Massachusetts Growing Degree Day and Precipitation Maps

A regression model that estimates monthly temperature and precipitation as a function of latitude, longitude, and elevation for the New England area was used to estimate annual growing degree days and precipitation for the state of Massachusetts. For details of the regression model please see the published paper (Ollinger, S.V., Aber, J.D., Federer, C.A., Lovett, G.M., Ellis, J.M., 1995. Modeling Physical and Chemical Climate of the Northeastern United States for a Geographic Information System. US Dept of Agriculture, Forest Service, Radnor, PA, USA).本研究采用针对新英格兰地区构建的回归模型，以纬度、经度与海拔为自变量估算月均气温与降水量，并基于该模型估算马萨诸塞州的年度生长度日数与降水量。如需了解该回归模型的详细信息，请参阅已发表文献：Ollinger, S.V.、Aber, J.D.、Federer, C.A.、Lovett, G.M.、Ellis, J.M.，1995年。《面向地理信息系统 (Geographic Information System) 的美国东北部物理与化学气候建模》，美国农业部林务局，宾夕法尼亚州拉德诺市，美国。