GTE Transport and Atmospheric Chemistry near the Equator

GTE_TRACEA_BND:	Global Tropospheric Experiment (GTE) Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACE-A) Instituto Nacional de Pesquisas (INPE) Bandeirante (BND) Aircraft Data (GTE_TRACEA_BND)
GTE_TRACEA_DC8:	Global Tropospheric Experiment (GTE) Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACE-A) NASA Douglas DC8 Aircraft Data (GTE_TRACEA_DC8)
GTE_TRACEA_SATELLITE:	Global Tropospheric Experiment (GTE) Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACE-A) Satellite Data (GTE_TRACEA_SATELLITE)
GTE_TRACEA_SONDES:	Global Tropospheric Experiment (GTE) Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACE-A) Ozonesonde Data (GTE_TRACEA_SONDES)

Data Set Introduction:

Objective/Purpose:

Summary of Parameters:

1_Butene
1_Hexene
1_Pentene
1_Pentyne
2_Butyne
2_Carene
3_Carene
A_Pinene
A_Terpinene
Acetic Acid
Acetone
Aerosol Profile
Aerosols
B_Pinene
Barometric Altitude
Benzene
Butadiene
Carbon Dioxide
Carbon Monoxide
Carbon Tetrachloride
Chloroform
CIS_2_Butene
D_Limonene
Dew/Frost Point Temperature
Dichlorodifluoromethane
Dichlorotetrafluoroethane
Ethane
Ethanol
Ethene
Ethyne
Formaldehyde
Formic Acid
G_Terpinene
Hydrogen Peroxide
I_Butane
I_Pentane
M_Xylene
Methane
Methyl Bromide
Methyl Chloride
Methyl Chloroform
Methyl Hydroperoxide
Myrcene
N_Butane
N_Heptane
N_Hexene
N_Pentane
Nadir UV
Nitric Acid
Nitric Oxide
Nitrogen Dioxide
Nitrous Oxide
O_Xylene
Ozone
Ozone Mixing Ratio
Ozone Mixing Ratio Profiles
P_Cymene
P_Xylene
Perchloroethene
Peroxyacetyl Nitrate
Peroxypropionyl Nitrate
Position
Propane
Propene
Propyne
Static Air Temperature
Static Pressure
Surface Temperature
T_2_Butene
Terpinolene
Time
Toluene
Total 'Reactive' Nitrogen
Trichlorofluoromethane
Trichlorotrifluoroethane
Trifluorobromomethane
Zenith UV

Discussion:

Related Data Sets:

2. Investigator(s):

The Project Principal Investigator and the TRACEA Mission Scientist were responsible for the broad scientific aspects of the expedition.

Investigator(s) Name and Title:

Project Principal Investigator:
James M. Hoell, Jr.
MS 483
NASA Langley Research Center
Hampton, VA 23681 - 0001
Telephone: 757-864-5826
Fax: 757-864-5841
E-mail: j.m.hoell@larc.nasa.gov

TRACEA Mission Scientist:
Jack Fishman
MS 401A
NASA Langley Research Center
Hampton, VA 23681 - 0001
Telephone: 757 864-2720
FAX: 757 864-7790
E-mail: j.fishman@larc.nasa.gov

Title of Investigation:

Global Tropospheric Experiment (GTE) ) Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACE-A)

Contact Information:

3. Theory of Measurements:

4. Equipment:

Sensor/Instrument Description:

Collection Environment:

Source/Platform:

Source/Platform Mission Objectives:

Key Variables:

Principles of Operation:

Sensor/Instrument Measurement Geometry:

Manufacturer of Sensor/Instrument:

Calibration:

Specifications:

Tolerance:

Frequency of Calibration:

Other Calibration Information:

5. Data Acquisition Methods:

Spatial Characteristics:

Spatial Coverage:

Data Set Name	Min Lat	Max Lat	Min Lon	Max Lon
GTE_TRACEA_BND	-16.50	-10.00	-55.78	-48.03
GTE_TRACEA_DC8	-38.00	43.58	-125.95	39.56
GTE_TRACEA_SATELLITE	-40.00	10.00	-80.00	50.00
GTE_TRACEA_SONDES	-25.90	-4.28	-56.00	28.20

