**2.2.2 Snow water equivalent products**

#### **a. Global Monthly EASE-Grid Snow Water Equivalent Climatology**

This data set comprises global, monthly SWE from November 1978 to 2007, with periodic updates released as resources permit. Global data is gridded to the Northern and Southern 25 km Equal-Area Scalable Earth Grids (EASE-Grids) (Fig.5).


#### **b. AMSR-E/Aqua L3 Global Snow Water Equivalent EASE-Grids**

We also use the AMSR-E snow products to check the SWE variation and climatology over *Tibet Plateau*. The SWE\_Northern daily data (Tedesco, 2004) is used in the next process. The data characteristics are listed.


This data are processed into the maximum and average SWE for the *Tibet Plateau*.

Fig. 4. Sample image derived from MODIS/Aqua Snow Cover Daily L3 Global 0.05Deg

This data set comprises global, monthly SWE from November 1978 to 2007, with periodic updates released as resources permit. Global data is gridded to the Northern and Southern


We also use the AMSR-E snow products to check the SWE variation and climatology over *Tibet Plateau*. The SWE\_Northern daily data (Tedesco, 2004) is used in the next process. The


This data are processed into the maximum and average SWE for the *Tibet Plateau*.

**b. AMSR-E/Aqua L3 Global Snow Water Equivalent EASE-Grids** 

http://nsidc.org/data/modis/data\_summaries/cmg\_sample.html)

**a. Global Monthly EASE-Grid Snow Water Equivalent Climatology** 

25 km Equal-Area Scalable Earth Grids (EASE-Grids) (Fig.5).

CMG data set 08 February 2004 (cited from

**2.2.2 Snow water equivalent products** 




data characteristics are listed. - Time span: 2002~2010 - EASE-Grid Projection.







Fig. 5. Northern Hemisphere average snow water equivalent (mm) from passive microwave, with additional area indicated as snow by Northern Hemisphere EASE-Grid weekly snow cover in red, March, 2003.(cited:

http://nsidc.org/data/docs/daac/nsidc0271\_ease\_grid\_swe\_climatology/NL200303.NSID C8.BP\_VIS35.png)
