Evaluating the consistency of remote sensing based snow depth products in arid zone of Western China

Qiming Zhou, Bo Sun

Research output: Chapter in book/report/conference proceedingConference contributionpeer-review

Abstract

Snow cover is a sensitive indicator of global climate change. Among various snow cover parameters, snow depth which can indicate snow accumulation is essential for retrieving snow water equivalent. In arid zone of western China, based on different inversion models, snow depth products retrieved from passive microwave remote sensing sensors have been issued. However, none of them can promise a high accuracy due to the spatial heterogeneity of snow cover especially in mountain areas with complex terrain. This study aims to analyse the reliability of existing long-term snow depth products in arid zone of western China. Two datasets are compared including GlobSnow snow water equivalent (SWE) product and snow depth dataset provided by Environmental and Ecological Science Data Center for West China. Statistical techniques like regression and intra-class correlation coefficient (ICC) models are employed to examine the consistency of these two remote sensing based snow depth products in a selected sampling site. More than 260 samples during three years are tested covering from snow falling to snow melting periods. Result shows that there is a discrepancy between the two datasets. Accordingly, remote sensing based snow depth measurement is not reliable in mountain areas in arid zone of western China. This study gives an awareness of the stabilities of current snow depth detection models. A further study is expected to calibrate snow depth products based on in-situ observation and measurements from ground monitoring stations.

Original languageEnglish
Title of host publicationInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Science 2012: XXII ISPRS Congress
PublisherInternational Society for Photogrammetry, Remote Sensing
Pages367-370
Number of pages4
VolumeXXXIX-B7
DOIs
Publication statusPublished - Aug 2012
Event22nd Congress of the International Society for Photogrammetry and Remote Sensing, ISPRS 2012 - Melbourne, Australia, Melbourne, Australia
Duration: 25 Aug 20121 Sep 2012

Publication series

NameInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
PublisherInternational Society for Photogrammetry and Remote Sensing
ISSN (Print)1682-1750

Conference

Conference22nd Congress of the International Society for Photogrammetry and Remote Sensing, ISPRS 2012
Country/TerritoryAustralia
CityMelbourne
Period25/08/121/09/12

Scopus Subject Areas

  • Information Systems
  • Geography, Planning and Development

User-Defined Keywords

  • Data reliability
  • Depth
  • Evaluation
  • Global-environmental-databases
  • Snow ice
  • Western China

Fingerprint

Dive into the research topics of 'Evaluating the consistency of remote sensing based snow depth products in arid zone of Western China'. Together they form a unique fingerprint.

Cite this