Analysis of future climate scenarios and their impact on agriculture in eastern Arkansas, United States

• Main Authors: Magugu John W., Feng Song, Huang Qiuqiong, Zhang Yongjun, West Grant H.
• Format: Article
• Language: English
• Published: Sciendo 2018-06-01
• Series: Journal of Water and Land Development
• Subjects: agriculture; climate change; climate scenarios; precipitation; temperature
• Online Access: http://www.degruyter.com/view/j/jwld.2018.37.issue-1/jwld-2018-0029/jwld-2018-0029.xml?format=INT

Impact of climate change on crop growth is dynamic and difficult to quantify due to heterogeneity of the associated effects and their interactions within the Earth system. The main objective of this study is to establish how future climate change might affect agriculture, through an assessment of temperature and precipitation driven parameters. These include percentage number of rainy days with extreme precipitation, percentage of extreme precipitation relative to wet days, first fall frost days, last spring frost days, growing degree days, growing season length and the total precipitation. Results show modest increase in total precipitation with a slight increase in extreme precipitation, representing up to 2.2% increase by 2060 under representative concentration pathway (RCP 8.5) scenario. There would be late first fall frost days, early last spring frost days and increased growing season length by up to 2 weeks in 2060. The growing degree days are projected to increase under all scenarios for all crops, with cotton showing the largest increase of up to 37% relative to the baseline period.