) Lagrangian drifters drogued at at 15 m depth, from which near-surface currents can be derived. Data spans from 2015-present. This file is for Year: 2026; Month: 04. The data was funded by NOAA under the Global Drifter Program and collected and provided by the Lagrangian Drifter Laboratory at Scripps Institution of Oceanography. No quality control has been applied except to indicate missing data values. Data that was reported not on the hour timestamp (e.g., a few minutes after) have had the timestamp adjusted to hourly.

cdm_data_type = Point
VARIABLES:
wmo_ID (ID given by World Meteorological Organization)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
drogue (drogue strain indicator)


Global Drifter Program Hourly, real-time, global, time series of SST, 2015-present

Summary:
Global Drifter Program Hourly, real-time, global, time series of sea surface temperature, 2015-present. Hourly, real-time, global, time series of sea-surface temperature (SST) from Surface Velocity Program (SVP) Lagrangian drifters drogued at at 15 m depth. Data spans from 2015-present. This file is for Year: 2026; Month: 04. The data was funded by NOAA under the Global Drifter Program and collected and provided by the Lagrangian Drifter Laboratory at Scripps Institution of Oceanography. This dataset encompasses one month of surface drifter locations. No quality control has been applied except to indicate missing data values. Data that was reported not on the hour timestamp (e.g., a few minutes after) have had the timestamp adjusted to hourly.

cdm_data_type = Point
VARIABLES:
wmo_ID (ID given by World Meteorological Organization)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
sea_surface_temperature (near-surface sea surface temperature, 0.184 m below sea surface for SVP/B/V, DWS/B, and 0.45 m for A-size DWS), degree_C)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography 2019 MISO-BOB Drifter Data

Summary:
Drifter Data used in the paper, "Observing and modeling the variability in diurnal warm layers due to winds, advection and optics in the Bay of Bengal"

cdm_data_type = Other
VARIABLES:
id (Drifter ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
temperature (Sea Surface Temperature, deg C)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography 2022 CALYPSO DWS Drifter Data

Summary:
The data of all the Directional-Wave-Spectra (DWS; https://gdp.ucsd.edu/ldl/dwsd/) drifters deployed during the CALYPSO22 cruise in the Balearic Sea were processed to give positions (latitude and longitude), zonal and meridional velocities, and sea surface temperature (SST) records at uniform and common times (no processing of wave data). The processing was done on the data between the deployment times and 2 Feb. 2023. The CALYPSO22 raw drifter data were edited to exclude data before deployment and to remove obvious outliers using the method described in Menna et al. (2017). If a drifter was recovered and redeployed, the data were separated into two files. Even though the nominal sampling period was as small as 5 min., gaps without data for longer periods occurred in the time series. In case of temporary stranding or pick-up and for gaps larger than ~1 day the time series were split into separate files. For some drifters with transmission problems and numerous data gaps, the records were simply cut at the first occurrence of a gap. The edited data were linearly interpolated at 5-min. intervals. Velocities were estimated by central finite differences of the interpolated positions. Finally, the data were low- pass filtered with a Hamming window of 30 and 60 minutes.

cdm_data_type = Trajectory
VARIABLES:
id (Trajectory ID)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees_north)
latf30 (Latitude, degrees_north)
latf60 (Latitude, degrees_north)
longitude (degrees_east)
lonf30 (Longitude, degrees_east)
lonf60 (Longitude, degrees_east)
u (cm/s)
uf30 (cm/s)
uf60 (cm/s)
v (cm/s)
vf30 (cm/s)
vf60 (cm/s)
... (5 more variables)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography 2022 CALYPSO SVP Drifter Data

Summary:
The data of all the Surface-Velocity-Program (SVP; https://gdp.ucsd.edu/ldl/svp/) drifters deployed during the CALYPSO22 cruise in the Balearic Sea were processed to give positions (latitude and longitude), zonal and meridional velocities, and sea surface temperature (SST) records at uniform and common times. The processing was done on the data between the deployment times and 2 Feb. 2023, at which date only 5 SVP drifters were still alive. The CALYPSO22 raw drifter data were edited to exclude data before deployment and to remove obvious outliers using the method described in Menna et al. (2017). If a drifter was recovered and redeployed, the data were separated into two files. Even though the nominal sampling period was as small as 5 min., gaps without data for longer periods occurred in the time series. In case of temporary stranding or pick-up and for gaps larger than ~1 day the time series were split into separate files. For some drifters with transmission problems and numerous data gaps, the records were simply cut at the first occurrence of a gap. The edited data were linearly interpolated at 5-min. intervals. Velocities were estimated by central finite differences of the interpolated positions. Finally, the data were low- pass filtered with a Hamming window of 30 and 60 minutes.

