NARSTO EPA_SS_BALTIMORE JHU LIDAR Backscatter and Mixing Height DataEntry ID: NARSTO_EPA_JHU_LIDAR
Abstract: LIDAR measurements were taken from May 2001 to September 2002
during the Baltimore Experiment of the U.S. EPA Particulate
Matter Supersites Program by the Johns Hopkins University (JHU),
Department of Geography and Environmental Engineering. A
miniature elastic backscatter LIDAR was operated at several
Baltimore locations in the vertical mode with typical resolution
range of 3 m, typical time ... steps of 5 seconds, and ranges of
4.5-8 km. All vertical profile measurements of aerosol
backscatter were taken during daytime with continuous sampling
and can be used to describe composition, dynamics, and extent of
the mixing layer and the air aloft. Mixing heights were
determined from profile data under cloud-free
conditions. Included in this data set are the large ASCII files
of the aerosol backscatter data, the calculated mixing height
data, and a companion HTML application with color images of the
LIDAR profiles of the backscatter signals from aerosols.
(Click for Interactive Map)
Start Date: 2001-05-22Stop Date: 2002-09-05
ISO Topic Category
Quality Final. Due to an error in the LIDAR system's telemetry data
acquisition software, the range values as written in the TDA
files (line 13) are incorrect. The software error was
discovered post analysis. To properly use the TDA data, a
correction factor of 1.25 (linear multiplication) must be
applied to obtain the correct range value. That is, instead of
0, 3, 6, 9 ^?4490.89 m, the correct values are 0, 3.75, 7.5,
11.25 ^?5613.6 m.
Role: DIF AUTHOR
Email: support-asdc at earthdata.nasa.gov
NASA Langley Atmospheric Science Data Center User and Data Services NASA Langley Research Center Mail Stop 157D
Province or State: VA
Postal Code: 23681-2199
Role: TECHNICAL CONTACT
Email: mariana at jhu.edu
Email: mbparlange at jhu.edu
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Creation and Review Dates
DIF Creation Date: 2004-01-09
Last DIF Revision Date: 2004-01-22