TY  - SER
AU  - Bui Tuyen
AU  - Exell,Robert H.B.
AU  - Prida Wilbulswas, 
AU  - Bhattacharya,Sribas C.
ED  - The Government of Japan and AFME (French Agency  for Energy Management), 
TI  - The relation between duration of sunshine and synoptic wind patterns at 700 mb over Thailand
T2  - Research studies project report
PY  - 1987///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Wind power
KW  - Thailand
KW  - Solar radiation
N1  - A research study (12 credits) submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development; Research Studies Project Report (M. Eng..) - Asian Institute of Technology, 1987
N2  - This research study was to make an attempt to classify daily air  motion patterns (wind patterns) at 700 mbar level over Thailand, by  objective statistical classification technique and to investigate the  relation between duration of sunshine and these wind patterns. Daily (07  LST) data at four stations (Chiangmai, Ubon Rachathani, Bangkok and  Songkhla) of four years (1969,1974,1975, and 1976) were used. Each year  was devided into three seasons: summer monsoon (June-October), winter  monsoon (November-February) and transitional period (March-May).  Four most representative wind patterns in each season were found;  few days remained unclassified. Association between these wind patterns  and daily duration of sunshine was studied and wind patterns are shown  to determine distinct distributions of sunshine duration. Certain  conclusions were drawn that can be useful for judgement of availability  of solar radiation, especially for applications using direct component  of solar radiation, in different parts of the region. Association between  the eqivalent potential temperature at 700 mbar level and daily duration  of sunshine was also investigated for the summer monsoon 1969. The result  is in good accordance with the findings of GARST ANG (196 7) and HARRIS  (1970) that the duration of sunshine tends to increase with the equivalent  potential temperature decreasing
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