cdm_data_type = Trajectory
VARIABLES:
id (Trajectory ID)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees_north)
latf30 (Latitude, degrees_north)
latf60 (Latitude, degrees_north)
longitude (degrees_east)
lonf30 (Longitude, degrees_east)
lonf60 (Longitude, degrees_east)
u (cm/s)
uf30 (cm/s)
uf60 (cm/s)
v (cm/s)
vf30 (cm/s)
vf60 (cm/s)
... (5 more variables)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography CALYPSO DWSD First-Five Data

Summary:
CALYPSO DWSD First-Five data

cdm_data_type = Other
VARIABLES:
platform_ID
frequency (Wave Frequency, Hz)
b2 (Second-directional Fourier coefficient, b2)
a2 (Second-directional Fourier coefficient, a2)
a0 (Non-directional wave energy, m^{2} Hz^{-1})
time (seconds since 1970-01-01T00:00:00Z)
a1 (First-directional Fourier coefficient, a1)
b1 (First-directional Fourier coefficient, b1)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography CALYPSO DWSD Sensor Data

Summary:
CALYPSO DWSD Sensor data

cdm_data_type = Point
VARIABLES:
platform_ID
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
time (seconds since 1970-01-01T00:00:00Z)
significant_wave_height (m)
sea_surface_temperature (degree_C)
average_period (Sea Surface Wave Mean Period, s)
peak_period (Sea Surface Wave Period At Variance Spectral Density Maximum, s)
dominant_direction (Sea Surface Wave Direction At Variance Spectral Density Maximum, degrees clockwise from north, waves coming from)
aggregate_wave_quality_flag (cumulative sum of quality flags for wave observation, 0 (no flags - good) to 12 (all flags - bad))
wave_qcflag1 (quality flag for significant wave height (Hs) > 4 standard deviations from mean(Hs), 0 (false) or 1 (true))
wave_qcflag2 (quality flag for average period (Ta) > 4 standard deviations from mean(Ta), 0 (false) or 1 (true))
wave_qcflag3 (quality flag for spiking significant wave height (Hs-(three-point median filter of Hs) > 4 standard deviations, 0 (false) or 1 (true))
wave_qcflag4 (quality flag for first value of a0 > 4 standard deviations from mean of first value a0, 0 (false) or 1 (true))
wave_qcflag5 (quality flag for second value of a0 > 4 standard deviations from mean of second value a0, 0 (false) or 1 (true))
wave_qcflag6 (quality flag for third value of a0 > 4 standard deviations from mean of third value a0, 0 (false) or 1 (true))
wave_qcflag7 (quality flag for gradient a0(1) to a0(2) > 4 standard deviations from mean(gradient a0(1) to a0(2)), 0 (false) or 1 (true))
wave_qcflag8 (quality flag for gradient a0(2) to a0(3) > 4 standard deviations from mean(gradient a0(2) to a0(3)), 0 (false) or 1 (true))
wave_qcflag9 (quality flag for gradient a0(3) to a0(4) > 4 standard deviations from mean(gradient a0(3) to a0(4)), 0 (false) or 1 (true))
wave_qcflag10 (quality flag for less than 95% of data reporting, 0 (false) or 1 (true))
wave_qcflag11 (quality flag for spectral wave density: frequency bands above 0.08 Hz do not change more 0.006f-4 m2/Hz in one hour, 0 (false) or 1 (true))
wave_qcflag12 (quality flag for low-power mode: only one segment recorded leading to low spectra certainty, 0 (false) or 1 (true))


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography CALYPSO SVP Drifter Data

