Hydrological Modeling for SE Asia

Older pages

Early work
A look at PR/TMI coverage
TMI wet spots
TRMM Data download cookbook
Thermal Microwave Rainfall
March 2002 bil files from TRMMM 2A12 data
Leaf Area Index
Three Rivers and SRTM
Images of 6+ years of rainfall
New station data 2000/10/1-2004/4/4
New (1/2002-2/2004) bils of 2A12 rainfall at 1/12-degree resolution
Mekong Profile

Seven Basins

In 2009, we supplemented our VIC analysis of the Mekong with six other basins. Basin boundaries are the provisional boundaries created from 15-arcsececond DEMs by the HydorSHEDS project. Yes,we see that river deltas are not displayed. They are modeled by other means.

As the VIC model involves many vertical layers and timesteps, we must use a spatial resolution that is much coarser than our topographic resolution, though it is still finer than some our input data layers. We have written our own algorithms to consolidate the 3-arcsecond flow directions to coarser resolution. Here are the basins as represented by 5-arc-minute cells. Note that some of the undrained basins are represented at this scale.

These are the basins represented as 15-minute grid cells.

Seven Basins - Land Cover

MODIS 2003 (MOD12Q1 Land Cover Product - MODIS/Terra Land Cover 96 Day L3 Global 1 km ISIN Grid - IGBP land cover classification) tiles were acquired and mosaiced for the region. MODIS supervised IGBP classification are shown on this image.
Some of the land cover classifications were reclassified to match vegetation classes and their attributes used previously by the UW group for the Mekong VIC model(Costa-Cabral et al. 2008). The reclassified categories are shown on this image.
The Mekong VIC model is being run at a 1/4 degree cell size. 1/4 degree cell units of analysis are shown in red compared to the 1km MODIS data.
The percentage of different land cover area for every 1/4 degree cell size of analysis were then extracted in tabular form for use with the VIC model inputs.

Questions: Harvey Greenberg