SAFARI 2000 PHYSICAL AND CHEMICAL PROPERTIES OF AEROSOLS, DRY SEASON 2000

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: BUSECK, P.R.HOBBS, P.V.LI, J.POSFAI, M.SIMONICS, R.
Publication_Date: 2004
Title: SAFARI 2000 PHYSICAL AND CHEMICAL PROPERTIES OF AEROSOLS, DRY SEASON 2000
Edition:
Geospatial_Data_Presentation_Form: Online Files
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Oak Ridge, Tennessee, U.S.A.
Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Other_Citation_Details:
Online_Linkage: http://mercury.ornl.gov/ornldaac/send/query?term2=725&term2attribute=fileID
Description:
Abstract:
The Southern African Regional Science Initiative 2000 (SAFARI 2000) provided an opportunity to study aerosol particles produced by savanna burning. We used analytical transmission electron microscopy (TEM), including energy-dispersive X-ray spectrometry (EDS) and electron energy-loss spectroscopy (EELS), to study aerosol particles from several smoke and haze samples and from a set of cloud samples. These aerosol particle samples were collected using the University of Washington Convair CV-580 research aircraft (Posfai et al., 2003).Individual aerosol particles in smoke plumes from biomass fires and in regional hazes in southern Africa were studied using analytical transmission electron microscopy, which allowed detailed characterization of carbonaceous particle types in smoke and determination of changes in particle properties and concentrations during smoke aging. Based on composition, morphology, and microstructure, three distinct types of carbonaceous particles were present in the smoke: organic particles with inorganic (K-salt) inclusions; 'tar ball' particles; and soot. The relative number concentrations of organic particles were largest in young smoke, whereas tar balls were dominant in a slightly aged (~1 hour) smoke from a smoldering fire. Flaming fires emitted relatively more soot particles than smoldering fires, but soot was a minor constituent of all studied plumes. Further aging caused the accumulation of sulfate on organic and soot particles, as indicated by the large number of internally mixed organic/sulfate and soot/sulfate particles in the regional haze. Externally mixed ammonium sulfate particles dominated in the boundary layer hazes, whereas organic/sulfate particles were the most abundant type in the upper hazes. Apparently, elevated haze layers were more strongly affected by biomass smoke than those within the boundary layer. Based on size distributions and the observed patterns of internal mixing, we hypothesize that organic and soot particles are the cloud-nucleating constituents of biomass smoke aerosols. Sea-salt particles dominated in the samples taken in stratus clouds over the Atlantic Ocean, off the coast of Namibia, whereas a distinct haze layer above the clouds consisted of aged biomass smoke particles.
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000817
Ending_Date: 20000913
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 5.0
East_Bounding_Coordinate: 60.0
North_Bounding_Coordinate: 5.0
South_Bounding_Coordinate: -35.0
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_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES
Theme_Keyword: CONVAIR CV-580
Theme_Keyword: MICROSCOPES
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: SAFARI 2000 > THE SOUTHERN AFRICAN REGIONAL SCIENCE INITIATIVE PROJECT
Theme_Keyword: CWIC > CEOS WGISS INTEGRATED CATALOG
Theme_Keyword: Haze
Theme_Keyword: Soot
Theme_Keyword: Eosdis
Theme_Keyword: Aerosols
Theme_Keyword: Sulfates
Theme_Keyword: Tar Balls
Theme_Keyword: Aged Smoke
Theme_Keyword: Safari 2000
Theme_Keyword: Young Smoke
Theme_Keyword: Smoke Plumes
Theme_Keyword: Black Carbon
Theme_Keyword: Atomic Carbon
Theme_Keyword: Atomic Sulfur
Theme_Keyword: Flaming Fires
Theme_Keyword: Atomic Oxygen
Theme_Keyword: Savanna Fires
Theme_Keyword: Biomass Smoke
Theme_Keyword: Atomic Silicon
Theme_Keyword: Organic Carbon
Theme_Keyword: Particle Number
Theme_Keyword: Cv-580 Aircraft
Theme_Keyword: Savanna Burning
Theme_Keyword: Atomic Chlorine
Theme_Keyword: Biomass Burning
Theme_Keyword: Elemental Carbon
Theme_Keyword: Atmospheric Data
Theme_Keyword: Smoldering Fires
Theme_Keyword: Ammonium Sulfate
Theme_Keyword: Atomic Potassium
Theme_Keyword: Organic Particles
Theme_Keyword: Aerosol Particles
Theme_Keyword: Aerosol Morphology
Theme_Keyword: Aerosol Composition,
Theme_Keyword: Particulate Emissions
Theme_Keyword: Carbonaceous Aerosols
Theme_Keyword: Carbonaceous Particles
Theme_Keyword: Aerosol Microstructure
Theme_Keyword: Particle Size Distributions
Theme_Keyword: Particle Element Compositions
Theme_Keyword: Transmission Electron Microscopy (tem)
Theme_Keyword: Electron Energy-loss Spectroscopy (eels)
Theme_Keyword: Energy-dispersive X-ray Spectrometry (eds)
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENVIRONMENT
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > AFRICA > SOUTHERN AFRICA > SOUTH AFRICA
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: P. R. BUSECK
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
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Logical_Consistency_Report:
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Completeness_Report:
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Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ORNL_DAAC > THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)
Contact_Person: ORNL DAAC USER SERVICES OFFICE
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: ORNL DAAC User Services Office
Address: Oak Ridge National Laboratory
City: Oak Ridge
State_or_Province: TN
Postal_Code: 37831-6407
Country: USA
Contact_Voice_Telephone: (865) 574-7447
Contact_Electronic_Mail_Address: uso@daac.ornl.gov
Resource_Description: 725
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://daac.ornl.gov/
Access_Instructions:
DATA CENTER URL
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Online_Option:
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http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=725...
Access_Instructions:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://daac.ornl.gov//S2K/guides/aerosol_propertie...
Access_Instructions:
SAFARI 2000 PHYSICAL AND CHEMICAL PROPERTIES OF AEROSOLS, DRY SEASON 2000
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20040913
Metadata_Review_Date: 20100908
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ORNL DAAC USER SERVICES OFFICE
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: ORNL DAAC User Services Office
Address: Oak Ridge National Laboratory
City: Oak Ridge
State_or_Province: TN
Postal_Code: 37831-6407
Country: USA
Contact_Voice_Telephone: (865) 574-7447
Contact_Electronic_Mail_Address: uso@daac.ornl.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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