About ROBERTSON D M
About Univ. Wisconsin-Madison, WI, USA
About RAGOTZKIE R A
About Univ. Wisconsin-Madison, WI, USA
About MAGNUSON J J
About Univ. Wisconsin-Madison, WI, USA
About Climatic Change
About climatic variation
About Wisconsin
About Climatology,climatic change
About 歴史
About 気候変動
About 湖
About 結氷