AMSR at NSIDC

PoDAG XV Briefing

NSIDC28 September 1999

AMSR Overview

ADVANCED MICROWAVE SCANNING RADIOMETER (AMSR)

ADEOS-II Mission (AMSR)

• Japanese (NASDA) to launch November 2000• 14-channel, 8- frequency passive microwave radiometer • Frequencies of the AMSR are 6.925, 10.65, 18.7, 23.8, 36.5, and 89.0 (horizontal and vertical polarization) and 50.3 and 52.8 GHz (vertical polarization only).

EOS PM-1 Mission (AMSR-E)

• United States (NASA) to launch December 2000•12-channel, 6 frequency passive microwave radiometer• Frequencies of the AMSR-E are 6.925, 10.65, 18.7, 23.8, 36.5, and 89.0 (horizontal and vertical polarization)

Performance Characteristics

Center Frequencies (GHz) 6.925 10.65 18.7 23.8 36.5 89 *50.3 *52.8Bandwidth (MHz) 350 100 200 400 1000 3000 200 400Polarization V/H V/H V/H V/H V/H V/H V VIFOV (kmxkm) * 71x41 46x26 25x15 23x14 14x8 6x4 12x6 12x6IFOV (kmxkm) 75x43 48x27 27x16 31x18 14x8 6x4Sampling Rate (kmxkm) 10x10 10x10 10x10 10x10 10x10 5x5 10x10 10x10Integration Time (msec) 2.6 2.6 2.6 2.6 2.6 1.8 2.6 2.6Sensitivity (K) 0.3 0.6 0.6 0.6 0.6 1.1 1.8 1.3

*50.3 and 52.8 frequencies available on ADEOS-II AMSR only

AMSR-E ESDTs

ECS Short Name

Level ECS Long Name Collection Description Data Volume

AE_L0 0 PM-1 AMSR-E Level 0 Production Data Set The PM-1 AMSR-E Level 0 Production Data Set generated by EDOS .8 GB/day

AE_L1B L1B PM-1 AMSR-E Level 1B Brightness Temperatures

The PM-1 AMSR-E global swath Brightness Temperatures generated by NASDA EOC

.8 GB/day

AE_L2A 2A PM-1 AMSR-E Level 2A Spatially Resampled Brightness Temperatures

The PM-1 AMSR-E global swath Brightness Temperatures are resampled at resolutions of 57 km, 36 km, 21 km, 11 km, and 5.5 km.

1.7 GB/day (provided by RSS)

AE_Ocean 2B PM-1 AMSR-E Level 2B Swath Ocean Products: 2 w inds, 2 SSTs, vapor, cloud water

The PM-1 AMSR-E global swath ocean w ind speed at 36 and 21 km res., water vapor over ocean at 21 km res., cloud liquid water at 11 km res., and sea surface temperature at 57 and 36 km res. generated using the Wentz Algorithm and Level2A product.

279.5 MB/day

AE_Land 2B PM-1 AMSR-E swath Surface Soil Moisture w ith veg, temp, sfc type, and QC parms

The PM-1 AMSR-E swath surface soil moisture and iterpretive parameters including surface type, vegetation water content, surface temperature, and QC parms are generated from Level 2A AMSR-E TBs spatially resampled to a nominal 25-km equal area earth grid

11.9 MB/day

AE_Rain 2B PM-1 AMSR-E level 2B global rain rate and rain type

The PM-1 AMSR-E global swath rain rate and rain type products are generated using the Level 2A spatially resampled TBs as input. Over ocean the Goddard Profiling Algorithm produces rain rates and types; over land the Ferraro Algorithm is used.

68.5 MB/day

AE_RainGd 3 PM-1 AMSR-E Level 3 Monthly Global Rainfall Accumulations

The PM-1 AMSR-E global monthly global rainfall accumulations are 5 x 5 degree grids generated using the Wilheit Algorithm and level 2 rain products as input.

.005 MB/month

AE_DyOcn 3 PM-1 AMSR-E Level 3 Daily Ocean Products: 2 w inds, 2 SSTs, vapor, cloud water

The PM-1 AMSR-E global ocean level 3 daily products are .25 x .25 degree ascending and descending grids generated using the six Level 2B ocean products as input.

