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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

N: 90.0 S: 60.0 E: 180.0 W: -180.0

Data Set Citation

Dataset Originator/Creator: NASA, NOAA, NSF, Universities, Chemical Manufacturers Association, and Meteorological agencies overseas
Dataset Title: The First Airborne Arctic Stratospheric Expedition (AASE-I) and the Meteorological Measurement System (MMS) Data CD-ROM's
Online Resource: http://cloud1.arc.nasa.gov/aase/

Temporal Coverage

Start Date: 1989-01-01

Stop Date: 1989-02-28

Location Keywords

OCEAN > ARCTIC OCEAN
GEOGRAPHIC REGION > ARCTIC
GEOGRAPHIC REGION > POLAR
VERTICAL LOCATION > STRATOSPHERE
VERTICAL LOCATION > TROPOSPHERE

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT

Platform

NIMBUS-7 [Information]

NASA ER-2 >NASA Earth Resources-2 [Information]

Project

AASE >Airborne Arctic Stratospheric Expedition [Information]

SAM-II >Stratospheric Aerosol Measurement II [Information]

Keywords

CD-ROM

CO

HYDROGEN CHLORIDE

N2O

NASA ER-2

NITRIC OXIDE

O3

POTENTIAL VORTICITY

REACTIVE NITROGEN

UPPER AIR

Originating Center

ARC

Data Center

Earth Science Project Office, Earth Sciences Division, Ames Research Center, NASA [Information]
Data Center URL: http://www.espo.nasa.gov/
Dataset ID: AASE89

Data Center Personnel

Name: STEVE HIPSKIND
Email: steve.hipskind at nasa.gov
Contact Address:
NASA Ames Research Center

Distribution

Distribution_Media: CD-ROM

Personnel

K. ROLAND CHAN
Role: INVESTIGATOR
Contact Address:
NASA Ames Research Center
MS 245-5
City: Moffett Field
Province or State: CA
Postal Code: 94035
Country: USA

STEVE HIPSKIND
Role: TECHNICAL CONTACT
Email: steve.hipskind at nasa.gov
Contact Address:
NASA Ames Research Center

SCOTT A. RITZ
Role: DIF AUTHOR
Phone: 301-614-5126
Fax: 301-614-5268
Email: Scott.A.Ritz at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: Maryland
Postal Code: 20771
Country: USA

BRIAN TOON
Role: INVESTIGATOR
Email: toon at lasp.colorado.edu
Contact Address:
NASA Ames Research Center
City: Moffett Field
Province or State: CA
Postal Code: 94035
Country: USA

ADRIAN TUCK
Role: INVESTIGATOR
Email: adrian.f.tuck at noaa.gov
Contact Address:
NOAA Aeronomy Laboratory
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA

Publications/References

AASE Project Office (1988/1989), Airborne Arctic Stratospheric Expedition, NASA Ames Research Center, Moffett Field, CA 94035, An overview of the 1989 AASE.

Anderson, J.G., and O.B. Toon, (1993), Airborne Arctic Stratospheric Expedition II: An Overview, Geophys. Res. Lett., 20, 2499-2502

Creation and Review Dates

Last DIF Revision Date: 2011-04-15

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