热带地理 ›› 2018, Vol. 38 ›› Issue (1): 72-81.doi: 10.13284/j.cnki.rddl.003003
李嘉琪1,白爱娟1,蔡亲波2
出版日期:
2018-01-05
发布日期:
2018-01-05
作者简介:
李嘉琪(1994―),女,重庆人,硕士,主要从事气候变化研究,(E-mail)495497079@qq.com
LI Jiaqi1,BAI Aijuan1,CAI Qinbo2
Online:
2018-01-05
Published:
2018-01-05
摘要: 采用1959―2014年中国西沙站和涠洲岛站及其临近陆地台站的基本气象观测资料,分析了2个海岛的气候变化特征及其与近岸陆地的差异。结果表明:1)近56年西沙和涠洲岛及近岸陆地气温变化均呈上升趋势,西沙增暖速率(0.19℃/10 a)大于涠洲岛(0.104℃/10 a)。显著的差异出现在近10年,西沙持续增暖(0.38℃/10 a),而涠洲岛气温却呈下降趋势(-0.48℃/10 a)。从季节变化上,2个海岛都有春季越来越暖、冬季越来越冷的趋势。与周围陆地的气温相比,2个海岛的气温均高于近海陆地,但增温速率却小于近岸陆地。2)分析近56年降水量的变化,发现海岛降水量、降水强度和降水天数均小于陆地。受冬、夏季风转换的控制,海岛及近岸陆地有旱季、雨季的划分,且近半个世纪以来降水量波动大、变化趋势不显著,但伴随降水天数的减少,降水强度呈显著增长趋势。对比2个海岛近10年的降水变化特征,发现西沙站的旱季有越来越旱的趋势,涠洲岛及近岸陆地无论旱季、雨季降水量都有增加的趋势,表现为湿润化的趋势。
李嘉琪,白爱娟,蔡亲波. 西沙群岛和涠洲岛气候变化特征 及其与近岸陆地的对比 [J]. 热带地理, 2018, 38(1): 72-81.
LI Jiaqi,BAI Aijuan,CAI Qinbo. Climate Change Characteristics of the Xisha Islands and Weizhou Island in China and the Comparison with the Coastal Land [J]. TROPICAL GEOGRAPHY, 2018, 38(1): 72-81.
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