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Global Change Master Directory (GCMD)
UARS PEM Level 2 AXIS 2 V001 (UARPE2AXIS2) at GES DISC
Entry ID: UARPE2AXIS2_001


Summary
Abstract: The UARS Particle Environment Monitor (PEM) level 2 Atmosphere X-Ray Imaging Spectrometer (AXIS) unit 2 daily product contains the X-ray high-resolution spectral data converted to number intensity units from the AXIS2 pixels mounted on the UARS body. PEM was flown on the UARS spacecraft to measure the type, amount, energy, and distribution of charged particles injected into the Earth's thermosphere, mesosphere, and stratosphere.

The PEM AXIS2 X-ray data cover roughly the energy range from 2 keV to 300 keV. There are eight AXIS2 pixels mounted in the AXIS2 housing, each viewing different directions. The AXIS2 pixels are aligned on the spacecraft to project about 45 degrees toward the +x axis direction from the Earthward pointing direction (+z axis). Each pixel of AXIS2 is staggered about the 45 degree direction in an every-other fashion. Pixel 1 is closest to the center line of the spacecraft and Pixel 8 is furtherest away; however, their ground projection is dependent on the spacecraft orientation.

There is one data file per day for the PEM AXIS2 product, and the temporal coverage is from Oct. 1, 1991 to Aug. 23, 2005. Spatial coverage for the AXIS2 product ranges between -80 and +80 degrees latitude. The AXIS2 data files are written in network binary format. For more information please review the PEM AXIS2 data format guide.

Related URL
Link: View Related Information


Link: View Related Information
Description: Access the data via HTTPS.


Link: View Related Information
Description: Use the Earthdata Search to find and retrieve data sets across multiple data centers.


Link: View Related Information
Description: The UARS Project Homepage.

Geographic Coverage
 N: 80.0 S: -80.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Creator: Winningham, David J., et al.
Dataset Title: UARS PEM Level 2 AXIS 2 V001
Dataset Series Name: UARPE2AXIS2
Dataset Release Date: 2006-06-14T00:00:00.000Z
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Version: 001
Data Presentation Form: Digital Science Data
Online Resource: https://disc.gsfc.nasa.gov/datacollection/UARPE2AXIS2_001.html


Temporal Coverage
Start Date: 1991-09-30
Stop Date: 2005-03-08


Location Keywords
GEOGRAPHIC REGION > GLOBAL


Science Keywords
SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX >X-RAY FLUX    [Definition]


Platform
UARS >Upper Atmosphere Research Satellite    [Information]


Instrument
PEM >Particle Environment Monitor    [Information]


Project
UARS >Upper Atmosphere Research Satellite    [Information]


Keywords
X-Rays
AXIS


Data Set Progress
COMPLETE


Data Center
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA    [Information]
Data Center URL: https://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA



Distribution
Distribution_Media: Online Archive
Distribution_Size: 35.0 GB
Distribution_Format: binary
Fees: None


Personnel
J. DAVID WINNINGHAM
Role: INVESTIGATOR
Phone: (210) 522-3075
Email: dwinningham at swri.edu
Contact Address:
Space Science Department
Southwest Research Institute
P.O. Drawer 28510
City: San Antonio
Province or State: TX
Postal Code: 78228-0510
Country: USA


RUDY A. FRAHM
Role: TECHNICAL CONTACT
Phone: (210) 522-3855
Email: rfrahm at swri.edu
Contact Address:
Space Science Department
Southwest Research Institute
P.O. Drawer 28510
City: San Antonio
Province or State: TX
Postal Code: 78228-0510
Country: USA


JAMES EDWARD JOHNSON
Role: METADATA AUTHOR
Phone: 301-614-5121
Email: James.Johnson at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Code 610.2
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-01-10
Last DIF Revision Date: 2018-11-30



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