Coupling, Energetics, and Dynamics of Atmospheric Regions (CEDAR) Database at NCAR/HAOEntry ID: CEDAR_NCAR_HAO
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Abstract: The Coupling, Energetics, and Dynamics of Atmospheric regions (CEDAR) is a
program sponsored by the National Science Foundation (NSF) designed to enhance
the capability of ground-based instruments to measure the upper atmosphere and
to coordinate instrument and model data for the benefit of the scientific
community. The CEDAR Data Base (formally the Incoherent Scatter Radar Data
Base) is a ... cooperative project between the National Center for Atmospheric
Research (NCAR) and several institutions that provide upper atmosphere data and
model output for community use. The CEDAR Data Base contains: documentation,
catalogue information, geophysical indices, summary plots, analysis software,
and computer models. A catalogue is produced every year and is available on the
CEDAR instruments are located throughout the world. Only selected data from
each instrument is available in the CEDAR Data Base. The on-line CEDAR Data
Base contains information to contact investigators for additional data not
found in the Data Base.
The CEDAR Data Base currently contains approximately 10GB of data. A
complete inventory of data and data availability is obtainable from
The CEDAR Data Base consists of the following:
Geophysical Indices. Includes Dst, Kp, ap, Ap, solar 10.7 cm flux,
sunspot number, AE, and IMF parameters.
Large Model Output. Includes model output from the Assimilative
Mapping of Ionospheric Electrodynamics (AMIE), Thermosphere Ionosphere
General Circulation Model (TIGCM), and Global-Scale Wave Model (GSWM).
Incoherent Scatter Radar. This is the primary data in the CEDAR Data
Base. Includes ionospheric electron densities, ion velocities, and
electron and ion temperatures.
Ionospheric Doppler Radars. HF ionospheric doppler radars are organized into a
collection of radars called SuperDARN (Super Dual Auroral Radar Network).
Eleven radars have data in the CEDAR Data Base. Basic parameters include
line-of-sight plasma irregularity and velocity spread.
Digisondes. Consists of ion drift data from the Qaanaaq Digisonde.
Fabry-Perot Interferometers. Basic parameters from FPI are
brightness, neutral temperature, and line-of-sight neutral winds.
IR Michelson Interferometers. Data include neutral temperatures
derived from nightglow hydroxyl (OH).
Lidar. Basic Lidar parameters are photocounts, relative neutral number
density, and sodium or iron density.
Middle Atmosphere Radars. Data are from MST radars, MF radars, LF
radars, meteor wind radars and ST radars. There is only limited data
in the CEDAR Data Base. Parameters include line-of-sight neutral winds
Airglow Imagers and All-Sky Cameras. Data includes brightness data
from imagers. None of the imager data are in digital form. Some
airglow data is on video tape.
Models. Consists of both theoretical models and empirical models.
Source code is available from the CEDAR Data Base. Model output
consists of geomagnetic field data, electron densities, electric
fields, interpolations and models of NOAA and DMSP satellite data,
wind models, ionospheric parameters, and other data.
The CEDAR Data Base is accessible through the WWW and ftp, but users must have
a valid access form, available from the WWW or ftp (see Access and Use
constraints) or contact Barbara Emery (firstname.lastname@example.org ). See the WWW site
for additional information on accessing the data and Rules of the Road
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Data Set Citation
Dataset Originator/Creator: Emery, B.A. and R. M. Barnes
Dataset Title: CEDAR Data Base
Dataset Series Name: CEDAR Data Base Catalog
Dataset Release Place: Boulder, CO
Dataset Publisher: NCAR/HAOOnline Resource: http://cedarweb.hao.ucar.edu/wiki/index.php/Data_Services:General_O...
