- EarthScope USArray Transportable Array (TA) Surface Pressure Observations Sampled at 1 Hz Frequency
Jacques, A. A., J. D. Horel, E. T. Crosman, and F. L. Vernon, 2015:
Central and Eastern United States Surface Pressure Variations
Derived from the USArray Network. Mon. Wea. Rev., 143, 1472-1493
The EarthScope USArray Transportable Array (TA) contains over 400
seismic station platforms deployed in a pseudo-grid fashion (spaced
approximately 70 km apart) across a portion of the United States.
This array is part of a large initiative within the geoscience field
to improve earth mapping and understanding of subsurface properties.
Individual platforms report for 1 to 2 years and then are retrieved
and redeployed farther east. Atmospheric pressure sensors were added
to many platforms in 2010 while the array was deployed in the
Central U.S. to assist with identification of seismic signals
produced by atmospheric phenomena. These sensors have resulted in a
tremendous dataset of surface pressure observations with high
temporal frequency not commonly found in atmospheric sciences
outside of smaller field campaigns.
This dataset provides surface pressure observations at 1 Hz
frequency from these deployments beginning 1 January 2010. The years
2010-2011 feature deployments over the central U.S. Great Plains,
2012-2013 over the interior eastern U.S., and 2014-2015 along the
U.S. east coast. While average station life is 1 to 2 years, some
deployments have been kept in place and thus have longer records.
Further, the next phase of the TA project has begun with several
platforms deployed in Alaska, which will continue over the next few
years. There are also deployments located near the Cascade Mountain
range in the Pacific Northwest. Data files are provided in HDF5
format, where a single file contains data for a particular year and
station. Basic metadata and quality control files are also
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