AMSR Data Catalog #8211; AMSR web at JAXA Earth Observation Research Center (EORC)

Data Catalog
Mission Requirement
AMSR2
Standard Product

AMSR2 Mission Requirement: Standard Product

Product ^*1		ID	Area	Spatial Resolution (Approx. size)	Required Accuracy^*2			Range	Remarks
Product ^*1		ID	Area	Spatial Resolution (Approx. size)	Release ^*3	Standard ^*4	Goal ^*5	Range	Remarks
Brightness Temp. (6 bands ^*6, 2 polarizations)		defined by processing level	Global	5 〜 50 km	±1.5 K	±1.5 K	System error ±1.0 K Variance error ±0.3 K	2.7 〜 340 K	System error as a max. amplitude at 150 K Variance error of 3σ at 150 K
A.	Total Precipitable Water	TPW	Global over ocean	15 km	±3.5 kg/m²	±3.5 kg/m²	±2.0 kg/m²	0 〜 70 kg/m²	Vertically integrated (columnar) water vapor amount. Except sea ice and precipitating areas.
	Cloud Liquid Water Content	CLW	Global over ocean	15 km	±0.10 kg/m²	±0.05 kg/m²	±0.02 kg/m²	0 〜 1.0 kg/m²	Vertically integrated (columnar) cloud liquid water. Except sea ice and precipitating areas.
	Precipitation	PRC	Tropics 〜 Temperate Zone	15 km	Ocean ±50 % Land ±120 %	Ocean ±50 % Land ±120 %	Ocean ±20 % Land ±80 %	0 〜 20 mm/h	Surface precipitation rate. Accuracy is defined as relative error (ratio of root-mean-square error to average precipitation rate) in 50km grid average.
O.	Sea Surface Temp.	SST	Global over ocean	50 km	±0.8 ℃	±0.5 ℃	±0.2 ℃	-2 〜 35 ℃	Except sea ice and precipitating areas. Goal accuracy is defined as monthly mean bias error in 10 degrees latitudes.
O.	Sea Surface Wind Speed	SSW	Global over ocean	15 km	±1.5 m/s	±1.0 m/s	±1.0 m/s	0 〜 30 m/s	Except sea ice and precipitating areas.
C.	Sea Ice Concentration	SIC	Polar region over ocean	15 km	±10 %	±10 %	±5 %	0 〜 100 %	Accuracy is expressed in absolute value of sea ice concentration (%).
L.	Snow Depth	SND	Global over land	30 km	±20 cm	±20 cm	±10 cm	0 〜 100 cm	Except ice sheets and dense forest areas. Accuracy is expressed in snow depth and defined as mean absolute error of instantaneous observations.
L.	Soil Moisture Content	SMC	Global over land	50 km	±10 %	±10 %	±5 %	0 〜 40 %	Volumetric water content over global land areas including arid and cold regions, except areas covered by vegetation with 2kg/m² water equivalent. Accuracy is defined as mean absolute error of instantaneous observations.

The brightness temperature was converted from the sensor output to the most basic observed quantity. Other physical quantities were converted from brightness temperature to physical quantities via a conversion algorithm.
Accuracy is expressed as root mean square error (RMSE) of the instantaneous value unless otherwise indicated. The accuracy of brightness temperature depends on the calibration accuracy of the on-board and ground processing. Accuracy of geophysical quantities depends on brightness temperature accuracy, algorithm performance, and validation methods.
Release accuracy is the minimum accuracy that can be released as data that can contribute to climate change analysis.
Standard accuracy is a useful and standard accuracy level based on AMSR and AMSR-E results.
Goal accuracy is the accuracy level that includes research elements such as algorithm performance and calibration accuracy improvement.
AMSR2 has 7 frequency bands, but in the mission requirement, 6.925 GHz and 7.3 GHz are counted as one band.

AMSR2 Mission Requirement Revision History (Standard product)

