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The First Airborne Arctic Stratospheric Expedition (AASE-I) and the Meteorological Measurement System (MMS) Data CD-ROM's

Entry ID: AASE89

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Summary

Abstract: The first CD-ROM contains the Second Edition of data pertaining to the First Airborne Arctic Stratospheric Expedition (AASE-I) which was based in Stavanger, Norway during January and February, 1989. The First Edition of this dataset, produced in March 1990, was corrupted by many data errors introduced during production of the CD-ROM. The form of the errors was a random conversion of characters to ... spaces but hopefully the random data errors are not present in this edition. The second CD-ROM contains all of the 5 Hz data from the ER-2 Meteorological Measurement System (MMS) taken during the 1989 AASE-I associated with flights during which mesoscale disturbances were observed. This disc was generated as an appendix to the primary AASE-I CD-ROM dataset.

The data consists of measurements collected onboard the NASA ER-2 and DC-8 aircraft, ozonesonde soundings from three stations (Angmagssalik and Scoresbysund, Greenland, and Lerwick, U.K.), aerosol and temperature profiles from the SAM II spacecraft, global grid point values of Nimbus-7 TOMS ozone, and selected radiosonde soundings from stations in the region of the experiment. This expedition was aimed at studying the production and loss mechanisms of ozone in the north polar stratospheric environment, and the effect on ozone distribution of the Arctic polar vortex and of the cold temperatures associated with the formation of Polar Stratospheric Clouds (PSC). The mission was organized and funded by NASA, NOAA, NSF, universities, Chemical Manufacturers Association, and meteorological agencies overseas, utilizing similar instrumentation that was deployed during the Airborne Antarctic Ozone Experiment (AAOE) of 1987.

Theory teams provided calculations of: potential vorticity along the ER-2 flight path; cross-sections of potential vorticity, temperature, and geopotential heights along the DC-8 flight path; cross-sections of Clx, Fx, HCl, HNO3, and NOy along the DC-8 flight path; global grid point values of temperature, geopotential heights, and horizontal winds on selected pressure surfaces; northern hemispheric grid point values of potential vorticity and pressure on selected potential temperature surfaces.

Because of its limited range, the ER-2 is not be able to survey the entire Arctic region. The ER-2 measured ozone, chlorine monoxide, nitric oxide, reactive nitrogen, nitrous oxide, total water, bromine monoxide, nitric acid, condensation nuclei, aerosol size distribution, whole air sampling, and particle chemistry and size. The DC-8 can cover a greater range, enabling it to survey the polar vortex and air processed through the cold temperature region of the polar vortex. The DC-8 collected information similar to that of the ER-2, along with the vertical distribution of ozone and aerosols, methane, and in situ measurements of ozone.

All files within this release are standard ASCII files with variable length records terminated by (ASCII decimal values 13 and 10). In general, the file naming convention uses a two character prefix to identify the measurement, followed by a six digit number giving the year, month, and day (GMT) of the flight (or balloon launch). To identify the measurement platform, a three character name as in ER2, DC8, or Bhh is used to denote the data is from the ER-2, DC-8, or balloon (hh denotes the GMT hour of launch).

AASE-I discovered that while NOx and to some degree NOy were perturbed within the arctic vortex, there was little evidence for desiccation. Under these (in contrast to the antarctic) marginally perturbed conditions, however, CLO was found to be dramatically enhanced such that a large fraction of the available (inorganic) chlorine resided in the form of CLO and its dimmer CLOOCL.

A follow-up phase, AASE-II, was conducted in 1991 and 1992.

Related URL

Link: GET DATA

Link: VIEW PROJECT HOME PAGE

Description: Airborne Arctic Stratospheric Expedition (AASE) Home Page

Geographic Coverage

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Spatial coordinates

N: 90.0

S: 60.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: Goddard Space Flight Center (GSFC)

Dataset Title: Nimbus-2 Medium-Resolution Infrared Radiometer (MRIR) Imagery of the Earth and Atmosphere at Daytime on 4 x 5 inch Film Sheets

Dataset Release Place: Greenbelt, MD, USA

Dataset Publisher: Goddard Earth Science Data and Information Services (GES DISC)

Version: 001

Data Presentation Form: Digital Science Data

Temporal Coverage

Start Date: 1966-05-15

Stop Date: 1966-07-28

Location Keywords

GEOGRAPHIC REGION > GLOBAL

VERTICAL LOCATION > LAND SURFACE

VERTICAL LOCATION > STRATOSPHERE

VERTICAL LOCATION > TROPOSPHERE

Data Resolution

Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Temporal Resolution: Approx 1 hour (daytime orbit)

Science Keywords

ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE

ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

NIMBUS-2

Instrument

MRIR NIMBUS-2 > Medium-Resolution Infrared Radiometer on NIMBUS-2

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

CWIC > CEOS WGISS Integrated Catalog

Use Constraints Please cite the dataset originator if you use this data.

Ancillary Keywords

CLOUD COVER

Data Set Progress

COMPLETE

Originating Center

NSSDC

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

Data Center URL: http://disc.gsfc.nasa.gov/
Dataset ID: MRIRN2IM

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 (FTP)

Distribution Size: approx. 650 MB per TAR file containing 2.5 MB images

Distribution Format: TAR containing JPEG 2000 images

Fees: No Fee

Personnel

JAMES EDWARD JOHNSON

Role: TECHNICAL CONTACT

Role: DIF 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

Publications/References

GSFC (1966), Nimbus II Users' Guide

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2011-07-19

Last DIF Revision Date: 2011-07-27

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