Short Name:
DISCOVER-AQ_Aircraft_Navigational_Data_B200

NASA B200 Aircraft Navigational Data Collected During the First DISCOVER-AQ Project

The overarching objective of the Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) investigation was to improve the interpretation of satellite observations to diagnose near-surface conditions relating to air quality. To diagnose air quality conditions from space, reliable satellite information on aerosols and ozone precursors was needed for specific, highly correlated times and locations to be used in air quality models and compared to surface- and aircraft-based measurements. DISCOVER-AQ provided an integrated dataset of airborne and surface observations relevant to the diagnosis of surface air quality conditions from space. These records pertain to the Maryland mission that took place from 1/10/2013 to 2/8/2013. The NASA Langley airborne High Spectral Resolution Lidar (HSRL) is used to characterize clouds and small particles in the atmosphere, called aerosols. From an airborne platform, the HSRL scientist team studies aerosol size, composition, distribution and movement. The HSRL instrument is an innovative technology that is similar to radar; however, with lidar, radio waves are replaced with laser light. Lidar allows researchers to see the vertical dimension of the atmosphere, and the advanced HSRL makes measurements that can even distinguish among different aerosol types and their sources. The HSRL technique takes advantage of the spectral distribution of the lidar return signal to discriminate aerosol and molecular signals and thereby measure aerosol extinction and backscatter independently. It measures aerosol backscatter and depolarization at 532 and 1064 nm and aerosol extinction at 532 nm.

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