项目名称: 中国紫外辐射气候学特征及其历史数据重构方法研究
项目编号: No.41275165
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 胡波
作者单位: 中国科学院大气物理研究所
项目金额: 56万元
中文摘要: 紫外辐射气候学特征是气候、陆地生态系统演替变化研究的关键因子之一。紫外辐射不仅对地球气候(变化)和大气(光)化学具有重要意义,而且对地球生态系统也具有重要意义。紫外辐射气候学及历史数据重构方法的研究是当前大气辐射学研究的前沿课题,但全国尺度的紫外辐射变化规律认知还较少,紫外辐射气候学特征仍不清楚。项目拟利用中国科学院陆地生态系统研究网络(CERN)地基辐射联网观测的长期数据进行紫外辐射气候学研究,通过分析数据揭示我国紫外辐射长期时空变化规律。由于地基观测数据的离散性和观测周期较短,因此需要建立基于辐射传输模式的紫外辐射空间插值与历史数据重构模式。在研究中拟建立紫外辐射重构修正因子查算表;进而利用查算表、总辐射、气溶胶光学厚度、臭氧等历史数据进行历史紫外辐射数据重构;进而将参数化重构方案与辐射传输重构模式耦合建立全天候紫外辐射重构方法;综合长期观测与历史重构数据获得我国紫外辐射气候学特征。
中文关键词: 紫外辐射;杂合辐射模式;重构;时空分布;中国
英文摘要: The climate chracteristcs of Ultraviolet radaiton(UV) is primary paramater for the study on climate change and the Ecologic System Evolution. UV radiation plays an important role in climate change and photochemical reactions. Besides this, UV radiation plays an important role in Ecosystem Research. Study on UV climate characteristics and reconstruction method are leading issues of study on atmospheric radiation process. However, only a few studies have investigated long-term trends in UV radiation in China. The UV climate characteristics are indistinct. UV radiation and broadband solar radiation (Rs) that was measured from 2005 to 2015 by the Chinese Ecosystem Research Network (CERN), will be used to investigate and determine the spatio-temporal characteristics of the UV radiation and the UV fraction (the ratio of UV radiation to Rs), in China. Long-term measurements of UV radiation are rare and datasets are only available for some locations. Therefore, rich data of the UV radiation may be gathered for studying the UV climate characteristics. Knowledge of past UV radiation levels is of increasing interest in order to estimate long-term biological effects The spatial interpolation method and Reconstructions of history ultraviolet radiation base on atmospheric radiation transmission model are necessary for UV clim
英文关键词: ultraviolet radiation;hybrid model;reconstruction;spatiotemporal characteristics;China