Summary:
Includes hourly drifter time, location and sea-surface temperature. The data are quality controlled to eliminate temperature and GPS location spikes (using 3 standard deviations for each temperature and speed) and land.  A drogue variable is included. A change in the baseline drogue may indicate a change in the drogue status, such as the drogue becoming unattached.

cdm_data_type = Point
VARIABLES:
drogue (drogue strain indicator)
time (seconds since 1970-01-01T00:00:00Z)
latitude (degrees north, degrees_north)
platform_ID
longitude (degrees east, degrees_east)
sea_surface_temperature (near-surface sea surface temperature, 0.184 m below sea surface for SVP/B/V, DWS/B, and 0.45 m for A-size DWS), degree_C)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Directional Wave Spectra Drifter (DWSD) NOPP Hurricane Coastal Impacts First5 Data: Targeted Storms 2022-2024

Summary:
First-Five File - National Ocean Partnership Program (NOPP) DWSD

cdm_data_type = Other
VARIABLES:
platform_ID
frequency (Wave Frequency, Hz)
b2 (Second-directional Fourier coefficient, b2)
a2 (Second-directional Fourier coefficient, a2)
a0 (Non-directional wave energy, m^{2} Hz^{-1})
time (seconds since 1970-01-01T00:00:00Z)
a1 (First-directional Fourier coefficient, a1)
b1 (First-directional Fourier coefficient, b1)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Directional Wave Spectra Drifter (DWSD) NOPP Hurricane Coastal Impacts Sensor Data: Targeted Storms 2022-2024

Summary:
Sensor File - National Ocean Partnership Program (NOPP) DWSD

cdm_data_type = Point
VARIABLES:
platform_ID
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
time (seconds since 1970-01-01T00:00:00Z)
significant_wave_height (m)
sea_surface_temperature (near-surface sea surface temperature, 0.184 m below sea surface for DWSD and 0.45 m for A-size DWSD), degree_C)
sea_level_pressure (air pressure 0.3 m above sea-surface, hPa)
average_period (Sea Surface Wave Mean Period, s)
peak_period (Sea Surface Wave Period At Variance Spectral Density Maximum, s)
dominant_direction (Sea Surface Wave Direction At Variance Spectral Density Maximum, degrees clockwise from north, waves coming from)
aggregate_wave_quality_flag (cumulative sum of quality flags for wave observation, 0 (no flags - good) to 12 (all flags - bad))
wave_qcflag1 (quality flag for significant wave height (Hs) > 4 standard deviations from mean(Hs), 0 (false) or 1 (true))
wave_qcflag2 (quality flag for average period (Ta) > 4 standard deviations from mean(Ta), 0 (false) or 1 (true))
wave_qcflag3 (quality flag for spiking significant wave height (Hs-(three-point median filter of Hs) > 4 standard deviations, 0 (false) or 1 (true))
wave_qcflag4 (quality flag for first value of a0 > 4 standard deviations from mean of first value a0, 0 (false) or 1 (true))
wave_qcflag5 (quality flag for second value of a0 > 4 standard deviations from mean of second value a0, 0 (false) or 1 (true))
wave_qcflag6 (quality flag for third value of a0 > 4 standard deviations from mean of third value a0, 0 (false) or 1 (true))
wave_qcflag7 (quality flag for gradient a0(1) to a0(2) > 4 standard deviations from mean(gradient a0(1) to a0(2)), 0 (false) or 1 (true))
wave_qcflag8 (quality flag for gradient a0(2) to a0(3) > 4 standard deviations from mean(gradient a0(2) to a0(3)), 0 (false) or 1 (true))
wave_qcflag9 (quality flag for gradient a0(3) to a0(4) > 4 standard deviations from mean(gradient a0(3) to a0(4)), 0 (false) or 1 (true))
wave_qcflag10 (quality flag for less than 95% of data reporting, 0 (false) or 1 (true))
wave_qcflag11 (quality flag for spectral wave density: frequency bands above 0.08 Hz do not change more 0.006f-4 m2/Hz in one hour, 0 (false) or 1 (true))
wave_qcflag12 (quality flag for low-power mode: only one segment recorded leading to low spectra certainty, 0 (false) or 1 (true))


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography EKAMSAT-ASTRAL DWSD First-5 Data

Summary:
EKAMSAT-ASTRAL DWSD: First-Five data from Directional wave spectra for Directional Wave Spectra Drifters (DWSD).

