“Climate change has been occurring throughout Earth’s history and given what we know, we should never expect climates to stay the same. That being said there clearly are short and long term variations (cycles) in temperature, but our situation today is showing that humans have likely changed the trajectory and disrupted the natural cycling. There are only two long term stations in the Napa area … the Napa State Hospital and St Helena and their changes are well documented. While there could be an urban signal in these two sites, the USHCN has examined these and considered them to have minimal urbanization.”