Snow Depth (Standard Product, Research Product)
Please note that the standard product distributed from G-Portal is still available as usual.
Product Overview
Product Overview
Product Name | Snow Depth | ||
---|---|---|---|
Product Type | Research Product | Standard Product | |
Processing Level | L2 (Swath data *2) and L3 (Grid data: EQR, Polar stereo NH) | L2 (Swath data *2) and L3 (Grid data: EQR, Polar stereo NH) | |
Product ID | SND | SND | |
Spec. *1 | Area | Global over land | Global over land |
Spatial Resolution | approx. 30 km | approx. 30 km | |
Accuracy Requirement | 20 cm *3 | 20 cm *3 | |
Range | 0 〜100 cm | 0 〜100 cm | |
Latest Version | AMSR2: ver. 1.0 2022-09-20 release AMSR-E: ver. 1.0 2022-09-20 release |
AMSR2: ver. 2.1 2015-03-26 release AMSR-E: ver. 8 2019-07-05 release |
|
Product Period | AMSR2: July 2012 〜 AMSR-E: July 2002 〜 October 2011 |
AMSR2: July 2012 〜 AMSR-E: July 2002 〜 October 2011 |
|
Data Download | GCOM-W Research Product Distribution Service | Globe Portal System (G-Portal) | |
Data Format | HDF5 AMSR2 Higher Level Format 2.7MB |
HDF5 AMSR2 Higher Level Format 2.7MB |
|
Stored Data |
(1) Snow Depth [cm] (2) Snow Water Equivalent [cm] |
(1) Snow Depth [cm] (2) Snow Water Equivalent [cm] |
|
Data Quality Flag | L2 SND Quality Flag (SMSA ver. 3.0) 85KB |
L2 SND Quality Flag 263KB |
|
Algorithm Version | SMSA v3.0 (R Kelly et al., 2019) | v2.0 3.9MB PDF page 86 |
|
Validation Result | Algorithm overview and validation result (SMSA 3.0) 454KB |
AMSR2 Product Update 12MB PDF page 43 |
- The specifications are defined in the AMSR2 Mission Requirement. The required accuracy is the standard accuracy of standard product defined in the mission requirement.
- Swath data is a format in which data for each footprint is stored in a two-dimensional array (observation points in scanning direction x number of scanning lines) in order of observation time.
- Except ice sheets and dense forest areas. Accuracy is expressed in snow depth and defined as mean absolute error of instantaneous observations.
Reference
Reference
Revision History
Revision History
AMSR-E Research Product SND ver. 1.0 with algorihtm SMSA v3.0