cdm_data_type = Other
VARIABLES:
platform_ID
time (seconds since 1970-01-01T00:00:00Z)
frequency (Wave Frequency, Hz)
a0 (Non-directional wave energy, m^{2} Hz^{-1})
a1 (First-directional Fourier coefficient, a1)
b1 (First-directional Fourier coefficient, b1)
a2 (Second-directional Fourier coefficient, a2)
b2 (Second-directional Fourier coefficient, b2)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography EKAMSAT-ASTRAL DWSD Sensor Data

Summary:
EKAMSAT-ASTRAL DWSD: Sensor data from  Directional Wave Spectra Drifters (DWSD).

cdm_data_type = Point
VARIABLES:
platform_ID
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
time (seconds since 1970-01-01T00:00:00Z)
significant_wave_height (m)
sea_surface_temperature (degree_C)
average_period (Sea Surface Wave Mean Period, s)
peak_period (Sea Surface Wave Period At Variance Spectral Density Maximum, s)
dominant_direction (Sea Surface Wave Direction At Variance Spectral Density Maximum, degrees clockwise from north, waves coming from)
aggregate_wave_quality_flag (cumulative sum of quality flags for wave observation, 0 (no flags - good) to 12 (all flags - bad))
wave_qcflag1 (quality flag for significant wave height (Hs) > 4 standard deviations from mean(Hs), 0 (false) or 1 (true))
wave_qcflag2 (quality flag for average period (Ta) > 4 standard deviations from mean(Ta), 0 (false) or 1 (true))
wave_qcflag3 (quality flag for spiking significant wave height (Hs-(three-point median filter of Hs) > 4 standard deviations, 0 (false) or 1 (true))
wave_qcflag4 (quality flag for first value of a0 > 4 standard deviations from mean of first value a0, 0 (false) or 1 (true))
wave_qcflag5 (quality flag for second value of a0 > 4 standard deviations from mean of second value a0, 0 (false) or 1 (true))
wave_qcflag6 (quality flag for third value of a0 > 4 standard deviations from mean of third value a0, 0 (false) or 1 (true))
wave_qcflag7 (quality flag for gradient a0(1) to a0(2) > 4 standard deviations from mean(gradient a0(1) to a0(2)), 0 (false) or 1 (true))
wave_qcflag8 (quality flag for gradient a0(2) to a0(3) > 4 standard deviations from mean(gradient a0(2) to a0(3)), 0 (false) or 1 (true))
wave_qcflag9 (quality flag for gradient a0(3) to a0(4) > 4 standard deviations from mean(gradient a0(3) to a0(4)), 0 (false) or 1 (true))
wave_qcflag10 (quality flag for less than 95% of data reporting, 0 (false) or 1 (true))
wave_qcflag11 (quality flag for spectral wave density: frequency bands above 0.08 Hz do not change more 0.006f-4 m2/Hz in one hour, 0 (false) or 1 (true))
wave_qcflag12 (quality flag for low-power mode: only one segment recorded leading to low spectra certainty, 0 (false) or 1 (true))


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography GDP GTS Data

Summary:
Lagrangian Drifter Laboratory (LDL) at Scripps Institution of Oceanography Global Drifter Program observations of sea surface temperature, sea level pressure, integral wave parameters reported onto the GTS under IOBX02 KWBC and IOWX02 KWBC

cdm_data_type = Other
VARIABLES:
platform_code
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
salinity (Sea Water Practical Salinity, PSU)
conductivity (Sea Water Electrical Conductivity)
gpsfixdel (Gps Fix Del)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
domwavedir (Sea Surface Wave To Direction, degree)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography GTS Atlantic Hurricane 2021 Data

Summary:
Scripps Institution of Oceanography's Lagrangian Drifter Lab (LDL) drifter observations from 0°N to 40°N and 100°W to 40°W that were reported to the GTS from June 2021 to November 2021

cdm_data_type = Other
VARIABLES:
platform_code
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
salinity (Sea Water Practical Salinity, PSU)
conductivity (Sea Water Electrical Conductivity)
gpsfixdel (Gps Fix Del)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
domwavedir (Sea Surface Wave To Direction, degree)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography GTS Atlantic Hurricane 2022 Data

