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AMSR_ice.png

NOAA CoastWatch/OceanWatch/PolarWatch Sea Ice Concentration, Level 3, daily, polar stereographic mapped composites -  AMSR-2

  • The second Advanced Microwave Scanning Radiometer 2 (AMSR-2) on JAXA's Global Climate Observation Mission - Water 1 (GCOM-W1)
  • Daily composites
  • 10 km spatial resolution
  • Polar Stereographic projections for North Pole and South Pole 
  • Microwave not impacted by clouds
  • Source data from NOAA OSPO; NOGAPS algortihm developed by NOAA STAR (Paul Chang, Lead)

 

 

KeyDescription
Platform/Sensor

Global Change Obervation Mission - Water (GCOM-W1)

The second Advance Microwave Scanning Radiometer (AMSR-2)

Japan Aerospace Exploration Agency (JAXA)

Measurement/Products

Sea Ice Concentration (% of Sea Ice per pixel)

Sample Filename

GWXCW_W2019203_C15_002140_020039_033940_051540_065439_083040_100940_114840_132440_150341_164242_182143_200342_214543_224240_NP06_IceConc.nc

Where:

  • GWXCW is
  • W2019203 is W year and day of year:  WYYYYdoy
  • C15 indicates number of granules in composite (generally 14 or 15)
  • Series of 6 digit numbers are start times each granule included in the composite
  • NP06 (or SP06) indicates mapped to Polar Stereographic Projection for North Pole (NP06) or South Pole (SP06) 
  • Ice Conc is product name = Ice Concentration
  • .nc is NetCDF format (CF compliant)
Processing Level

Level 3

Spatial Coverage

Polar Stereographic projection, origin at 90 degrees to 60 degree parallel (North or South)

Temporal Coverage

Daily

Latency

Approximately 12 to 24 hours

Resolution

10 km

Projection

Polar Stereographic

Orbit

Polar-orbiting

Data Provider

NOAA Office of Satellite and Product Operations (OSPO) uses the GCOM-W1 AMSR-2 Algorithm Software Processor (GAASP) which takes the full orbital JAXA L1B data via NASA, applies brightness temperature bias corrections, assigns an RFI flag, performs internal reformatting, and then generates L2 products from the NOAA Operational GCOM-W1 AMSR-2 Products System Algorithm (NOGAPS).  NOAA CoastWatch obtains L2 from OSPO and generates L3 daily merged (composite) and maps to polar stereographic projection for routine distribution.

Formats

NetCDF (Climate and Forecast Convention Compliant; CF 1.4)

Keywords

polar stereographic, GCOM-W1, AMSR-2, Sea Ice Concentration, JAXA

Keywords (Beta)
Documentation: 

STAR Development (Paul Chang, Lead)

https://manati.star.nesdis.noaa.gov/gcom

OSPO Monitoring and Documentation

https://www.ospo.noaa.gov/Products/atmosphere/gpds/algo.html