Seasonal variation in isotopic composition and the origin of precipitation over Bangladesh

Progress in Earth and Planetary Science

Table 1 Relative contribution of vapor source regions to moisture in total precipitable water (TPW) for each season

Season	Site	LND	BOB	ARS	NID	SID	PAC
Pre-monsoon	Sylhet		26%	28%	10%
	Dhaka		29%	28%	11%
	Chittagong		31%	27%	11%
Indian Summer Monsoon	Sylhet	14%	16%	16%	14%	15%
	Dhaka	10%	18%	17%	15%	16%
	Chittagong		20%	17%	17%	17%
Post-monsoon	Sylhet	24%					23%
	Dhaka	26%	10%				21%
	Chittagong	17%	12%				25%

Values less than 10% were omitted. LND land surface (the recycling of water), BOB the Bay of Bengal, ARS the Arabian Sea, NID the northern part of the Indian Ocean, SID the southern part of the Indian Ocean, PAC the Pacific Ocean