Release Notes for Cryosphere Products (updated on Nov. 1, 2004)
| Discipline | Product Name | Product Code | Accuracy （goal） |
Estimated Accuracy for Ver. 1 | Estimated Accuracy for Ver. 2 |
|---|---|---|---|---|---|
|
Cryosphere |
Snow impurities | SNWI | 30% | 400% | 200% |
| Snow grain size (865nm ch.) | SNWG | 20% | 100% | 75% | |
| Snow grain size (1.64um ch.) (Note1) | SNWGS | 20% | 100% | 400% | |
| Snow surface temperature (Note1) | SNWTS | 2K | 100% | 5K | |
| Snow/Sea Ice Covered Area | SCFG | 5% | 30% | 10% |
Known problems or concerns (Ver.2)
Snow impurities / Snow grain size/ Snow surface temperature
| Discipline | Product Name | Product Code | Accuracy （goal） |
Estimated Accuracy |
|---|---|---|---|---|
|
Cryosphere (Note1) |
Snow grain size | SNWG | 20% | 100% |
| Snow impurities | SNWI | 30% | 400% | |
| Snow/Sea Ice Covered Area | SCFG | 5% | 30% |
Note1: Due to the lack of sufficient truth data the
accuracy of snow grain size and impurities
products is still preliminary. Further ground truth observations coincident with
MODIS (GLI-
alternative) observation are to be carried out for more precise estimation of
product accuracy.
Known problems or concerns (Ver.1)
Snow grain size / Snow impurities