Final Technical Report - weADAPT

model simulation was conducted for the whole region of Southeast Asia and also
southern part of People Republic of China, but the analysis and adjusting were performed
only on the lower region of Mekong River basin in Lao PDR, Thailand and Vietnam only
due to the limited availability of the observed climate date which is required for adjusting
process. The analysis of climate scenario in Cambodia area was also excluded under this
study due to insufficient data from Cambodia. The focused area of study, which covers
most part of Lao PDR, northeastern part of Thailand and Mekong River delta in Viet
Nam, is shown in the illustration below:
Figure 10: Geographic coverage of the analysis on climate change –
Mekong River basin in Lao PDR, Thailand and Viet Nam
The statistical adjustment process is based on cumulative rainfall using a nonlinear
function (log-log regression) to exponentially increase the daily variability. An
arbitrary rainfall threshold of 3 mm/day was applied to reduce number of rain days. The
observed data used for the adjusting of future climate information are from:
• Meteorology and Hydrology Department, Ministry of Agriculture and Forestry,
Lao PDR
• Meteorological Department, Ministry of Science and Technology, Thailand
• Sub-institute of Hydrometeorology of South Vietnam, Vietnam
Final technical report – AIACC AS07 30