NOAA NCEI Experimental Blended Seawinds (NBS v2)

Please note these are peer-reviewed scientific research products, and user feedback is welcome (email  ncei.satellite.ocean.internal@noaa.gov for product improvements) .

The NOAA NCEI Blended Seawinds (NBS) version 2.0 dataset synthesizes observations from multiple satellites (up to seven satellites since June 2002) to create gridded wind speeds (10m, neutral). This is an updated version of the existing NOAA NBS v1.0, which is a global gridded 0.25° and 6-hourly sea surface winds product that has wide applications in marine transportation, marine ecosystem and fisheries, offshore winds, weather and ocean forecasts, and other areas. 

    Data Access
    HTTPS
    THREDDS
    ERDDAP
    Sample Filenames

    Retrospective:

    NBSv02_wind_6hourly_YYYYMMDD.nc

    NBSv02_wind_stress_6hourly_YYYYMMDD.nc, 

    NBSv02_wind_daily_YYYYMMDD.nc,

    NBSv02_wind_stress_daily_YYYYMMDD.nc,

    NBSv02_wind_monthly_YYYYMM.nc,

    NBSv02_wind_stress_monthly_YYYYMM.nc

    NRT:

    NBSv02_wind_6hourly_YYYYMMDD_nrt.nc

    NBSv02_wind_stress_6hourly_YYYYMMDD_nrt.nc

    NBSv02_wind_daily_YYYYMMDD_nrt.nc

    NBSv02_wind_stress_daily_YYYYMMDD_nrt.nc

     

    Global map projection of sea surface wind speeds

    The NOAA NCEI Blended Seawinds (NBS) version 2.0 dataset synthesizes observations from multiple satellites (up to seven satellites since June 2002) to create gridded wind speeds . This is an updated version of the existing NOAA NBS v1.0, which is a global gridded 0.25° and 6-hourly sea surface winds product that has wide applications in marine transportation, marine ecosystem and fisheries, offshore winds, weather and ocean forecasts, and other areas. Blending the data from multiple satellites fills in the temporal and spatial data gaps present in each source dataset, and reduces subsampling aliases and random errors. These satellites include scatterometers and microwave radiometers/imagers, which do not provide accurate observations of intensive high-speed hurricane winds because their signals saturate in very high winds or degrade in the presence of rain. 
    Recent advancements in satellite wind retrievals revealed that the L-band (1.42 GHz) instrument on the Soil Moisture Active Passive (SMAP) satellite and the AMSR2 All-Weather channel (~6.9 GHz) can provide accurate hurricane winds of up to 65 m/s (145 MPH) without being affected by rain; these data are incorporated in a new version of the Blended Sea Winds, NBS v2.0, using a multi-sensor data fusion technique based on random errors, enabling it to resolve very high winds, especially along the eyewalls of tropical cyclones and hurricanes. NBS v2.0 provides both a long-term record of >30 years retrospectively since July 1987 and a near-real-time (NRT) mode with 1-day latency. With the present seven satellites, there are very few data gaps over the global ocean in the 6-hourly interpolated fields, and those gaps are mostly in the higher latitudes (beyond 40°N or S). To produce a version of “gap-free” Level 4 wind data, the few remaining gaps are filled with the ERA-5 reanalysis winds in the delayed mode NBS (latency and cycle of a month) and with NOAA/NCEP/GFS forecast winds in the NRT version. The reanalysis or forecast data are also used to calculate the wind directions, which is essential to retrieve wind and wind stress components.

    These products were developed in response to the increasing demand for higher resolution global datasets, and can be used to improve the accuracy of ocean and weather conditions forecasts. Please note these are research products, and thus, are experimental in nature. 

    Temporal Start Date
    September 7, 1987
    Temporal Coverage

    Temporal: 6h, 1D, 1M

    Product Families
    Sea Surface Winds
    Measurements
    Sea Surface Vector Winds
    Processing Levels
    Level 4
    Latency Groups
    0 Hours <= 24 Hours (NRT)
    24+ hours (Delayed)
    Latency Details

    24 hrs (for NRT)

    Spatial Resolution Groups
    2km+
    Spatial Resolution Details

    0.25°

    Data Providers
    NOAA
    NESDIS
    NCEI
    STAR
    Spatial Coverage

    Global

    Description

    180W - 180E
    90N - 90S

    Aqua

    Description

    Earth Observation System - Aqua

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    NASA
    Orbital Altitude
    705 km
    Equatorial Crossing Times
    13:30 asc

