Summary

Description

This data set is part of the NASA Cold Land Processes Field Experiment (CLPX). Parameters include snow depth, surface wetness, surface roughness, canopy, and soil temperature, measured at Fraser, North Park, and Rabbit Ears MSAs on 19-24 February and 25-30 March 2002. CLPX consists of ground, airborne, and satellite measurements of snow and frozen ground. The CLPX uses a set of nested study areas to permit a detailed examination of cold land processes, modeling, and measurement over a wide range of physiographic conditions and spatial scales. The nested study areas are the Large Regional Study Area (LSA) consisting of 4.5 x 3.5 degrees in north-central Colorado and south-central Wyoming, Meso-cell Study Areas (MSAs) that are 25 km x 25 km, Intensive Study Areas (ISAs) that are 1 km2, and Sectors (four sectors per ISA, with 100-m grid spacing per sector). Temporally, the data collection focuses on two seasons, between 2001 and 2004: mid-winter (when conditions are generally frozen and dry) and early spring (a transitional period when both frozen and thawed, dry and wet, conditions are widespread).