气候变化领域集成服务门户(CCPortal): One-year (2012-2013) TerraSAR-X backscatter and coherence stacks for different landscape types in the Lena River Delta, Siberia

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.873554
	One-year (2012-2013) TerraSAR-X backscatter and coherence stacks for different landscape types in the Lena River Delta, Siberia
	Antonova; Sofia; Kääb; Andreas; Heim; Birgit; Langer; Moritz; Boike; Julia
发布日期	2017-03-15
数据集类型	dataset
英文简介	Satellite-based monitoring strategies for permafrost remain under development and are not yet operational. Remote sensing allows indirect observation of permafrost, a subsurface phenomenon, by mapping surface features or measuring physical parameters that can be used for permafrost modeling. We have explored high temporal resolution time series of TerraSAR-X backscatter intensity and interferometric coherence for the period between August 2012 and September 2013 to assess their potential for detecting major seasonal changes to the land surface in a variety of tundra environments within the Lena River Delta, Siberia. The TerraSAR-X signal is believed to be strongly affected by the vegetation layer, and its viability for the retrieval of soil moisture, for example, is therefore limited. In our study individual events, such as rain and snow showers, that occurred at the time of TerraSAR-X acquisition, or a refrozen crust on the snowpack during the spring melt were detected based on backscatter intensity signatures. The interferometric coherence showed marked variability; the snow cover onset and snow melt periods were identified by significant reduction in coherence. Principal component analysis provided a good spatial overview of the essential information contained in backscatter and coherence time series and revealed latent relationships between both time series and the surface temperature.
空间范围	Median Latitude: 72.950000 * Median Longitude: 126.550000 * South-bound Latitude: 72.000000 * West-bound Longitude: 123.600000 * North-bound Latitude: 73.900000 * East-bound Longitude: 129.500000
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215337
推荐引用方式 GB/T 7714	Antonova,Sofia,Kääb,et al. One-year (2012-2013) TerraSAR-X backscatter and coherence stacks for different landscape types in the Lena River Delta, Siberia.2017-03-15.https://doi.org/10.1594/PANGAEA.873554.