This presentation will provide an overview of the OMPS products available at the GES DISC archive, as well as demonstrate the various data services provided by the GES DISC. Since the TOMS, SBUV, and EOS Aura (OMI, MLS, HIRDLS) data products are also available from the GES DISC archive, these can be easily accessed and compared with the OMPS data

Gerasimov, I.

Johnson, J.

Vollmer, Bruce E.

Wei, J.

NASA Technical Reports Server

Accessing Suomi NPP OMPS Products
through the GES DISC Online Data Services
J. Johnson1,2, J. Wei1,2 , I. Gerasimov1,2, B. Vollmer1
1 NASA Goddard Space Flight Center    2 ADNET Systems Inc.
NASA/Goddard Earth Sciences Data and Information Services Center (GES DISC)
The NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) is the
primary archive of the latest versions of atmospheric composition data from the Ozone Mapping
Profiler Suite (OMPS) mission on the Suomi National Polar-orbiting Partnership (NPP) satellite.
OMPS consists of three spectrometers: a Nadir Mapper (300-420 nm) with 50×50 km2 resolution at
nadir and 2600 km wide swath, a Nadir Profiler (250-310 nm) with 250×250 km2 footprint, and a
three-slit Limb Profiler (290-1000 nm) making 3 vertical profiles spaced about 250 km apart with 1-2
km vertical resolution from the surface up to ~100 km altitude. OMPS measures primarily ozone,
both total column and vertical profiles, but also includes measurements of NO2 and SO2 total and
tropospheric columns, as well as aerosol extinction profiles. Also available are the Level-1B
calibrated and geolocated radiances. All data products are generated at the OMPS Science
Investigator Processing System (SIPS) at NASA/GSFC.
This presentation will provide an overview of the OMPS products available at the GES DISC archive,
as well as demonstrate the various data services provided by the GES DISC. Since TOMS, SBUV,
and EOS Aura (OMI, MLS, HIRDLS) data products are also available from the GES DISC archive,
these can be easily accessed and compared with the OMPS data.
Please note that all users must now register first before being able to download data. As always, data
are free for all users!
Overview
https://disc.gsfc.nasa.gov
Finding the Data
Access Data Remotely
Exploration and Visualization
A13D-2101
Data
Product
Processing 
Level
Date 
Coverage
File 
Granularity
N
ad
ir
 M
ap
pe
r
OMPS-NPP L3 NM Ozone (O3) Total Column 1.0 deg grid daily 3 2012-01-26 
onwards
Daily
OMPS-NPP L2 NM Ozone (O3) Total Column swath orbital 2 2011-11-13 
onwards
Orbit
OMPS-NPP L2 NM Nitrogen Dioxide (NO2) Total and Tropospheric Column swath orbital 2 2012-01-26
onwards
Orbit
OMPS-NPP L2 NM Sulfur Dioxide (SO2) Total and Tropospheric Column swath orbital 2 2012-01-26 
onwards
Orbit
OMPS-NPP L1B NM Radiance EV Calibrated Geolocated swath orbital 1B 2011-11-13 
onwards
Orbit
N
ad
ir
 P
ro
fil
er OMPS-NPP L2 NP Ozone (O3) Vertical Profile swath orbital 2 2011-11-13 
onwards
Orbit
OMPS-NPP L1B NP Radiance EV Calibrated Geolocated swath orbital 1B 2011-11-13 
onwards
Orbit
Li
m
b 
Pr
of
ile
r
OMPS-NPP L2 LP Ozone (O3) Vertical Profile swath daily 3slit 2 2012-02-07 
onwards
Daily
OMPS-NPP L2 LP Aerosol Extinction Vertical Profile swath daily 3slit 2 2012-02-07 
onwards
Daily
OMPS-NPP L1G LP Radiance EV Wavelength-Altitude Grid swath orbital 3slit 1B Coming soon Orbit
All OMPS products are written using the HDF5 file format, and include both Climate Forecast (CF)
and Attributes Convention for Data Discovery (ACDD) metadata. CF metadata improves data
interoperability.
OMPS data are archived at the GES DISC at
https://disc.gsfc.nasa.gov. Typing “OMPS”
into the keyword search field will bring up a
list of all “OMPS” related products. The list
can be refined by time range, spatial region, or
with various facets, such as measurement.
Each product has a landing page with a
summary describing the product, along with
links to access the data and documentation.
Online services, such as subsetting, are listed
under Data Access when available.
The OPeNDAP protocol allows one to bring
data directly into an application, such as IDL,
Matlab, Panoply or IDV, without actually
downloading the file to a computer first.
Select variables and copy the data URL into
the application.
OPeNDAP also supports a catalog feature for
loading in data stored in multiple files.
OMPS level-3 gridded data can be explored and
visualized using the online GES DISC Giovanni tool.
Users can use Giovanni to make maps, animations,
time-series, and comparison plots with other data sets.
A new GES DISC online L2 visualization tool (see talk
IN24B-06 “Challenges in Visualizing Satellite Level 2
Atmospheric Data with GIS Approach”) will allow users
in the future to quickly view the OMPS level-2 data.
Data Subsetting
Zoomed-In Region 
shows the Oct 2017 
California wildfire
Map Average SH 
for October
2013
2014
2015
2016
2017
Time Series <60ºS
Fall (SON)
Search Product List Data Landing Page
Data Products
A new on-the-fly set of subsetters are being developed by the GES DISC. These will allow users to subset
the data files spatially (bounding box, region/shapefile, or distance from a point), by set of variables, or
by dimension (i.e. certain wavelength bands, pressure levels, etc.). The subsetter is being implemented for
the Aura OMI Level 2 data, and in the future will be extended to support the OMPS data products. For
more information please see poster IN41B-0038 “Complexities in Subsetting Satellite Level 2 Data”
Subsetting Interface
Only the pixels within the 10º×10º 
bounding box over Beijing, China
Original full orbit swath file 
passing over Beijing, China
Swath subset covering the 10º×10º 
bounding box over Beijing, China
https://ntrs.nasa.gov/search.jsp?R=20170012185 2019-08-30T16:56:40+00:00Z


Accessing Suomi NPP OMPS Products through the GES DISC Online Data Services

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