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| Dataset Title: | RSS CCMP V3.1 6-hourly surface winds (Level 4)
|
| Institution: | RSS (Dataset ID: ccmp_31) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Files
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Attributes {
time {
String _CoordinateAxisType "Time";
Float64 actual_range 7.259328e+8, 1.706724e+9;
String axis "T";
String coverage_content_type "coordinate";
String delta_t "0000-00-00 06:00:00";
String ioos_category "Time";
String long_name "time of analysis";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
Float32 valid_max 325074.0;
Float32 valid_min 325056.0;
}
latitude {
String _CoordinateAxisType "Lat";
Float32 actual_range -89.875, 89.875;
String axis "Y";
String coordinate_defines "center";
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
Float32 valid_max 90.0;
Float32 valid_min -90.0;
}
longitude {
String _CoordinateAxisType "Lon";
Float32 actual_range 0.125, 359.875;
String axis "X";
String coordinate_defines "center";
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
Float32 valid_max 360.0;
Float32 valid_min 0.0;
}
uwnd {
Float32 _FillValue -9999.0;
String ancillary_variables "nobs";
Float64 colorBarMaximum 15.0;
Float64 colorBarMinimum -15.0;
String coverage_content_type "physicalMeasurement";
String height "10 meters above sea-surface";
String ioos_category "Wind";
String long_name "u-wind vector component at 10 meters";
String standard_name "eastward_wind";
String units "m s-1";
Float32 valid_max 100.0;
Float32 valid_min -100.0;
}
vwnd {
Float32 _FillValue -9999.0;
String ancillary_variables "nobs";
Float64 colorBarMaximum 15.0;
Float64 colorBarMinimum -15.0;
String coverage_content_type "physicalMeasurement";
String height "10 meters above sea-surface";
String ioos_category "Wind";
String long_name "v-wind vector component at 10 meters";
String standard_name "northward_wind";
String units "m s-1";
Float32 valid_max 100.0;
Float32 valid_min -100.0;
}
ws {
Float32 _FillValue -9999.0;
String ancillary_variables "nobs";
Float64 colorBarMaximum 15.0;
Float64 colorBarMinimum 0.0;
String coverage_content_type "physicalMeasurement";
String height "10 meters above sea-surface";
String ioos_category "Wind";
String long_name "wind speed at 10 meters";
String standard_name "wind_speed";
String units "m s-1";
Float32 valid_max 140.0;
Float32 valid_min 0.0;
}
nobs {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String coverage_content_type "auxiliaryInformation";
String ioos_category "Statistics";
String long_name "number of observations used to derive wind vector components";
String standard_name "number_of_observations";
Float32 valid_max 100.0;
Float32 valid_min 0.0;
}
NC_GLOBAL {
String base_date "Y2024 M01 D31";
String cdm_data_type "Grid";
String contact "Remote Sensing Systems, support@remss.com";
String contributor_name "Carl Mears, Tong Lee, Frank Wentz";
String contributor_role "Principal-Investigator, Co-Investigator, Co-Investigator";
String Conventions "CF-1.10, ACDD-1.3, COARDS";
String creator_email "support@remss.com";
String creator_name "Remote Sensing Systems";
String creator_type "institution";
String creator_url "http://www.remss.com/";
String data_structure "grid";
String date_created "2024-04-02T03:02:33.958960Z";
String doi "10.5067/CCMP-6HW10M-L4V31";
Float64 Easternmost_Easting 359.875;
Float64 geospatial_lat_max 89.875;
Float64 geospatial_lat_min -89.875;
Float64 geospatial_lat_resolution 0.25;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 359.875;
Float64 geospatial_lon_min 0.125;
Float64 geospatial_lon_resolution 0.25;
String geospatial_lon_units "degrees_east";
String history
"2024-04-02T03:02:33.958960Z - netCDF generated from original data using Python 3.10 and xarray RSS using files: P:\\CCMP\\MEaSUREs\\era5_current_corrected_adj4_v31\\v3.1\\native\\y2024\\M01\\D31\\vam_v3.1.analysis.t20240131.z00.dat,P:\\CCMP\\MEaSUREs\\era5_current_corrected_adj4_v31\\v3.1\\native\\y2024\\M01\\D31\\vam_v3.1.analysis.t20240131.z06.dat,P:\\CCMP\\MEaSUREs\\era5_current_corrected_adj4_v31\\v3.1\\native\\y2024\\M01\\D31\\vam_v3.1.analysis.t20240131.z12.dat,
2025-11-16T22:10:52Z (local files)
2025-11-16T22:10:52Z https://coastwatch.pfeg.noaa.gov/erddap/griddap/ccmp_31.das";
String infoUrl "http://www.remss.com/";
String institute_id "RSS";
String institution "RSS";
String instrument "Earth Remote Sensing Instruments>Passive Remote Sensing>Spectrometers/Radiometers>Imaging Spectrometers/Radiometers>SSMIS, Earth Remote Sensing Instruments>Passive Remote Sensing>Spectrometers/Radiometers>Imaging Spectrometers/Radiometers>SSMIS, Earth Remote Sensing Instruments>Passive Remote Sensing>Spectrometers/Radiometers>Imaging Spectrometers/Radiometers>SSMIS, Earth Remote Sensing Instruments>Passive Remote Sensing>Spectrometers/Radiometers>Imaging Spectrometers/Radiometers>AMSRE, Earth Remote Sensing Instruments>Passive Remote Sensing>Spectrometers/Radiometers>Imaging Spectrometers/Radiometers>GMI, Earth Remote Sensing Instruments>Active Remote Sensing>Scatterometers>ASCAT, Earth Remote Sensing Instruments>Active Remote Sensing>Scatterometers>ASCAT";
String instrument_vocabulary "GCMD instrument keywords";
String keywords "10km - < 50km or approximately 0.09 degree - < 0.5 degree, 6-hourly, atmosphere, atmospheric, ccmp, component, components, data, derive, direction, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Atmosphere Winds > Surface Winds > Wind Direction, Earth Science > Atmospheric Winds > Surface Winds > Wind Speed, Earth Science > Oceans > Ocean Winds, eastward, eastward_wind, hour, hourly, latitude, level, longitude, meters, nobs, northward, northward_wind, number, number_of_observations, observations, ocean, oceans, rss, science, speed, statistics, surface, time, u-wind, used, uwnd, v-wind, v3.1, vector, vwnd, wind, wind_speed, winds";
String keywords_vocabulary "GCMD Science Keywords";
String license "This work is licensed under CC BY 4.0. To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/";
String long_name "RSS CCMP 6-Hourly 10 Meter Surface Winds Level 4 Version 3.1";
String naming_authority "gov.nasa";
Float64 Northernmost_Northing 89.875;
String platform "Space-based Platforms>Earth Observation Satellites>Defense Meteorological Satellite Program (DMSP)>DMSP 5D-3/F16, Space-based Platforms>Earth Observation Satellites>Defense Meteorological Satellite Program (DMSP)>DMSP 5D-3/F17, Space-based Platforms>Earth Observation Satellites>Defense Meteorological Satellite Program (DMSP)>DMSP 5D-3/F18, Space-based Platforms>Earth Observation Satellites>GCOM-W1, Space-based Platforms>Earth Observation Satellites>GPM, Space-based PlatformsEarth Observation Satellites>Meteorological Operational Satellite (METOP)>METOP-A, Space-based PlatformsEarth Observation Satellites>Meteorological Operational Satellite (METOP)>METOP-B";
String platform_vocabulary "GCMD platform keywords";
String processing_level "L4";
String product_version "3.1";
String program "NASA/Ocean Vector Winds Science Team";
String project "RSS Cross-Calibrated Multi-Platform Ocean Surface Wind Project";
String publisher_email "podaac@podaac.jpl.nasa.gov";
String publisher_institution "NASA/JPL/PO.DAAC";
String publisher_name "Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA";
String publisher_type "institution";
String publisher_url "https://podaac.jpl.nasa.gov";
String references "Mears, C.; Lee, T.; Ricciardulli, L.; Wang, X.; Wentz, F. Improving the Accuracy of the Cross-Calibrated Multi-Platform (CCMP) Ocean Vector Winds. Remote Sens. 2022, 14, 4230. https://doi.org/10.3390/rs14174230, Atlas, R., R. N. Hoffman, J. Ardizzone, S. M. Leidner, J. C. Jusem, D. K. Smith, D. Gombos, 2011: A cross-calibrated, multiplatform ocean surface wind velocity product for meteorological and oceanographic applications. Bull. Amer. Meteor. Soc., 92, 157-174. https://doi.org/10.1175/2010BAMS2946.1";
String short_name "CCMP_WINDS_10M6HR_L4_V3.1";
String source "blend of satellite and ERA-5 winds";
String sourceUrl "(local files)";
Float64 Southernmost_Northing -89.875;
String standard_name_vocabulary "CF Standard Name Table v70";
String summary "RSS VAM 6-hour analyses using ERA-5 wind reanalyses as background. Satellite winds (vector and scalar) are assimilated using a variational analysis identical to that used in CCMP V1.1. The ERA5 winds are adjusted to match winds from scatteromters before use in the analysis.";
String time_coverage_end "2024-01-31T18:00:00Z";
String time_coverage_start "1993-01-02T00:00:00Z";
String title "RSS CCMP V3.1 6-hourly surface winds (Level 4)";
Float64 Westernmost_Easting 0.125;
}
}
Data Access Protocol (DAP) and its
projection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst),
followed by [(start):stride:(stop)]
(or a shorter variation of that) for each of the variable's dimensions
(for example, [time][latitude][longitude]).
For details, see the griddap Documentation.