Start Date: 1966-01-01
Latitude Resolution: 13 km
Longitude Resolution: 24 km
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Vertical Resolution: Approx 80 km (atmospheric column)
Vertical Resolution Range: Vertical Resolution Ranges
Temporal Resolution: Approx 1 hour (day time orbit)
Temporal Resolution Range: Hourly - < Daily
ATMOSPHERE > AEROSOLS > DUST/ASH/SMOKE > UV ABSORBING AEROSOL INDEX
ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD FREQUENCY > RADIATIVE CLOUD FRACTION
ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD TOP PRESSURE > RADIATIVE CLOUD PRESSURE
ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION > REFLECTANCE
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE > COLUMN AMOUNT OZONE
ISO Topic Category
Quality The 'version 003' product is the second public release. The quality of this v003 product is based on improved calibration algorithm however this product is not fully validated yet. Please see below the detailed Quality assessment. Overall the quality of total ozone and AI data produced by OMTO3 is similar to that from TOMS. Based on experience with TOMS, the total ozone data provided in OMTO3 ... should have a root-mean squared error of 1-2%, depending on solar zenith angle, aerosol amount, and cloud cover. These errors are best described as pseudo-random: systematic over small areas with a unique geophysical regime, random over large areas contain mixture of geophysical regimes. Preliminary analyses show that OMTO3 data compare well with Dobson and Brewer stations. However for the most recent information on the OMTO3 data quality the data users are advised to see the data quality document available from the OMTO3 data product site(http://disc.gsfc.nasa.gov/Aura/OMI/omto3_v003.shtml).
Use Constraints This Data set (version 003/second public release) is not fully validated yet. Before using it for any research please read the data quality document provided by the OMTO3 algorithm team and available from http://disc.gsfc.nasa.gov/Aura/OMI/omto3_v003.shtml
Data Set Progress
Distribution Media: FTP
Distribution Size: Approx 35 MB per file
Distribution Format: HDF-EOS5
Email: Pawan.K.Bhartia at nasa.gov
NASA Goddard Space Flight Center Mailstop 613.3
Province or State: MD
Postal Code: 20771
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: Suraiya.Ahmad at nasa.gov
NASA Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
Ahmad, S. P., P. F. Levelt, P. K. Bhartia, E. Hilsenrath,
G. W. Leppelmeier, and J. E. Johnson, Atmospheric Products from
the Ozone Monitoring Instrument (OMI), Proceedings of SPIE
conference on Earth Observing Systems VIII, San Diego,
... California, Aug 3-8, 2003.
Bhartia, P. K. and C. W. Wellemeyer, OMI TOMS-V8 Total O3
Algorithm, Algorithm, Algorithm Theoretical Baseline Document:
OMI Ozone Products, P. K. Bhartia (ed.), vol. II, ATBD-OMI-02,
version 2.0, Aug. 2002.
Brinksma, E. J., K. F. Boersma, and P. F. Levelt, OMI-Validation
Requirements, May 16, 2003.
Froidevaux, L. and A. Douglass, Earth Observing System (EOS)
Aura Science Data Validation Plan, July 2001
Levelt, P.F., J. P. Veefkind, R. H. M. Voors, and J. de Vries,
Instrument Description, Algorithm Theoretical Baseline
Document: OMI Instrument, Level 0 - 1B processor, Calibration
Operations, P. F. Levelt (ed.), vol. I, ATBD-OMI-01,
version 2, Aug. 2002.
Levelt, P. F., B. van den Oord, E. Hilsenrath,
G. W. Leppelmeier, P. K. Bhartia, A. Malkki, H. Kelder,
R. J. van der A, E. J. Brinksma, R. van Oss, P. Veefkind,
M. van Weele, and R. Noordhoek, Science Objectives of
EOS-Aura's Ozone Monitoring Instrument (OMI), Proc. Quad. Ozone
Symposium, Sapporo, Japan, pp. 127-128, 2000.
Schoeberl, M.R., A.R. Douglass, E. Hilsenrath, P.K. Bhartia,
J. Barnett, J. Gille, R. Beer, M. Gunson, J. Waters,
P.F. Levelt, P. DeCola, The EOS Aura Mission, EOS,
Transactions, American Geophysical Union 85 , Number 18, 4 May
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-04-28
Last DIF Revision Date: 2013-04-29