Summary:
Scripps Institution of Oceanography's Lagrangian Drifter Lab (LDL) drifter observations from 0°N to 40°N and 100°W to 40°W that were reported to the GTS from June 2022 to November 2022

cdm_data_type = Other
VARIABLES:
platform_code
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
salinity (Sea Water Practical Salinity, PSU)
conductivity (Sea Water Electrical Conductivity)
gpsfixdel (Gps Fix Del)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
domwavedir (Sea Surface Wave To Direction, degree)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography GTS Atlantic Hurricane 2023 Data

Summary:
Scripps Institution of Oceanography's Lagrangian Drifter Lab (LDL) drifter observations from 0°N to 40°N and 100°W to 40°W that were reported to the GTS from June 2023 to November 2023

cdm_data_type = Other
VARIABLES:
platform_code
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
salinity (Sea Water Practical Salinity, PSU)
conductivity (Sea Water Electrical Conductivity)
gpsfixdel (Gps Fix Del)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
domwavedir (Sea Surface Wave To Direction, degree)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography GTS Atlantic Hurricane 2024 Data

Summary:
Scripps Institution of Oceanography's Lagrangian Drifter Lab (LDL) drifter observations from 0°N to 40°N and 100°W to 40°W that were reported to the GTS from June 2024 to November 2024

cdm_data_type = Other
VARIABLES:
platform_code
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
salinity (Sea Water Practical Salinity, PSU)
conductivity (Sea Water Electrical Conductivity)
gpsfixdel (Gps Fix Del)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
domwavedir (Sea Surface Wave To Direction, degree)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography GTS Atlantic Hurricane 2025 Data

Summary:
Scripps Institution of Oceanography's Lagrangian Drifter Lab (LDL) drifter observations from 0°N to 40°N and 100°W to 40°W that were reported to the GTS from June 2025 to November 2025

cdm_data_type = Other
VARIABLES:
platform_code
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
salinity (Sea Water Practical Salinity, PSU)
conductivity (Sea Water Electrical Conductivity)
gpsfixdel (Gps Fix Del)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
domwavedir (Sea Surface Wave To Direction, degree)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Hurricane Erin A-size Directional Wave Spectra Drifter (ADWSD) and SASCWATCH A-size Directional Wave Spectra Barometer Drifter (ADWSBD) First-Five Data

Summary:
First-Five Directional wave spectra from A-size Directional Wave Spectra Drifter (ADWSD)

cdm_data_type = Other
VARIABLES:
platform_ID
frequency (Wave Frequency, Hz)
b2 (Second-directional Fourier coefficient, b2)
a2 (Second-directional Fourier coefficient, a2)
a0 (Non-directional wave energy, m^{2} Hz^{-1})
time (seconds since 1970-01-01T00:00:00Z)
a1 (First-directional Fourier coefficient, a1)
b1 (First-directional Fourier coefficient, b1)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Hurricane Erin A-size Directional Wave Spectra Drifter (ADWSD) and SASCWATCH A-size Directional Wave Spectra Barometer Drifter (ADWSBD) Sensor Data

Summary:
Sensor data from A-size Directional Wave Spectra Drifter (ADWSD)