    Coriolis

    Description

    Coriolis

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    DoD
    NASA
    Orbital Altitude
    838 km
    Equatorial Crossing Times
    06:10 desc

    DMSP

    Description

    Defense Meteorological Satellite Program
     

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    DoD
    NOAA
    Orbital Altitude
    850 km
    Orbital Period
    101.8 min
    Orbital Inclination
    98.9°
    Equatorial Crossing Times
    06:36 desc

    GCOM-W

    Description

    Global Change Observation Mission for Water

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    JAXA
    Orbital Altitude
    700 km
    Equatorial Crossing Times
    13:30 asc

    GPM

    Description

    Global Precipitation Measurement

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    JAXA
    NASA
    Orbital Altitude
    407 km
    Orbital Inclination
    65°
    Equatorial Crossing Times
    Variable

    MetOp

    Description

    Meteorological Operational satellite - A / B / C

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    ESA
    EUMETSAT
    Orbital Altitude
    827 km
    Equatorial Crossing Times
    07:50 desc

    QuikSCAT

    Description

    Quick Scatterometer Mission

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    NASA
    Orbital Altitude
    803 km
    Equatorial Crossing Times
    06:00 asc

    SMAP

    Description

    The Soil Moisture Active Passive

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    NASA
    JPL
    Orbital Altitude
    685 km
    Orbital Period
    98.5 Minutes
    Equatorial Crossing Times
    06:00 desc

    TRMM

    Description

    Tropical Rainfall Measuring Mission

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    JAXA
    NASA
    Orbital Altitude
    402 km
    Orbital Inclination
    35°
    Equatorial Crossing Times
    Variable

    AMSR-E

    Description

    Advanced Microwave Scanning Radiometer for EOS

    Platforms
    Instrument Types
    Imager
    Organizations
    JAXA

    AMSR2

    Description

    Advanced Microwave Scanning Radiometer - 2

    Platforms
    Instrument Types
    Imager
    Organizations
    JAXA

    ASCAT

    Description

    Advanced Scatterometer
     

    Platforms
    Instrument Types
    Scatterometer
    Organizations
    ESA

    GMI

    Description

    GPM Microwave Imager

    Platforms
    Instrument Types
    Imager
    Organizations
    NASA

    SeaWinds

    Description

    SeaWinds

    Platforms
    Instrument Types
    Scatterometer
    Organizations
    NASA

    SMAP

    Description

    Soil Moisture Active Passive

    Platforms
    Instrument Types
    Imager
    Organizations
    NASA

    SSMIS

    Description

    Special Sensor Microwave - Imager/Sounder

    Platforms
    Instrument Types
    Imager
    Sounder
    Organizations
    DoD

    TMI

    Description

    TRMM Microwave Imager

    Platforms
    Instrument Types
    Imager
    Organizations
    NASA

    WindSat

    Description

    WindSat

    Platforms
    Instrument Types
    Imager
    Organizations
    DoD
    • Saha, K.; Huai-Min, Z. Hurricane and Typhoon Storm Wind Resolving NOAA NCEI Blended Sea Surface Wind (NBS) Product. Frontiers in Marine Sciences – Ocean Observation 2022, 9, 1–12. https://doi.org/10.3389/fmars.2022.935549.
    • Peng, G., H.-M. Zhang, H.P. Frank, J.-R. Bidlot, M. Higaki, S. Stevens, and W.R. Hankins, 2013: Evaluation of various surface wind products with OceanSITES buoy measurements. Weather and Forecasting, 28, 1281–1303, https://doi.org/10.1175/WAF-D-12-00086.1.
    • Zhang, H.-M., J. J. Bates, and R. W. Reynolds, 2006: Assessment of composite global sampling: Sea surface wind speed, Geophysical Research Letters, 33, L17714, https://doi.org/10.1029/2006GL027086.
    • Zhang, H.-M., R.W. Reynolds, and J.G. Bates, 2006: Blended and gridded high resolution global sea surface wind speed and climatology from multiple satellites: 1987–present. 14th Conference on Satellite Meteorology and Oceanography, Atlanta, GA, American Meteorological Society, Paper 100004. [https://ams.confex.com/ams/Annual2006/webprogram/Paper100004.html].

    Saha, K.; Huai-Min, Z. Hurricane and Typhoon Storm Wind Resolving NOAA NCEI Blended Sea Surface Wind (NBS) Product. Frontiers in Marine Sciences – Ocean Observation 2022, 9, 1–12. https://doi.org/10.3389/fmars.2022.935549.

    ** When you use our data, please reference the product citation (if available) and acknowledge "NOAA CoastWatch" **