This dataset contains operational near-real-time Level 2 coastal ocean surface wind vector retrievals from the Advanced Scatterometer (ASCAT) on MetOp-B at 12.5 km sampling resolution (note: the effective resolution is 25 km). It is a product of the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) Ocean and Sea Ice Satellite Application Facility (OSI SAF) provided through the Royal Netherlands Meteorological Institute (KNMI). This coastal dataset differs from the standard 12.5 and 25 km datasets in that it utilizes a spatial box filter (rather than the Hamming filter) to generate a spatial average of the Sigma-0 retrievals from the Level 1B dataset; all full resolution Sigma-0 retrievals within a 15 km radius of the wind vector cell centroid are used in the averaging. Since the full resolution L1B Sigma-0 retrievals are used, all non-sea retrievals are discarded prior to the Sigma-0 averaging. Each box average Sigma-0 is then used to compute the wind vector cell using the same CMOD5.n geophysical model function as in the standard OSI SAF ASCAT wind vector datasets. With this enhanced coastal retrieval, winds can be computed as close to ~15 km from the coast, as compared to the static ~35 km land mask in the standard 12.5 km dataset. Each file is provided in netCDF version 3 format, and contains one full orbit derived from 3-minute orbit granules. Latency is approximately 2 hours from the latest measurement. The beginning of the orbit is defined by the first wind vector cell measurement within the first 3-minute orbit granule that starts north of the Equator in the ascending node. ASCAT is a C-band dual swath fan beam radar scatterometer providing two independent swaths of backscatter retrievals in sun-synchronous polar orbit aboard the MetOp-B platform. For more information on the MetOp-B mission, please visit: https://www.eumetsat.int/our-satellites/metop-series . For more timely announcements, users are encouraged to register with the KNMI scatterometer email list: scat@knmi.nl. Users are also highly advised to check the dataset user guide periodically for updates and new information on known problems and issues. All intellectual property rights of the OSI SAF products belong to EUMETSAT. The use of these products is granted to every interested user, free of charge. If you wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words "copyright (year) EUMETSAT" on each of the products used.

This dataset contains operational near-real-time Level 2 ocean surface wind vector retrievals from the Advanced Scatterometer (ASCAT) on MetOp-B at 25 km sampling resolution (note: the effective resolution is 50 km). It is a product of the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) Ocean and Sea Ice Satellite Application Facility (OSI SAF) provided through the Royal Netherlands Meteorological Institute (KNMI). The wind vector retrievals are currently processed using the CMOD.n geophysical model function using a Hamming filter to spatially average the Sigma-0 data in the ASCAT L1B data. Each file is provided in netCDF version 3 format, and contains one full orbit derived from 3-minute orbit granules. Latency is approximately 2 hours from the latest measurement. The beginning of the orbit is defined by the first wind vector cell measurement within the first 3-minute orbit granule that starts north of the Equator in the ascending node. ASCAT is a C-band dual swath fan beam radar scatterometer providing two independent swaths of backscatter retrievals in sun-synchronous polar orbit aboard the MetOp-B platform. For more information on the MetOp-B mission, please visit: https://www.eumetsat.int/our-satellites/metop-series . For more timely announcements, users are encouraged to register with the KNMI scatterometer email list: scat@knmi.nl. Users are also highly advised to check the dataset user guide periodically for updates and new information on known problems and issues. All intellectual property rights of the OSI SAF products belong to EUMETSAT. The use of these products is granted to every interested user, free of charge. If you wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words "copyright (year) EUMETSAT" on each of the products used.

This dataset contains ocean surface wind vectors (equivalent neutral and true 10m) and wind stress vectors derived from satellite-based scatterometer observations (the MetOp-B ASCAT scatterometer), representing the first science quality release of these data (post-provisional after v1.0) funded under the MEaAUREs program. This product from MetOp-B ASCAT has been intercalibrated with similar scatterometer measurements from instruments on the MetOp-A, ScatSat-1, and QuikScat satellites (all of which can be found on the MEaSUREs OSVW Project Page), and if used together create an unbroken record of winds from 1999 to 2022. The wind vector and stress retrievals are provided on a non-uniform grid within the swath (Level 2 (L2) products) at 12.5 km pixel resolution. Each L2 file corresponds to a specific orbital revolution number, which begins at the southernmost point of the ascending orbit. The thumbnail shows data for two orbits - using all orbits for a single day will provide global coverage.The dataset represents the first science quality release funded under the MEaSUREs (Making Earth System Data Records for Use in Research Environments) program. Version 1.1 provides a set of updates and improvements from version 1.0, including: 1) increased data coverage, 2) improved quality control, and 3) new global metadata attributes featuring revolution number, equator crossing longitude, and equator crossing time (UTC). The primary purpose of this release is for science evaluation by the NASA International Ocean Vector Winds Science Team (IOVWST).

The ASCAT Wind Product contains stress equivalent 10m winds (speed and direction) over the global oceans. The winds are obtained through the processing of reprocessed scatterometer backscatter data originating from the ASCAT instrument on EUMETSAT's Metop satellite.

NOAA CoastWatch distributes near real time wind data originating with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. Wind velocity is processed to wind divergence by NOAA CoastWatch. (This is an 8 day composite.)

Equivalent neutral 10m winds over the global oceans, with specific sampling to provide as many observations as possible near the coasts.

Data are available from the Data Store from collection EO:EUM:DAT:METOP:OSI-104.

This product can be downloaded as numerical data in EUMETView, where it is provided through a Web Feature Service (WFS).

The Advanced Scatterometer (ASCAT) real aperture radar is a C-band dual swath fan beam radar scatterometer onboard the European MetOp satellite series. This instrument uses radar to measure backscatter for determining wind speed/direction over the surface of the ocean and to detect sea ice. The ASCAT Level-1b product consists of geo-located radar backscatter values from six ASCAT beams at 25 km and 50 km resolution. These data are used by NOAA’s National Environmental Satellite, Data, and Information Service (NESDIS) to produce NOAA Unique Level-2 surface wind products. This Level-1b product is produced by the European Organization for Meteorological Satellites (EUMETSAT) and distributed by NOAA's Comprehensive Large Array-Data Stewardship System (CLASS) in the EPS Native Format. Note: this is the original operational version of the ASCAT L1b product. A reprocessed version of this product may be available through EUMETSAT.

The ASCAT Wind Product contains measurements of the wind direction and wind speed above the sea surface. The measurements are obtained through the processing of scatterometer data originating from the ASCAT instrument on EUMETSAT's Metop-C satellite, as described in the ASCAT Wind Product User Manual (https://scatterometer.knmi.nl/publications/pdf/ASCAT_Product_Manual.pdf). The sampling distance is 25 km. Note: All intellectual property rights of the OSI SAF products belong to EUMETSAT. The use of these products is granted to every interested user, free of charge. If you wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words "copyright (year) EUMETSAT" on each of the products used. Note: This KDP dataset only has data starting from 2023-06-18. The full dataset (starting from 2019-10-22) is available (as NetCDF4) here: https://podaac.jpl.nasa.gov/dataset/ASCATC-L2-25km

This dataset contains model output interpolated in space and time to observations from the MetOp-B ASCAT (ASCAT-B) instrument (a satellite-based scatterometer), representing the first science quality release of these data (post-provisional after v1.0) funded under the MEaAUREs program. These auxiliary fields are included to complement those scatterometer observations, specifically for the ASCATB_ESDR_L2_WIND_STRESS_V1.1 dataset. Model variables include: i) ocean surface wind fields from ERA-5 short-term forecast (removed from the analyses times to reduce impacts from assimilated scatterometer retrievals at the beginning of the forecast); ii) estimations of precipitation from the GPM IMERG product; iii) estimation of the surface currents from the GlobCurrent project. The fields are provided on a non-uniform grid within the sampled locations of the ASCAT-B Level 2 product, and at a nominal 12.5 km pixel resolution. Each file corresponds to a specific orbital revolution number, which begins at the southernmost point of the ascending orbit. The thumbnail shows data for two orbits - using all orbits for a single day will provide global coverage.The dataset represents the first science quality release of this product with funding from the MEaSUREs (Making Earth System Data Records for Use in Research Environments) program. Version 1.1 provides a set of updates and improvements from version 1.0, including: 1) cleaned up ancillary data points in between the left/right swaths for improved collocation with available satellite data, 2) improved variable metadata, 3) removed the GlobCurrent stokes drift variables, and 4) provided data source metadata including DOIs for the ERA-5, IMERGE, and GlobCurrent data sources. The primary purpose of this Version 1.1 release is for science evaluation by the NASA International Ocean Vector Winds Science Team (IOVWST).

This ASCAT Multi-parameter product contains surface wind vectors over ocean and soil moisture index over land. Additionally, the backscatter values involved in the retrieval of the geophysical parameters above are also included, as well as several quality flags to facilitate the use of the data. For NWP users this product is provided in BUFR format. The netCDF version of this product contains Winds ONLY. For users interested in either ASCAT backscatter, wind or soil moisture index data in other formats, please refer to the relevant product entries available for the specific parameters. Finally, note that although the OSI SAF is identified as the originating centre for this product, it is not responsible for the processing of soil moisture index values, which is currently carried out at EUMETSAT.

These data are only available in the Data Centre as of 28/02/2011. Archived NRT data before that date can be requested from the OSI SAF helpdesk. Even more important: for Metop-A it is recommended that the reprocessed ASCAT winds data records (10.15770/EUM_SAF_OSI_0006) are used instead of this archived NRT product for the period before 1 April 2014.

Metop-A data are available in the Data Centre up to 15/11/2021.

This dataset contains the curl and divergence of ocean surface equivalent neutral wind and wind stress, derived from satellite-based scatterometer observations (the MetOp-B ASCAT scatterometer), representing the first science quality release of these data (post-provisional after v1.0) funded under the MEaSUREs program. This product from MetOp-B ASCAT has been intercalibrated with similar scatterometer measurements from instruments on the MetOp-A, ScatSat-1, and QuikScat satellites, all of which can be found on the MEaSUREs OSVW Project Page. These Level 2 data are provided on a non-uniform grid within the satellite swath at ~12.5 km pixel resolution. Each L2 file corresponds to a specific orbital revolution number, which begins at the southernmost point of the ascending orbit - the thumbnail preview shows data for all orbits over a day (typically 14 orbits). Estimates for the curls and divergences are computed over several spatial domains with varying radii from the point of interest, and included as separate variables.The dataset represents the first science quality release funded under the MEaSUREs (Making Earth System Data Records for Use in Research Environments) program. The primary purpose of this release is for science evaluation by the NASA International Ocean Vector Winds Science Team (IOVWST). This V1.0 of the data was derived from V1.1 of the L2 wind and stress product.

NOAA CoastWatch distributes science quality wind stress data in zonal, meridional, modulus, and wind stress curl sets. This data begins with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. NOAA CoastWatch processes wind velocity to wind stress and wind stress curl. (This is a 3 day composite.)

The ASCAT Ice Classification system takes Enhanced Resolution (4.5 km x 4.5 km) ASCAT Normalized Radar Cross Section (NRCS) and in a two-step process creates an Ice Classification mask with 3 classes (seasonal, perennial, mixed). Primary Input data Enhanced Resolution (4.5 km x 4.5 km) ASCAT Normalized Radar Cross Section (NRCS) created by the Scatterometer Image Reconstruction (SIR) algorithm. Developed by David Long at BYU. National Ice Center's 4 km Interactive Snow and Ice Mask (IMS). cdm_data_type=Grid Conventions=CF-1.6, COARDS, ACDD-1.3 crs_wkt=PROJCS["unnamed", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]], AUTHORITY["EPSG","6326"]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433], AUTHORITY["EPSG","4326"]], PROJECTION["Polar_Stereographic"], PARAMETER["latitude_of_origin",60], PARAMETER["central_meridian",-45], PARAMETER["scale_factor",1], PARAMETER["false_easting",0], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]]] cw_projection=Polar Stereographic cw_satellite=Metop-B cw_sensor=ASCAT defaultGraphQuery=IceClass%5B(last)%5D%5B(0.0)%5D%5B(3272748.09217783):(-3272748.0921771)%5D%5B(-3272748.09217783):(3272748.0921771)%5D%26.draw=surface%26.vars=cols%7Crows%7CIceClass%26.colorBar=iceclass%7CD%7C%7C1%7C6%7C5%26.bgColor=0xffccccff geospatial_bounds=POLYGON((-180.000000 47.538530, 135.000000 59.302944, 90.000000 47.538530, 45.000000 59.302944, 0.000000 47.538530, -45.000000 59.302944, -90.000000 47.538530, -135.000000 59.302944, -180.000000 47.538530)) geospatial_vertical_max=0.0 geospatial_vertical_min=0.0 geospatial_vertical_positive=up geospatial_vertical_units=m grid_mapping_false_easting=0.0 grid_mapping_false_northing=0.0 grid_mapping_inverse_flattening=298.257223563 grid_mapping_latitude_of_projection_origin=90.0 grid_mapping_name=polar_stereographic grid_mapping_semi_major_axis=6378137.0 grid_mapping_standard_parallel=60.0 grid_mapping_straight_vertical_longitude_from_pole=-45.0 history=Metop-B_ASCAT_IceClass infoUrl=https://coastwatch.noaa.gov/ institution=USDOC/NOAA/NESDIS PolarWatch instrument=ASCAT keywords_vocabulary=NASA Global Change Master Directory (GCMD) Science Keywords OBSERVED_PROPERTY=IceClass platform=METOP-B proj4text=+proj=stere +lat_0=90 +lat_ts=60 +lon_0=-45 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs source=METOP-B_ASCAT_IceClass sourceUrl=(local files) standard_name_vocabulary=CF Standard Name Table v79 testOutOfDate=now-4days time_coverage_end=2025-08-31T12:00:00Z time_coverage_start=2020-01-01T12:00:00Z

