The onset of winter in northern latitudes can cause seasonal affected disorder, a form of mood disorder, in some individuals.在高纬度地区，冬天到来可能会对某些人造成季节性失调，这是情绪失调的一种。In the middle to high latitudes rainfall has risen steadily over the last 20-30 years.在过去二三十年里，中高纬度地区的降雨量持续增加。