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Variations of Annual Minimum Snow and Ice Extent over Canada and Neighboring Landmass Derived from MODIS 250-m Imagery for 2000–2014
- Source :
- Canadian Journal of Remote Sensing. 42:214-242
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- Snow and ice are important hydrological resources. Their minimum spatial extent over land, here referred to as annual minimum snow/ice (MSI) cover, plays a very important role as an indicator of long-term changes and baseline capacity for surface water storage. Data from Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra satellite for the period of 2000–2014 were utilized in this study. The level-2 MODIS swath imagery for bands B1 to B7 was employed and the 500-m bands B3–B7 were spatially downscaled to a 250-m swath grid. The imagery is available daily with multiple overpasses. This allows for more accurate identification of annual minimum in comparison to high-resolution imagery (e.g., Landsat, ASTER, etc.) available at much coarser temporal rates. Atmospherically corrected 10-day clear-sky composites converted into normalized surface reflectance over the warm season (April 1 to September 20) were employed to identify persistent snow and ice presence. Results were compared with our...
- Subjects :
- 010504 meteorology & atmospheric sciences
0211 other engineering and technologies
02 engineering and technology
Snow
Warm season
01 natural sciences
Reflectivity
Advanced Spaceborne Thermal Emission and Reflection Radiometer
Geography
Climatology
General Earth and Planetary Sciences
Satellite
Moderate-resolution imaging spectroradiometer
Spatial extent
Surface water
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Remote sensing
Subjects
Details
- ISSN :
- 17127971 and 07038992
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Canadian Journal of Remote Sensing
- Accession number :
- edsair.doi...........a1389962cbcc473e168d1cba32ef1942