cdm_data_type = Point
VARIABLES:
platform_ID
latitude (degrees north, degrees_north)
longitude (degrees east, degrees_east)
time (seconds since 1970-01-01T00:00:00Z)
significant_wave_height (m)
sea_surface_temperature (degree_C)
sea_level_pressure (hPa)
average_period (Sea Surface Wave Mean Period, s)
peak_period (Sea Surface Wave Period At Variance Spectral Density Maximum, s)
dominant_direction (Sea Surface Wave Direction At Variance Spectral Density Maximum, degrees clockwise from north, waves coming from)
aggregate_wave_quality_flag (cumulative sum of quality flags for wave observation, 0 (no flags - good) to 12 (all flags - bad))
wave_qcflag1 (quality flag for significant wave height (Hs) > 4 standard deviations from mean(Hs), 0 (false) or 1 (true))
wave_qcflag2 (quality flag for average period (Ta) > 4 standard deviations from mean(Ta), 0 (false) or 1 (true))
wave_qcflag3 (quality flag for spiking significant wave height (Hs-(three-point median filter of Hs) > 4 standard deviations, 0 (false) or 1 (true))
wave_qcflag4 (quality flag for first value of a0 > 4 standard deviations from mean of first value a0, 0 (false) or 1 (true))
wave_qcflag5 (quality flag for second value of a0 > 4 standard deviations from mean of second value a0, 0 (false) or 1 (true))
wave_qcflag6 (quality flag for third value of a0 > 4 standard deviations from mean of third value a0, 0 (false) or 1 (true))
wave_qcflag7 (quality flag for gradient a0(1) to a0(2) > 4 standard deviations from mean(gradient a0(1) to a0(2)), 0 (false) or 1 (true))
wave_qcflag8 (quality flag for gradient a0(2) to a0(3) > 4 standard deviations from mean(gradient a0(2) to a0(3)), 0 (false) or 1 (true))
wave_qcflag9 (quality flag for gradient a0(3) to a0(4) > 4 standard deviations from mean(gradient a0(3) to a0(4)), 0 (false) or 1 (true))
wave_qcflag10 (quality flag for less than 95% of data reporting, 0 (false) or 1 (true))
wave_qcflag11 (quality flag for spectral wave density: frequency bands above 0.08 Hz do not change more 0.006f-4 m2/Hz in one hour, 0 (false) or 1 (true))
wave_qcflag12 (quality flag for low-power mode: only one segment recorded leading to low spectra certainty, 0 (false) or 1 (true))


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Hurricane Michael (2018) Drifter Data

Summary:
Lagrangian Drifter Laboratory (LDL) at Scripps Institution of Oceanography drifter observations of sea surface temperature, sea level pressure, wind and averaged wave properties under Hurricane Michael from 08-OCT-2018 to 15-OCT-2018

cdm_data_type = Other
VARIABLES:
PlatformId (Platform ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
SLP (Sea Level Air Pressure, hPa)
SST (deg C)
Tp (Sea Surface Swell Wave Peak Period, s)
Hs (Significant Wave Height, m)
Dd (Sea Surface Wave To Direction, degree)
WSpd (Wind Speed, m/s)
WDir (Wind From Direction, degree)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Hurricane Michael (2018) First-Five Wave Data

Summary:
Lagrangian Drifter Laboratory (LDL) at Scripps Institution of Oceanography first-five spectral coefficients observed by directional wave spectra drifters under Hurricane Michael from 08-OCT-2018 to 15-OCT-2018.

cdm_data_type = Other
VARIABLES:
PlatformId (Platform ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
Frequency (Freqency, Hz)
a0 (Non-Directional Energy, m^2/Hz)
a1 (Directional a1)
b1 (Directional b1)
m1 (Directional m1)
a2 (Directional a2)
b2 (Directional b2)
m2 (Directional m2)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography NOPP 2022 Data

Summary:
ONR NOPP drifter observations within 0°N to 50°N and 100°W to 40°W between 2022-04-30 and 2022-11-30

cdm_data_type = Other
VARIABLES:
platform_id
wmo (WMO ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
gpsfixdel (Gps Fix Del, min)
gpsttff (GPS TTFF, s)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
avgwavedir (Sea Surface Wave To Direction)
domwavedir (Sea Surface Wave To Direction, degree)
wavequality (Sea Surface Wave Quality, percent)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography NOPP 2022 First5 Wave Data

Summary:
ONR NOPP drifter wave observations within 0°N to 50°N and 100°W to 40°W between 2022-04-30 and 2022-11-30

cdm_data_type = Other
VARIABLES:
platform_id
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
frequency (Freqency, Hz)
a0 (Non-Directional Energy, m^2/Hz)
a1 (Directional a1)
b1 (Directional b1)
a2 (Directional a2)
b2 (Directional b2)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography NOPP 2023 Data

Summary:
ONR NOPP drifter observations within 0°N to 50°N and 100°W to 40°W between 2023-04-30 and 2023-11-30

cdm_data_type = Other
VARIABLES:
platform_id
wmo (WMO ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
gpsfixdel (Gps Fix Del, min)
gpsttff (GPS TTFF, s)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
avgwavedir (Sea Surface Wave To Direction)
domwavedir (Sea Surface Wave To Direction, degree)
wavequality (Sea Surface Wave Quality, percent)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography NOPP 2023 First5 Wave Data

