C33D-0847
Seasonal change of snow and vegetation covers for validation of satellite-derived indices using time-lapse digital cameras
Wednesday, 16 December 2015
Poster Hall (Moscone South)
Konosuke Sugiura1,2, Shin Nagai3 and Rikie Suzuki2, (1)University of Toyama, Toyama, Japan, (2)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (3)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Department of Environmental Geochemical Cycle Research, Kanagawa, Japan
Abstract:
To investigate the time series of satellite indices with ground-based imagery data from the time-lapse digital cameras, we set up the time-lapse digital camera network in trans-Alaska. Simple time-lapse digital cameras were modified and have been continuously recording the surface condition imagery as the physical evidence. Seasonal changes of Terra/MODIS satellite indices (NDVI: Normalized Difference Vegetation Index, NDSI: Normalized Difference Snow Index, NDWI: Normalized Difference Water Index) in boreal forests of trans-Alaska from 2010 to 2012 have been investigated. It was confirmed that the NDVIs, NDSIs, and NDWIs change clearly with snow existence using the modified time-lapse digital cameras installed under severely cold conditions. In this presentation, we discuss the data obtained until now and the present conditions of the observation network. Further accumulated imagery data studies using the modified time-lapse digital cameras enable us to interpret the implication of satellite-derived indices in terms of the snow and vegetation cover variability on a wide area.
