link to JAPANESE

Products

[ Standard Product ]

GEOPHYSICAL PRODUCTS OF GCOM-W1
Product Areas Grid
(km)
Accuracy*1 Range  
Data release
threshold
Standard Goal
Integrated water vapor 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 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 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 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 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 Polar region,
over ocean
15 ±10 % ±10 % ±5 % 0-100 % Accuracy is expressed in absolute value of sea ice concentration (%).
Snow depth 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 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.


JAXA logo Earth Observation Research Center,
Japan Aerospace Exploration Agency
Copyright© JAXA EORC All rights reserved.
link to GCOM Mission Homepage
Contact Us | Links | Sitemap |