NOAA CoastWatch distributes near real time divergence and modulus wind data originating with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. Wind velocity is processed to wind divergence by NOAA CoastWatch. (This is a 14 day composite.)

NOAA CoastWatch distributes science quality Ekman current (in zonal, meridional, and modulus sets) and Ekman upwelling data. This data begins with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. NOAA CoastWatch processes wind velocity to wind stress and wind stress curl, and finally to Ekman current and Ekman upwelling. (This is a 14 day composite.)

The ASCAT Wind Product contains measurements of the wind direction and wind speed at 10 m above the sea surface. The measurements are obtained through the processing of scatterometer data originating from the ASCAT instrument on EUMETSAT's Metop satellite, as described in the ASCAT Wind Product User Manual. Note that up until 2011-02-28, a wind-only version of this product in BUFR and netCDF formats was available via EUMETCast and the EUMETSAT Data Centre. From that date on, the wind values can be found in BUFR and netCDF formats in the ASCAT multi-parameter products (collection reference: EO:EUM:DAT:METOP:OAS012 and EO:EUM:DAT:METOP:OAS025). It is recommended that the reprocessed ASCAT winds data records (EO:EUM:DAT:METOP:OSI-150-B, EO:EUM:DAT:METOP:OSI-150-A) are used instead of this archived NRT product.

The Advanced Scatterometer (ASCAT) real aperture radar is a C-band dual swath fan beam radar scatterometer onboard the European METOP satellite series. The instrument uses radar to measure backscatter to determine wind speed and direction over the surface of the ocean. ASCAT Level-2 Ultra High Resolution (UHR) storm wind retrieval measurements are generated by NOAA with ASCAT L1B data from the European Organization for Meteorological Satellites (EUMETSAT). UHR storm wind retrievals are created using the standard KNMI wind retrieval algorithm which is applied at each pixel to estimate the wind speed and direction. The UHR winds are noisier than conventional 25 km winds, but have higher spatial resolution, estimated at 10 km. The data are produced by the NOAA Environmental Satellite, Data, and Information Service (NESDIS) and are distributed by the Comprehensive Large Array-Data Stewardship System (CLASS) in the netCDF-4 file format with attributes included.

NOAA CoastWatch distributes near real time wind data originating with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. Wind velocity is processed to wind divergence by NOAA CoastWatch. (This is a 1 day composite.)NOAA CoastWatch distributes near real time wind data originating with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. Wind velocity is processed to wind divergence by NOAA CoastWatch. (This is a 1 day composite.)NOAA CoastWatch distributes near real time wind data originating with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. Wind velocity is processed to wind divergence by NOAA CoastWatch. (This is a 1 day composite.)NOAA CoastWatch distributes near real time wind data originating with wind velocity measurements from the ASCAT instrument onboard EUMETSAT's Metop-B satellite. ASCAT is a microwave scatterometer designed to measure surface winds over the global ocean. Wind velocity is processed to wind divergence by NOAA CoastWatch. (This is a 1 day composite.)