August 21, 2006

GCOM Mission Requirement Issued

Data Catalog
Mission Requirement
AMSR2
Research Product

AMSR2 Mission Requirement: Research Product

Product		ID	Area	Spatial Resolution (Approx. size)	Goal Accuracy ^*1	Range	Remarks
A.	Total Precipitable Water over Land	PWL	Global over land	15 km	±6.5 kg/m²	0 〜 70 kg/m²	Vertically integrated (columnar). Except vegetation area and cryosphere.
O.	10GHz (High-resolution) SST	SST	Global over ocean	30 km	±0.8 ℃	-2 〜 35 ℃	Except sea ice and precipitating areas.
	Multi-band SST	SST	Global over ocean	30 〜 50 km	±0.8 ℃	-2 〜 35 ℃	Except sea ice and precipitating areas.
	All-weather Sea Surface Wind Speed	ASW	Global over ocean	60 km	±7m/s	0 〜 70 m/s	Except sea ice areas. The goal accuracy is defined for the wind speed more than 17 m/s.
C.	High-resolution Sea Ice Concentration	HSI	Polar region over ocean	5 km	±15 %	0 〜 100 %	Accuracy is expressed in absolute value of sea ice concentration (%).
	Detection of Thin Sea Ice	TSI	Okhotsk Sea Bering Sea Hudson Bay	15 km	80 %	N/A	Sea ice area (≦ 30 cm) is defined as thin ice area. A flag representing whether thin ice area is dominant in a pixel is stored in a product. Accuracy is expressed in right answer rate (%).
	Sea Ice Motion Vector	SIM	Polar region over ocean	50 km	±6cm/s in latitude and longitude	0 〜 40cm/s	The two components of accuracy are the latitude component and the longitude component.
	Thin Ice Thickness (Thermal Ice Thickness)	TIT	Polar region over ocean	12.5 km	Thin solid ice:±10cm Active frazil:±3cm	0 〜 20 cm
	Sea Ice Thickness (>= 20cm) under development	SIT	Polar region,over ocean	15 km	±20 cm	20 〜 120 cm
L.	Snow Depth ^*2	SND	Global over land	30 km	±20 cm	0 〜 100 cm	Except ice sheets and dense forest areas. Accuracy is expressed in snow depth and defined as mean absolute error of instantaneous observations.
	Soil Moisture Content ^*2	SMC	Global over land	50 km	±10 %	0 〜 40 %	Volumetric water content over global land areas including arid and cold regions, except areas covered by vegetation with 2kg/m² water equivalent. Accuracy is defined as mean absolute error of instantaneous observations.
	Land Surface Temp.	LST	Global over land	15 km	Forest: ±3 ℃ Low vegetation: ±4 ℃	0 〜 50 ℃	Temperature at a canopy top is defined as land surface temperature. Excludes cases where the pixel contains more than a certain percentage of water, where the ground surface is frozen, or where there is snow cover.
	Soil Moisture Content (SMC) and Vegetation Water Content (VWC) based on the Land Data Assimilation Methodology	LDA	Global over land (snow free area)	0.25 degree	SMC: ±8 % VWC: ±1 kg/m²	SMC: 0 〜 40 % VWC: 0 〜 2 kg/m²	Profiles are retrieved for SMC.
	Vegetation Water Content under development	VWC	Global over land	10 km	±1 kg/m²	0 〜 4 kg/m²	-

Accuracy level, including research items such as algorithm performance and calibration accuracy improvement. Unless otherwise indicated, represents the root mean square error (RMSE) of instantaneous values. However, for "Thin Ice Thickness (Thermal Ice Thickness)", "Soil Moisture Content", and "Soil Moisture Content (SMC) and Vegetation Water Content (VWC) based on the Land Data Assimilation Methodology", mean absolute error (MAE) is expressed.
AMSR2 research products with algorithms under development for AMSR3.

AMSR2 Mission Requirement Revision History (Research Product)

December 16, 2021

LDA coverage area changed from "Africa and Australia" to "Global land (snow free area)"

April 21, 2021

Bering Sea and Hudson Bay were added to the Sea of Okhotsk as part of the TSI product release.

March 17, 2021

Change SIM goal accuracy from 3 cm/s to 6 cm/s

October 12, 2020

Release of 10GHz (High-resolution) SST and extension of its measurement range from "9 〜 35 ℃" to "-2 〜 35 ℃".

March 17, 2020

New research product approved: Sea Ice Thickness (< 20cm), Sea Ice Thickness (>= 20cm), Snow depth (SND), Soil Moisture Content (SMC),

SND and SMC are standard products, but data processed by algorithms under development for AMSR3 will be released as research products.

September 18, 2019

Renaming of LDA

November 26, 2018

New research product approved: Total Precipitable Water over Land (PWL)

March 5, 2015

New research product approved: 10GHz (High-resolution) SST, All-weather Sea Surface Wind Speed (ASW), Land Surface Temperature (LST), Vegetation Water Content (VWC), High-resolution Sea Ice Concentration (HSI), Detection of Thin Sea Ice (TSI), Sea Ice Motion Vector (SIM), Soil Moisture Content (SMC) and Vegetation Water Content (VWC) based on the Land Data Assimilation Methodology (LDA)