14.5 MB/day

AMSR-E ESDTs

ECS Short Name

Level ECS Long Name Collection Description Data Volume

AE_MoOcn 3 PM-1 AMSR-E Level 3 Monthly Ocean Products: 2 w inds, 2 SSTs, vapor, cloud water

The PM-1 AMSR-E global ocean level 3 monthly products are .25 x .25 degree grids generated using the six level 2B ocean products as input.

12.4 MB/month

AE_DySno 3 PM-1 AMSR-E Level 3 daily snow water equivalent w ith snow depth EASE grids

The PM-1 AMSR-E level 3 daily product contains global snow water equivalent EASE grids. Snow depth EASE grids are included as research products.

AE_5DSno 3 PM-1 AMSR-E Level 3 5-day snow water equivalent w ith snow depth EASE grids

The PM-1 AMSR-E level 3 product contains 5-day global snow water equivalent EASE grids. Snow depth EASE grids are included as research products

2.08 MB/5-day

AE_MoSno 3 PM-1 AMSR-E Level 3 monthly snow water equivalent

The PM-1 AMSR-E level 3 product contains monthly global snow water equivalent EASE grids. Snow depth EASE girds are included as research products

2.08 MB/month

AE_SI6 3 PM-1 AMSR-E Level 3 6.25 km polar stereographic grids for 89.0 GHz TBs

The PM-1 AMSR-E level 3 products at 6.25 km contain polar stereographic grids of 89.0 GHz brightness temperatures . Grids are daily averages, daily ascending averages, and daily descending averages.

46.3 MB/day

AE_SI12 3 PM-1 AMSR-E Level 3 12.5 km polar stereographic grids for sea ice concentration, snow depth over ice, 18.7, 23.8, 36.5, and 89.0 GHz TBs.

The PM-1 AMSR-E level 3 products at 12.5 km are polar stereographic grids of sea ice concentration, snow depth over ice, 18 - 89.0 GHz TBs. The sea ice concentration and TBs are daily, daily asc, and daily desc grids. The snow depth is a 5-day grid.

64.6 MB/day

AE_SI25 3 PM-1 AMSR-E Level 3 25 km polar stereographic grids for sea ice concentration, sea ice temperature, 6.925, 10.65, 18.7, 23.8, 36.5, and 89.0 GHz TBs.

The PM-1 AMSR-E level 3 products at 25 km contain polar stereographic grids of sea ice concentration, sea ice temperature, 6.925, 10.65, 18.7, 23.8, 36.5, and 89.0 GHz TBs. Grids are daily averages, daily ascending averages, and daily descending averages.

22.4 MB/day

AE_Land3 3 PM-1 AMSR-E global daily surface soil moisture w ith veg, temp, and TB parms

Global surface soil moisture w ith vegetation water content, surface temperature, and TB parameters are generated on a nominal 25-km equal area earth grid by time-compositing the Level 2B parameters, seperately for ascending and descending passes.

48.6 MB/day

AMSR Interfaces

• AMSR-E ingest, archive Orbital parameters

Rate-buffered AMSR-E & GBAD

& distribution

AMSR-E L1B

AMSR-E L1B

AMSR-E L1B

AMSR-E L2A

IST I/F

NASA FDS NASA

EOC

NASDA JAPAN

L1A, L1B (archive L1)

PO DAAC (JPL)

RSS

(Wentz/Santa Rosa)

EDOS

NOAA server

ECS @

NSIDC DAAC

AMSR-E SIPS

(GHRC/MSFC)

EDG (Client)

AMSR-E Level 2&3

Alaska Svalbard

Rate-buffered data & GBAD

(all PM-1 instruments)

AMSR-E PDS, GBAD PDS (APID’s 957,959)

QA updates

USER

Interoperability

Search/Order

AMSR-E PDS & GBAD

(Back-up only /request via EDG)

AMSR Interfaces at NSIDC

• AMSR-E ingest, archive & distribution

AMSR-E L1B

NASDA

JAPAN

PO DAAC (JPL)

EDOS GSFC

ECS @

NSIDC DAAC

AMSR-E SIPS

(GHRC/MSFC)

EDG (Client)

AMSR-E Level 2&3

AMSR-E PDS, GBAD PDS (APID’s 957,959)

QA updates

USER

Search/Order

AMSR-E PDS & GBAD

(Back-up only /request via EDG)

NSIDC DAACPDR Server &Metadata generator

AMSR-E L1BAMSR-E L1B