Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41501412 |
| 基于智能优化算法的山区MODIS积雪面积产品重建研究 | |
| 侯金亮 | |
| 主持机构 | 中国科学院寒区旱区环境与工程研究所 |
| 开始日期 | 2016 |
| 结束日期 | 2018 |
| 资助经费 | 200000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Although MODIS snow cover products have high accuracy in the flat area under the clear sky conditions, the existing MODIS snow cover products do not have a high enough accuracy in the mountainous areas of Northwest China; in addition, there are a large amount of pixels will missing snow information due to the impacts of cloud cover, which makes the MODIS snow area products space-time discontinuous and seriously affects the accuracy of MODIS snow cover products. We take Northern Xinjiang as the study area, the project is aimed at the mountainous MODIS snow cover fraction (SCF) retrieval methods with remote sensing technique based on intelligent optimization algorithms, includes: 1) for pixels have not been polluted by cloud cover, our task is to develop an intelligent optimization model for improving mapping precision of mountainous SCF, an artificial neural network (ANN) is trained to learn the complex nonlinear relationship between SCF and multiple factors; 2) for cloud covered pixels, our task is to fill the cloud pixels with simultaneously consideration of temporal and spatial information, a multi-objective evolutionary algorithm method is used to obtain the continuous spatio-temporal MODIS SCF data set; 3) reconstructing MODIS SCF products of Northern Xinjiang between 2000 and 2018, then evaluating the accuracy of this reconstruction products, and further analyzing the spatial and temporal distribution and variation characteristics of snow cover in the Northern Xinjiang. This project will provide the basic data support to analysis the utilization and management of water resources caused by snow cover changes, and the response of snow under the condition of climate change; the research production has important academic and applied values. |
| 中文关键词 | 遥感 ; MODIS积雪面积/积雪覆盖率 ; 去云 ; 人工神经网络 ; 多目标进化算法 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346865 |
| 推荐引用方式 GB/T 7714 | 侯金亮.基于智能优化算法的山区MODIS积雪面积产品重建研究.2016. |
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