kenneth kunkel is a senior researcher with the north carolina institute for climate studies.m welcome to you. in your view, has hurricane harvey if not conclusively been linked to climate change then at least been exacerbated by it? i think there is at least some role in the intensity of harvey. the fuel for a hurricane is moisture that comes from the ocea ns is moisture that comes from the oceans and the wall of the ocean waters, the more moisture that is available for the hurricane. in this case, the gulf of mexico waters are, 01’ case, the gulf of mexico waters are, or were, case, the gulf of mexico waters are, 01’ were, warmer case, the gulf of mexico waters are, or were, warmer than the historical norm and probably one component of thatis norm and probably one component of that is the overall warming that we've seen over the northern hemisphere oceans in the last three 01’ hemisphere oceans in the last three orfour hemisphere oceans in the last three or four decades. hemisphere oceans in the last three orfour decades. but is hemisphere oceans in the last three or four de