资源简介

摘要： 地表微波发射率表征了地物向外发射微波辐射的能力,星载被动微波发射率估算可在宏观、大尺度上对陆表微波辐射进行整体表达,是被动微波地表参数定量反演中重要基础数据,也是在大尺度上获取陆表微波辐射特征的一种途径。本数据集利用搭载在Aqua卫星上的高级微波扫描辐射计(AMSR-E)和中分辨率成像光谱仪(MODIS)的同步观测特点,采用MODIS的地表温度和大气水汽产品数据作为输入,基于考虑大气影响的发射率估算模型,生产了全球晴空条件下AMSR-E传感器运行期间(2002年6月~2011年10月)的陆表多通道双极化微波瞬时发射率。通过产品低频无线电信号影响、数据间比对、分布统计、不同地表覆盖条件的发射率特征、频率依赖和相关性研究等开展验证性分析,结果表明:瞬时发射率的动态大\,细节表达丰富,月内日变化标准差在0.02以内,其时空变化、频率依赖和相关性等符合微波理论分析和自然物理过程理解。此套数据集还包括AMSR-E全生命周期的全球陆表逐日、侯、旬、半月及月产品,可用于开展星载被动微波遥感模拟、陆面模型以及陆表温度、积雪、大气降水/水汽、可降水量等反演研究。 关键词： 被动微波遥感;  AMSR-E;  微波发射率;  对比验证;  数据集     Abstract: Earth surface microwave emissivity,representing the capacity of the earth's surface emitting microwave radiation outwards,is one of the key physical quantities of microwave radiometric characteristics for earthsurface.Satellite-borne passive microwave emissivity shows an overall and macroscopic expression of the surface microwave radiation on a large scale.It is important basic data for empirical parameterization acquisition in the geophysical parameters quantitative inversion from passive microwave observations,and also an approach of understanding the land surface microwave radiation on a large scale.Considering the synchronous observation characteristic of the Advanced Microwave Scanning Radiometer (AMSR-E) and Moderate Resolution Imaging Spectroradiometer (MODIS) mounted on the Aqua satellite,taking surface temperature and atmospheric water vapor data from MODIS as input data,this data set produced multi-channel microwave instantaneous emissivity through the emissivity estimation model during the operating cycle (June 2002~October 2011) of AMSR-E sensor under the global clear-sky condition.The results obtained from inter\|comparison,statistical analysis and the validation analysis from the frequency dependence and the correlation under different land covers indicate that,the dynamic range of instantaneous emissivity is larger,the monthly diurnal standard deviationare within 0.02,and the Radio Frequency Interference analysis,spatial and temporal variation,frequency dependence and correlation are in consistence with the understanding of natural physical geography process and microwave emission model understanding.The dataset,which includes daily,five-day,ten\|day,semi\|monthly and monthly global land surface products within the AMSR\|E full life span,may be used in the inversion of satellite borne passive microwave remote sensing simulation,land surface model,land surface temperature,snow parameters,precipitation,water vapor and perceptible water content etc.

相关资源

1. 水质遥感监测的关键要素叶绿素a的反演算法研究进展
2. 基于无人机遥感技术的森林参数获取研究进展
3. 基于无线传感器网络的森林生态系统观测试验平台构建
4. 基于无人机激光雷达的森林冠层高度分析
5. 多源时序国产卫星影像的森林火灾动态监测
6. 基于无人机遥感技术的台风灾害倒伏绿化树木检测

下载说明

·如果您发现该资源不能下载，请通知管理员.gissky@gmail.com

·为确保下载的资源能正常使用，请使用[WinRAR v3.8]或以上版本解压本站资源,缺省解压密码www.gissky.net ，如果是压缩文件为分卷多文件，请依次下载每一个文件，并按照顺序命名为1.rar,2.rar,3.rar...，然后鼠标右击1.rar解压.

·为了保证您快速的下载速度，我们推荐您使用[网际快车]等专业工具下载.

·站内提供的资源纯属学习交流之用,如侵犯您的版权请与我们联系.