摘要
海陆温差是海-陆间热力对比的重要表征,对区域乃至全球气候产生重要影响。研究基于2001—2021年中分辨率成像光谱仪(MODIS)遥感数据,研究了中国东部地区地表温度、海表温度以及海陆温差的时空变化及区域差异特征。结果表明:2001—2021年中国东部地区地表温度和海表温度均呈显著上升趋势,上升幅度分别为0.34℃/10a和0.32℃/10a;夜间地表温度和海表温度的上升态势更突出;各季节中,冬季地表温度和夏季海表温度增幅最大,分别达0.45℃/10a和0.43℃/10a(P<0.05);空间上,中国东部地表温度总体呈南高北低的格局特征,海表温度则表现出从东北向西南递增、近岸低于远岸的特征。研究时段内,中国东部地区海陆温差通常为负值,海表温度总体高于地表温度,且离海岸线越近的缓冲区范围内海陆温差越小;100 km、200 km和300 km缓冲区范围内年际海陆温差总体呈减小趋势,其中100 km缓冲区范围内的降幅最大;各季节中,春季和冬季海陆温差呈减小趋势,夏季和秋季的呈增大趋势;空间上,以30°N为界,以北和以南区域的海陆温差分别呈减小和增大趋势。
The temperature disparity between sea and land plays a pivotal role in assessing thermal distinctions,exerting a significant influence on regional and even global climate.This study utilized MODIS remote sensing data spanning from 2001 to 2021 to investigate temporal and spatial variations,as well as regional disparities,in land surface temperature,sea surface temperature,and the land⁃sea temperature difference in Eastern China.The findings revealed noteworthy increases in both surface temperature and sea surface temperature in Eastern China during 2001—2021,with increments of 0.34℃/10 a and 0.32℃/10 a,respectively.The upward trend in nighttime temperatures was more prominent.Seasonally,the significant magnitudes were observed in winter for surface temperature and in summer for sea surface temperature,each experiencing increments of 0.45℃/10 a and 0.43℃/10 a,respectively(P<0.05).Spatially,Eastern China typically exhibited a pattern of higher land surface temperatures in the southern regions and lower temperatures in the northern areas.Sea surface temperatures escalated from the northeast to the southwest,with near⁃shore sea temperatures being lower than those further offshore.The land⁃sea temperature difference in Eastern China consistently exhibited negative values,signifying that sea surface temperatures generally exceeded surface temperatures from 2001 to 2021.Moreover,the closer to the coastline,the smaller land⁃sea temperature difference the buffer zone.The interannual variation in land⁃sea temperature difference across the 100 km,200 km,and 300 km buffer regions displayed a general declining trend,with the most substantial decline within the 100 km buffer zone.Seasonally,the land⁃sea temperature difference showed a decreasing trend in spring and winter,while an increasing trend in summer and autumn.Additionally,the land⁃sea temperature difference generally decreased in the north and increased in the south of 30°N.
作者
董丽洁
王晓利
桂峰
侯西勇
DONG Lijie;WANG Xiaoi;GUI Feng;HOU Xiyong(Marine Science and Technology College,Zhejiang Ocean University,Zhoushan 316022,China;Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China;Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Chinese Academy of Sciences,Yantai 264003,China;Shandong Key Laboratory of Coastal Environmental Processes,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China)
出处
《生态学报》
CAS
CSCD
北大核心
2024年第14期6097-6110,共14页
Acta Ecologica Sinica
基金
国家自然科学基金项目(41901133)
中国科学院战略性先导科技专项(XDA19060205)
中国科学院海洋大科学中心前沿重点部署项目(COMS2020Q07)。