The Metop ASCAT surface soil moisture product is based on a semi-empirical change detection method developed by TU Wien. The mulit-angle backscatter observation from Metop ASCAT are used to derive relative surface soil moisture information expressed in degree of saturation (0 - 100%). The product contains processing, correction and confidence flags to indicate the quaility of the product. The following changes have been introduced w.r.t. H25 Metop ASCAT SSM CDR2014: (1) Add Metop-B Level 1b input data, (2) Inter-beam calibration using stable backscatter targets, (3) New method to estimate slope and curvature parameters, (4) Derivation of new empirical model parameters. Data from Metop-A (2007-01-01 - 2015-12-31) & Metop-B (2013-01-01 - 2015-12-31).

Abstract: The soil moisture time series data of the EUMETSAT H-SAF product H115 and its extension H116 based on MetOp-A and -B ASCAT data, processing version v5, are converted into geographic maps (cartesian grid) of daily running 5-day average/composite soil moisture (SM) distribution separately for ascending and descending overpasses. Two different 5-day SM distributions are given: one is based solely on nominally computed SM, the other one includes also those SM values which were negative (down to -25%, correction flag = 1) or positive (up to 125%, correction flag = 2) but set to 0% and 100%, respectively. All data are interpolated into a cartesian grid of x- and y-dimensions of original grid. For more information see the respective global attribute in the netCDF file. TableOfContents: soil moisture; soil moisture noise; soil moisture extended; soil moisture extended noise; soil moisture status flag; number of overpasses per grid cell; historic probability of snow cover; historic probability of frozen land; inundation and wetland fraction; topographic complexity; soil porosity LDAS; soil porosity HWSD Technical Info: dimensons: 3207 columns x 1599 rows x unlimited; temporalExtent_startDate: 2007-01-01; temporalExtent_endDate: 2020-12-31; temporalResolution: daily; spatialResolution: 0.1125; spatialResolutionUnit: degrees; horizontalResolutionXdirection: 0.1125; horizontalResolutionXdirectionUnit: degrees; horizontalResolutionYdirection: 0.1125; horizontalResolutionYdirectionUnit: degrees; verticalResolution: none; verticalResolutionUnit: none; verticalStart: none; verticalEnd: none; instrumentName: Advanced SCATterometer (ASCAT); instrumentType: C-band microwave_scatterometer; instrumentLocation: Meteorological Operational Satellite (MetOp-A, MetOp-B); instrumentProvider: EUMETSAT, ESA; License: The following applies to the original product: All intellectual property rights of the HSAF products belong to EUMETSAT. The use of these products is granted to every user, free of charge. If users wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words "Copyright EUMETSAT" under each of the products shown. EUMETSAT offers no warranty and accepts no liability in respect of the HSAF products. EUMETSAT neither commits to nor guarantees the continuity, availability, or quality or suitability for any purpose of, the HSAF products. Methods: For a description of the methods used to obtain the 5-day average / composite data we refer to the global attributes of the netCDF files. For the methods used for the native soil moisture time series please see: [1] Wagner, W., et al.: A method for estimating soil moisture from ERS scatterometer and soil data, Rem. Sens. Environ., 70(2), 191-207, 1999. doi: 10.1016/S0034-4257(99)00036-X; [2] Naeimi, V., et al.: An Improved Soil Moisture Retrieval Algorithm for ERS and METOP Scatterometer Observations, IEEE Trans. Geosci. Rem. Sens., 47(7), 1999-2013, 2009. doi:10.1109/TGRS.2008.2011617; [3] Naeimi, V., et al.: ASCAT Surface State Flag (SSF): Extracting Information on Surface Freeze/Thaw Conditions From Backscatter Data Using an Empirical Threshold-Analysis Algorithm, IEEE Trans. Geosci. Rem. Sens., 50(7), 2566-2582, 2012. doi: 10.1109/TGRS.2011.2177667; [4] Product User Manual: H SAF, Product User Manual (PUM) Metop ASCAT Surface Soil Moisture Climate Data Record v5 12.5 km sampling (H115) and Extension (H116), v0.1, 2019; [5] Algorithm Theoretical Basis Document: H SAF, Algorithm Theoretical Baseline Document (ATBD) Metop ASCAT Surface Soil Moisture Climate Data Record v5 12.5 km sampling ( H115) and Extension (H116), v0.1, 2019; [6] Product Validation Report: H SAF, Product Validation Report (PVR) Metop ASCAT Surface Soil Moisture Climate Data Record v5 12.5 km sampling (H115) and Extension (H116), v0.3, 2019. Units: units for all variables (see TableOfContents): percent, percent, percent, percent, 1, 1, percent, percent, percent, percent, m3/m3, m3/m3