WASHINGTON — Climate scientist Sarah Cooley has been fired, rehired and fired again. Cooley joined the National Oceanic and Atmospheric Administration last year to lead the agency’s efforts to address ocean acidification. Now she is one of hundreds of probationary workers at NOAA whose jobs were slashed by the Trump administration in February. When a federal court blocked the move weeks later, the workers were reinstated, but that was not the end of their turmoil.