Spatial Coverage Map:

Spatial Resolution:

Projection:

Grid Description:

Temporal Characteristics:

Temporal Coverage:

Data Set Name	Begin Date	End Date
GTE_TRACEA_BND	09/09/1992	10/01/1992
GTE_TRACEA_DC8	08/18/1992	10/26/1992
GTE_TRACEA_SATELLITE	09/01/1992	10/31/1992
GTE_TRACEA_SONDES	03/12/1990	10/24/1992

Temporal Coverage Map:

Temporal Resolution:

Data Characteristics:

Parameter/Variable:

Not all of the parameters listed in Summary of Parameters in section 1 are in each data set granule. Also, the ranges vary between data sets and between granules within each data set.

Variable Description/Definition:

8. Data Organization:

Data Granularity:

A general description of data granularity as it applies to the IMS appears in the EOSDIS Glossary.

Data Format:

9. Data Manipulations:

Formulae:

Derivation Techniques and Algorithms:

Data Processing Sequence:

Processing Steps:

Processing Changes:

Calculations:

Special Corrections/Adjustments:

Calculated Variables:

Data Validation by Source:

Confidence Level/Accuracy Judgement:

Measurement Error for Parameters:

Additional Quality Assessments:

Data Verification by Data Center:

The Langley DAAC performs an inspection process on this data received by the data producer via ftp. The DAAC checks to see if the transfer of the data completed and were delivered in their entirety. An inspection software was developed by the DAAC to see if the code was able to read every granule. The code also checks to see if every parameter of data falls within the ranges which are included in the granule. This same code extracts the metadata required for ingesting the data into the IMS. If any discrepancies are found, the data producer is contacted. The discrepancies are corrected before the data are archived at the DAAC.

11. Notes:

Limitations of the Data:

Known Problems with the Data:

Usage Guidance:

Any Other Relevant Information about the Study:

12. Application of the Data Set:

13. Future Modifications and Plans:

14. Software:

Software Description:

Sample read software is available for these data sets. This code is written in C. A makefile and a readme file are also available to work with the code and data.

Software Access:

The software can be obtained through the Langley DAAC. Please refer to the contact information below. The software can also be obtained at the same time the user is ordering this data set.

15. Data Access:

Contact Information:

Data Center Identification:

Procedures for Obtaining Data:

Data, programs for reading the data, and user's guides can be obtained through the EOSDIS Langley DAAC on-line system which will allow users to search through the data inventory and place orders on-line. Users may also order data by letter, telephone, electronic mail (INTERNET), or personal visit.

Langley DAAC User and Data Services Office
NASA Langley Research Center
Mail Stop 157D
Hampton, Virginia 23681-2199
USA
Telephone: (757) 864-8656
FAX: (757) 864-8807
E-mail: larc@eos.nasa.gov
URL: http://eosweb.larc.nasa.gov

The Langley DAAC User and Data Services staff provides technical and operational support for users ordering data. The Langley DAAC Handbook is available in a postscript file through the IMS for users who want detailed information about the Langley DAAC holdings.

Select this text for information on the Langley Information Management System which provides an interface to order data from the Langley DAAC.

Data Center Status/Plans:

16. Output Products and Availability:

17. References:

18. Glossary of Terms:

19. List of Acronyms:

DAAC - Distributed Active Archive Center
EOSDIS - Earth Observing System Data and Information System
ftp - File Transfer Protocol
IMS - Information Management System
LaRC - Langley Research Center
NASA - National Aeronautics and Space Administration
URL - Uniform Resource Locator

EOSDIS Acronyms.

20. Document Information:

Document Revision Date:: October 31, 1996; May 29, 1997; November 24, 1997
Document Review Date:: October 31, 1996; May 28, 1997
Document ID:: ...(currently leave this blank)
Citation:: ...(currently leave this blank)
Document Curator:: Langley DAAC User and Data Services Office
Telephone: (757) 864-8656
FAX: (757) 864-8807
E-mail: larc@eos.nasa.gov
Document URL:: http://eosweb.larc.nasa.gov/GUIDE/dataset_documents/base_gte_tracea_dataset.html

Global Tropospheric Experiment (GTE) Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACEA) Langley DAAC Data Set Document

Summary:

Table of Contents: