. >> can can is a research meterologist at the scrips institute of oceanographer at,uc san diego and researcher at is tusds and serve at the climate research division director. his work is understanding climate variability and changes particularly as they apply to the pacific ocean and north america. his specific work concerns impacts of climate changes on water resources and other sectors in west europe north america and he also worked on large scale exchange of heat and water between the ocean and the atmosphere. dan is also a director of the california climate change center a center that works to improve and forecast for decision makers in the california region and i'm sure it's information we can take throughout the united states. dan recieved a bachelor of science in meterologist and oceanographer and received in 1971 from university that makes us about the same age dan, but i'm just a broken down lawyer and economists. he received a, ph.d., in ee in san diego. his speech today will focus on climate change and it's challenge to our water supply. please welcome doctor dan cohan.