1. EOSDIS Data News Archive
  2. EOSDIS Data News: May 11, 2018

EOSDIS Data News: May 11, 2018


NASA's Global Hydrology Resource Center Distributed Active Archive Center (GHRC DAAC) published the Global Precipitation Measurement Ground Validation (GPM-GV) Airborne Snow Observatory (ASO) Olympic Mountains Experiment (OLYMPEX) dataset which contains snow depth, bare Earth surface, land surface classification and a Red, Green, Blue (RGB) composite image. The data are provided at 3 m spatial resolution and are available as part of the GPM-GV OLYMPEX field campaign held in the Pacific Northwest during late 2015 to early 2016. The ASO dataset was collected by a Riegl Q1560 scanning LiDAR and an ITRES CASI-1500 imaging spectrometer, both part of ASO. The ASO flew during two separate periods, February 8-9, 2016 and March 29-30, 2016, to represent mid-winter and max-snow amounts in the Olympic Mountains. The dataset also contains “no snow” measurements made in September 2014. These bare earth measurements are used to derive snow depth from the Feb/Mar 2016 observations. The data are provided in GeoTIFF format.

GHRC DAAC has also published the GPM-GV Snow Depth Monitoring System OLYMPEX dataset which consists of snow depth, temperature, and relative humidity measurements made during the GPM-GV OLYMPEX held on the Olympic Peninsula in the Pacific Northwest of the United States. The data were collected using snow depth poles, time lapse cameras, temperature/relative humidity sensors, and manual snow surveys. The analyzed data files are available in netCDF-3 data format. The dataset includes the individual camera photos (JPG images) of snow poles taken every hour during daylight at up to 3 cameras/poles per study site location. A Microsoft Excel data file contains results of a manual snow survey taken at specific locations during the ASO OLYMPEX overflights, which function as validation for the airborne data. In total, measurements contained in this dataset extend from September 5, 2014 through August 20, 2016, but the primary field campaign data were collected during the fall 2015 to spring 2016 OLYMPEX field campaign time period.


Update for IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies, Version 1. NASA's National Snow and Ice Data Center DAAC (NSIDC DAAC) has published data through 26 November 2017 for the dataset IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies, Version 1.


NASA's Socioeconomic Data and Applications Center (SEDAC) released the Historical Urban Population: 3700 BC - AD 2000 dataset on 4 May. The dataset, developed by former UWG member K. Seto of Yale University, provides population estimates for settlements at different points in time across six millennia based on diverse historical data sources. See: http://sedac.ciesin.columbia.edu/data/set/urbanspatial-hist-urban-pop-3700bc-ad2000.

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