Link to Web Site Portal Home
  [  Return to Record   ]

The Stratosphere-Troposphere Exchange Project (STEP) Data on CD-ROM

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: The Stratosphere-Troposphere Exchange Project (STEP) Data on CD-ROM
Description:
Abstract:
This CD-ROM contains data collected from the Stratosphere-Troposphere Exchange Project (STEP) conducted onboard the NASA ER-2 aircraft in January and February, 1987 based in Darwin, Australia. This mission was the last of 6 STEP missions which started with the Variability and Global Tropospheric Experiment (GTE) Coop assignment in April 1984, based in Moffett Field, California. Altogether, 4 science missions and 2 intercalibration missions comprised STEP, with the science missions designed to investigate different aspects of stratosphere-troposphere exchange (in mass, trace gases, and aerosols), including cloud-free and cloud-dominated mechanisms in both the mid-latitudes and the tropics. STEP also observed the extreme dryness of the stratosphere. STEP was carried out under NASA and the National Oceanic Atmospheric Administration (NOAA). The Darwin, Australia phase of STEP utilized 15 instruments and accessed the world's highest, coldest tropopause as well as the largest penetrating cumulonimbus anvils. The flights were designed to test a dehydration mechanism proposed by Danielsen (1982), as well as to acquire sufficient data to test and develop other hypotheses. STEP's first mission was flown in April-May 1984 using six instruments on the NASA U-2 aircraft. The most striking result was the discovery in the stratosphere of highly laminated structures of ozone, water vapor, and condensation nuclei. The U-2 wind measurements indicated that the laminae are caused by waves that fold mixing ratio and potential vorticity surfaces. The folding process greatly increases the vertical gradients of the mixing ratios and the potentials for small-scale instabilities. The latter lead to irreversible mixing; thus a reversible wave-generated transport is rendered irreversible by small-scale instabilities.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: The Stratosphere-Troposphere Exchange Project, An Overview and Handbook, 1986. STEP Office, NASA Ames Research Center MS 245-5, Moffett Field, CA 94035. Chan, K.R., S.G. Scott, S.W. Bowen, S.E. Gaines, and E.F. Danielsen, Velocity Fluctuations in the Stratosphere During Large-Scale Cyclogenesis, EOS Trans. Amer. Geophys. Union, 66, 235, 1985. Danielsen, E.F., A Dehydration Mechanism for the Stratosphere, Geophys. Res. Lett., 9, 605-608, 1982. Danielsen, E.F., Potential Vorticity Distributions and the Meteorological Context for NASA's Multiaircraft Exchange Experiments, EOS Trans. Amer. Geophys. Union, 66, 235, 1985. Danielsen, E.F., Summary of Experimental Evidence and Implications to Theory of Stratospheric-Tropospheric Exchange, EOS Trans. Amer. Geophys. Union, 66, 236, 1985. Kelly, K.K., Water Vapor Measurements in the Vicinity of a Tropopause Fold, EOS Trans. Amer. Geophys. Union, 66, 235, 1985. Kritz, M.A. Cosmogenic Radionuclide Measurements in the Vicinity of a Tropopause Fold, EOS Trans. Amer. Geophys. Union, 66, 236, 1985. Russell, P.B., E.F. Danielsen, and R.A. Craig, The NASA Spring 1984 Stratosphere-Troposphere Exchange Experiments: Science Objectives and Operations, EOS Trans. Amer. Geophys. Union, 66, 235, 1985. Starr, W.L. J.F. Vedder, and E.F. Danielsen, Distribution of Ozone Mixing Ratio and Potential Vorticity in the Stratosphere During STEP Flights, EOS Trans. Amer. Geophys. Union, 66, 235, 1985. Wilson, J.C., W.T. Lai, and S. Smith, Correlation Between Condensation Nuclei, Ozone, and Water Vapor Observed in the NASA STEP Experiment, EOS Trans. Amer. Geophys. Union, 66, 235, 1985.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19840401
Ending_Date: 19870228
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 130.0
East_Bounding_Coordinate: -120.0
North_Bounding_Coordinate: 45.0
South_Bounding_Coordinate: -30.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL EXTINCTION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > CLOUD CONDENSATION NUCLEI
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AIR QUALITY > CARBON MONOXIDE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > TRACE GASES/TRACE SPECIES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > ATMOSPHERIC PRESSURE MEASUREMENTS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > VORTICITY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD FREQUENCY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD CONDENSATION NUCLEI
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD TYPES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > CARBON DIOXIDE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > CARBON MONOXIDE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > MOLECULAR NITROGEN
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE
Theme_Keyword: NASA ER-2 > NASA EARTH RESOURCES-2
Theme_Keyword: HYGROMETERS
Theme_Keyword: MMS > METEOROLOGICAL MEASUREMENT SYSTEM
Theme_Keyword: PROFILERS
Theme_Keyword: PHOTOMETERS
Theme_Keyword: TEMPERATURE PROFILERS
Theme_Keyword: SPECTROMETERS
Theme_Keyword: STEP > STRATOSPHERE-TROPOSPHERE EXCHANGE PROJECT
Theme_Keyword: Aerosol
Theme_Keyword: Cd-rom
Theme_Keyword: Climatology
Theme_Keyword: Cloud
Theme_Keyword: Condensation Nuclei
Theme_Keyword: Nasa Er-2
Theme_Keyword: Potential Vorticity
Theme_Keyword: Step
Theme_Keyword: Upper Air
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENVIRONMENT
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > PACIFIC OCEAN
Place_Keyword: CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA
Place_Keyword: GEOGRAPHIC REGION > EQUATORIAL
Place_Keyword: GEOGRAPHIC REGION > MID-LATITUDE
Place_Keyword: VERTICAL LOCATION > STRATOSPHERE
Place_Keyword: VERTICAL LOCATION > TROPOSPHERE
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: PHILIP B. RUSSELL
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Ames Research Center
Address: MS 245-5
City: Moffett Field
State_or_Province: CA
Postal_Code: 94035
Country: USA
Contact_Voice_Telephone: (415) 604-5404
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
Back to Top
Spatial_Reference_Information:
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NASA/ARC/ESD/ESPO > Earth Science Project Office, Earth Sciences Division, Ames Research Center, NASA
Contact_Person: STEVEN GAINES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Resource_Description: STEP87
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.espo.nasa.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://cloud1.arc.nasa.gov/step/index.html
Access_Instructions:
The Stratospheric-Troposphere Exchange Project (STEP) home page.
Fees: Not Available
Back to Top
Metadata_Reference_Information:
Metadata_Date: 19950630
Metadata_Review_Date: 20110126
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SCOTT A. RITZ
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Goddard Space Flight Center
Address: Global Change Master Directory
City: Greenbelt
State_or_Province: Maryland
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5126
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: Scott.A.Ritz@nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Back to Top

  [  Return to Record   ]

Link to NASA website
Responsible NASA Official:   Lola Olsen
Webmaster:   Monica Holland   ·  Contact GCMD User Support for assistance