San Francisco Chronicle: Californians probably will have to cope with less water and more frequent and intense wildfires, heat waves and bad-air days throughout this century, according to studies released Wednesday by state climate experts. The studies, which Gov. Arnold Schwarzenegger ordered to help officials carry out the state’s ambitious plans to deal with climate change, provide the most detailed look ever at how hot and dry the state could get as global emissions drive up carbon dioxide levels in the …