Summary:
ONR NOPP drifter wave observations within 0°N to 50°N and 100°W to 40°W between 2023-04-30 and 2023-11-30

cdm_data_type = Other
VARIABLES:
platform_id
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
frequency (Freqency, Hz)
a0 (Non-Directional Energy, m^2/Hz)
a1 (Directional a1)
b1 (Directional b1)
a2 (Directional a2)
b2 (Directional b2)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography NOPP 2024 Data

Summary:
ONR NOPP drifter observations within 0°N to 50°N and 100°W to 40°W between 2024-04-30 and 2024-11-30

cdm_data_type = Other
VARIABLES:
platform_id
wmo (WMO ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
gpsfixdel (Gps Fix Del, min)
gpsttff (GPS TTFF, s)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
avgwavedir (Sea Surface Wave To Direction)
domwavedir (Sea Surface Wave To Direction, degree)
wavequality (Sea Surface Wave Quality, percent)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography NOPP 2024 First5 Wave Data

Summary:
ONR NOPP drifter wave observations within 0°N to 50°N and 100°W to 40°W between 2024-04-30 and 2024-11-30

cdm_data_type = Other
VARIABLES:
platform_id
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
frequency (Freqency, Hz)
a0 (Non-Directional Energy, m^2/Hz)
a1 (Directional a1)
b1 (Directional b1)
a2 (Directional a2)
b2 (Directional b2)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography NORSE Drifter Data

Summary:
Lagrangian Drifter Laboratory (LDL) at Scripps Institution of Oceanography NORSE drifter observations of sea surface temperature, sea level pressure, averaged wave properties

cdm_data_type = Other
VARIABLES:
platform_id
wmo (WMO ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
tos (Iridium Time of Session, seconds since 1970-01-01T00:00:00Z)
momsn (Iridium MOMSN)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
gpsHDOP (GPS HDOP)
gpsNumSat (GPS Number of Satellites)
windSpd (Wind Spd, m/s)
windDir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
iridiumXmitDur (Iridium Transmit Duration)
iridiumRetry (Iridium Retry)
iridiumRSSI (Iridium RSSI)
gpsFixDel (Gps Fix Del, min)
gpsTTFF (GPS TTFF, s)
AvgWavePeriod (Sea Surface Swell Wave Period, s)
SigWaveHt (Significant Wave Height, m)
DomWavePeriod (Sea Surface Swell Wave Period, s)
AvgWaveDir (Sea Surface Wave To Direction)
DomWaveDir (Sea Surface Wave To Direction, degree)
hullHumidity (Hull Humidity)
hullPressure (Hull Pressure)
hullTemperature (Hull Temperature)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography SASCWATCH Data

Summary:
ONR SASCWATCH drifter observations

cdm_data_type = Other
VARIABLES:
platform_id
wmo (WMO ID)
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
latitude (GPS Latitude, degrees_north)
longitude (GPS Longitude, degrees_east)
windspd (Wind Spd, m/s)
winddir (Wind From Direction, degree)
slp (hPa)
drogue
sst (deg C)
battery (volts)
presdiff (Pres Diff, hPa)
gpsfixdel (Gps Fix Del, min)
gpsttff (GPS TTFF, s)
avgwaveperiod (Sea Surface Swell Wave Period, s)
wvht (Sig Wave Ht, m)
domwaveperiod (Sea Surface Swell Wave Period, s)
avgwavedir (Sea Surface Wave To Direction)
domwavedir (Sea Surface Wave To Direction, degree)
wavequality (Sea Surface Wave Quality, percent)


Lagrangian Drifter Laboratory at Scripps Institution of Oceanography SASCWATCH First5 Wave Data

Summary:
ONR SASCWATCH drifter wave observations

cdm_data_type = Other
VARIABLES:
platform_id
time (GPS Timestamp, seconds since 1970-01-01T00:00:00Z)
frequency (Freqency, Hz)
a0 (Non-Directional Energy, m^2/Hz)
a1 (Directional a1)
b1 (Directional b1)
a2 (Directional a2)
b2 (Directional b2)