EOSDIS Data News: June 23, 2017
The MEaSUREs Greenland Image Mosaics from Sentinel-1A and 1B, Version 1 dataset is now available at NASA's National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This dataset, part of NASA's Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, provides 6 and 12-day 50 m resolution image mosaics of the Greenland coastline and ice sheet periphery. The mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Sentinel-1A and 1B imaging satellites, between January 2015 and April 2017.
NASA's Oak Ridge National Laboratory DAAC (ORNL DAAC) published Snowmelt Timing Maps Derived from Moderate Resolution Imaging Spectroradiometer (MODIS) for North America, 2001-2015: This dataset provides snowmelt timing maps (STMs), cloud interference maps, and a map with the count of calculated snowmelt timing values for North America. The STMs are based on the MODIS standard 8-day composite snow-cover product MOD10A2 for the period 2001-01-01 to 2015-09-06. The STMs were created by conducting a time-series analysis of the MOD10A2 snow maps to identify the DOY of snowmelt on a per-pixel basis. Snowmelt timing (no-snow) was defined as a snow-free reading following two consecutive snow-present readings for a given 500-m pixel. The count of STM values is also reported, which represents the number of years on record in the STMs from 2001-2015.
ORNL DAAC published the Carbon Monitoring System (CMS) Global 0.5-deg Wetland Methane Emissions and Uncertainty (WetCHARTs v1.0) dataset: This dataset provides global monthly wetland methane (CH4) emissions and uncertainty data products derived from an ensemble of multiple terrestrial biosphere models, wetland extent scenarios, and CH4:C temperature dependencies. The data are at 0.5 by 0.5-degree resolution. Two model output data products are included in WetCHARTs v1.0: an output from the full ensemble for 2009-2010 and an output from a limited subset for 2001-2015. The intended use of the products is as a process-informed wetland CH4 emission and uncertainty dataset for atmospheric chemistry and transport modelling (WetCHARTs).
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