UARS Particle Environment Monitor (PEM) Level 3TP V004 (UARPE3TP) at GES DISC

The Particle Environment Monitor (PEM) Level 3TP data product consists of daily, 65.536 second and 2.048 interval time-ordered, vertical profiles of electron and proton rates. PEM was made up of four instruments: the Atmospheric X-Ray Imaging Spectrometer (AXIS), the High Energy Particle Spectrometer (HEPS), the Medium Energy Spectrometer (MEPS), and the Vector Magnetometer (VMAG). PEM was flown on NASA's Upper Atmosphere Research Satellite (UARS) to measure the type, amount, energy, and distribution of charged particles injected into the Earth's thermosphere, mesosphere, and stratosphere. The PEM Level 3TP data are processed with the version 4 algorithm.

The PEM level 3TP data are a special data product, providing higher temporal resolution than the level 3AT data, with the HEPS and MEPS instrument data in separate files. The HEPS profiles are made every 65.536 seconds, and the MEPS profiles are made every 2.048 seconds.

Data are on the UARS standard altitude levels (in km) given by:

z(i) = 5 * i, i <= 12 z(i) = 60 + (i - 12) * 3, 13 <= i <= 32 z(i) = 120 + (i - 32) * 10, 33 <= i <= 50

The data files are available in a binary record oriented format.

Data and Resources

Additional Info

Field Value
Maintainer JAMES JOHNSON
Last Updated March 31, 2025, 19:17 (UTC)
Created March 31, 2025, 19:17 (UTC)
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation Winningham, David J., et al.. 1998-08-26. UARPE3TP. Version 004. UARS Particle Environment Monitor (PEM) Level 3TP V004. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/UARPE3TP_004.html. Digital Science Data.
creator Winningham, David J., et al.
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/UARPE3TP_004.png
harvest_object_id 443a3eb5-c552-4e0f-bbd8-527fc46c3983
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C1273348498-GES_DISC
issued 1997-06-03
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1273348498-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 1997-06-03
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name UARPE3TP
source_datajson_identifier true
source_hash a7c0ab5434068a1bf3504d2511f8272422bb0423bd0ba9812595a3984e6b76bf
source_schema_version 1.1
spatial -180.0 -80.0 180.0 80.0
temporal 1991-10-01T00:00:00Z/1999-12-31T23:59:59.999Z
theme {UARS,geospatial}