陆面产品的全球陆表变化示范研究  

Demonstrative Research on Global Land Surface Change of Land Surface Products

作　　者：曾晓东[1] 曾红玲[2] 徐兴奎[1] 刘波[2] 朱家文[1] Zeng Xiaodong;Zeng Hongling;Xu Xingkui;Liu Bo;Zhu Jiawen(Institute of Atmospheric Physics, Chinese Academy of Sciences;National Climate Center)

机构地区：[1]中国科学院大气物理研究所 [2]国家气候中心

出　　处：《科技资讯》2016年第34期254-254,共1页Science & Technology Information

摘　　要：该研究目标是对项目生成的长时间序列遥感数据产品进行全球陆表变化的特征分析,并开展对该产品在地球系统模式模拟中的应用示范研究。(1)分析了遥感全球陆表特征参量的时空特征及变化趋势;(2)研究植被叶子物候特征与碳积累的变化,建立了基于叶面积指数的叶子物候的统计模型;分析物候的空间特性,包括全球分布格局、物候日期的全球分布特征及区域尺度的分布特征;进行物候数据在全球变化研究的应用示范等;(3)进行了陆表特征参量产品在地球系统模式中的应用示范。利用GLASS数据集进行陆表-大气耦合模式模拟,研究其对地表气温、对流层气温、降水等气候因素的多年平均值、变化趋势、年际变化等的影响,发现应用可体现植被长期演变的GLASS数据集后,可明显改善对模拟地表气温的变化趋势及年际变化等的模拟。This research assesses the general features of global land surface change based on the GLASS global land surfaceparameter products,and studies the capability of land products in improving the simulation performance of the climate andEarth system models.The main outcomes are:(1)Providing quantitative analysis and evaluation of global land surface parameterchange trend and space-time features;(2)Developing a statistical model of leaf phenology based on leaf area index,and theglobal vegetation phenology data sets of1985-2010are generated.The spatial and temporal characteristics of leaf phenologyat global and regional scale are investigated.(3)GLASS LAI dataset is applied to improve the land-atmosphere couplesimulation,and the impacts of land surface products on the simulation of annual mean,interannual variability and trend ofclimate factors such as temperature and precipitation are investigated.Results show that GLASS products can represent thelong-term variation of terrestrial ecosystem characteristics and can improve the simulation of trend and interannual variabilityof surface temperature.

关 键 词：陆表特征参量 空间分布及变化趋势 物候期 地球系统模型模拟性能 

分 类 号：P9[天文地球—自然地理学]