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Standard Product

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[ Standard Product ]

Product		Product ID	Areas	Grid (km)	Accuracy^*1			Range	Remarks
Product		Product ID	Areas	Grid (km)	Data release threshold	Standard	Goal	Range	Remarks
Brightness temperature (6 bands, 2 polarization)		Depends on Level^*2	Global	5 - 50	±1.5K	±1.5K	±1.0K ±0.3K	2.7-340K	System error as a max. amplitude at 150K Variance error of 3σ at 150K
Geophysical Products	Integrated water vapor	TPW	Global, over ocean	15	±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.
	Integrated cloud liquid water	CLW	Global, over ocean	15	±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	Global, except cold latitudes	15	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.
	Sea surface temperature	SST	Global, over ocean	50	±0.8 deg.C	±0.5 deg.C	±0.2 deg.C	-2-35 deg.C	Except sea ice and precipitating areas. Goal accuracy is defined as monthly mean bias error in 10 degrees latitudes.
	Sea surface wind speed	SSW	Global, over ocean	15	±1.5 m/s	±1.0 m/s	±1.0 m/s	0-30 m/s	Except sea ice and precipitating areas.
	Sea ice concentration	SIC	Polar region, over ocean	15	±10 %	±10 %	±5 %	0-100 %	Accuracy is expressed in absolute value of sea ice concentration (%).
	Snow depth	SND	Land	30	±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.
	Soil moisture	SMC	Land	50	±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.

*1 Accuracy is defined as root-mean-square error of instantaneous values unless otherwise stated. Assumed validation methodologies are not explained here.

*2 Product IDs of brightness temperature are defined as "ADN" for Level-1A, "BTB" for Level-1B, "RTB" for Level-1R, and "T06/T07/T10/T18/T23/T36/T89" for each band of Level-3.

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