Effect of Temperature on Frost-Free Days and Length of Crop Growing Season across Southern Ontario  

作　　者：Ramesh Pall Rudra Rituraj Shukla Trevor Dickinson Pradeep Kumar Goel Jaskaran Dhiman Ramesh Pall Rudra;Rituraj Shukla;Trevor Dickinson;Pradeep Kumar Goel;Jaskaran Dhiman(School of Engineering, University of Guelph, Guelph, Canada;The Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Canada)

机构地区：[1]School of Engineering, University of Guelph, Guelph, Canada [2]The Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Canada

出　　处：《American Journal of Climate Change》2023年第4期700-718,共19页美国气候变化期刊（英文）

摘　　要：Climate change has an impact on various climatic variables. In this study our focus is mainly on temperature characteristics of climate parameter. In temperate and humid regions like southern Ontario, the effect of climate change on Frost-free days in winter is distinctive. The average annual temperature is going upward but the extreme increase is in the winter temperature. Winter average temperature is going up by about 2˚C. However, extreme daily minimum temperature is going up by more than 3˚C. This climate effect has a great impact on the nature of precipitation and length of frost-free days. The snowfall over winter months is decreasing and the rainfall is increasing. However, the number of frost-free days during late fall months, early winter months, late winter months and early spring months are increasing. This result reveals an increase in length of the growing season. This research focuses on the effect of change in climatic variables on Frost-free days in Southern Ontario. Therefore, special attention should be given to the effect of change in climate Frost-free conditions on length of crop growing in winter season for potential investigation.Climate change has an impact on various climatic variables. In this study our focus is mainly on temperature characteristics of climate parameter. In temperate and humid regions like southern Ontario, the effect of climate change on Frost-free days in winter is distinctive. The average annual temperature is going upward but the extreme increase is in the winter temperature. Winter average temperature is going up by about 2˚C. However, extreme daily minimum temperature is going up by more than 3˚C. This climate effect has a great impact on the nature of precipitation and length of frost-free days. The snowfall over winter months is decreasing and the rainfall is increasing. However, the number of frost-free days during late fall months, early winter months, late winter months and early spring months are increasing. This result reveals an increase in length of the growing season. This research focuses on the effect of change in climatic variables on Frost-free days in Southern Ontario. Therefore, special attention should be given to the effect of change in climate Frost-free conditions on length of crop growing in winter season for potential investigation.

关 键 词：Climate Change Minimum Temperature Frost-Free Days SNOWFALL Crop Growing Season Southern Ontario 

分 类 号：P46[天文地球—大气科学及气象学]