平均大概50%多一点。今年的高覆盖让我们在内河看到了水鸟大聚会

来源: 2014-02-24 04:38:55 [博客] [旧帖] [给我悄悄话] 本文已被阅读:

这是数据
www.weather.com/news/weather-winter/great-lakes-ice-cover-largest-century-20140207

Great Lakes Peak Ice Coverage