Pre-LBA Rondonia Boundary Layer Experiment (RBLE) Data

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: CALVET, J.C.COSTA, A.C.L.CULF, A.D.DA ROCHA, H.R.FISCH, G.LYRA, R.F.NOBRE, C.A.ROCHA, E.SOUZA, S.S.UBARANA, V.N.WRIGHT, I.R.
Publication_Date: 2009
Title: Pre-LBA Rondonia Boundary Layer Experiment (RBLE) Data
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=917&term2attribute=fileID
Description:
Abstract:
The atmospheric boundary layer (ABL) is the layer of air closest to the ground which is directly influenced on a daily basis by the heating and cooling of the earth's surface. The exact depth of the ABL varies according synoptic weather conditions and the time of day. During the daytime it is usually between 1 and 3 km; during the night it is much shallower. The ABL is important because it links the fluxes of heat and water vapor observed at the surface to the general circulation of the atmosphere. To model climate correctly, it is necessary for the ABL to be well understood and represented in the model. Because the air in the ABL is turbulent, small scale variations (about 1 km or less) in evaporation and heat flux at the surface are smoothed, with the temperature, humidity and depth of the ABL being uniform over the entire area. Larger scale variations (on the scale of 10 km or more) may lead to differences in ABL properties between the different surface types. Such differences may cause local atmospheric circulations to develop which may be important for the local climate of an area. During ABRACOS, three ABL measurement campaigns were carried out. These campaigns were called the Rondonia Boundary Layer Experiment (RBLE) 1, 2 and 3 and were held at Ji-Parana where the scale of the forested and deforested areas is large enough for each surface type to develop its own ABL. Refer to the related data set, Pre-LBA Anglo-Brazilian Amazonian Climate Observation Study (ABRACOS) Data, for additional information. The processed, quality controlled and integrated data in the documented Pre-LBA Data sets were originally published as a set of three CD_ROMs (Marengo and Victoria, 1998) but are now archived individually. The campaigns were held during the dry season when the difference in evaporation between the two surfaces types, forest and pasture, is at its greatest. Measurements were made with both free-flying radiosondes which measure temperature, humidity, and wind up to about 12 km and with a tethered balloon which makes more detailed measurements in the lowest 1 km of the atmosphere. Measurements were made at both the forest and clearing sites. Profiles of potential temperature measured during RBLE2 show that the daytime ABL was deeper over the clearing than the forest. The data have been used to test several models of ABL development. It appears that the ABL over pastures or over clearings grows more rapidly than predicted by the models, possibly because of the increased turbulence generated by the strips of forest typical of this area. The data have also been used to initialize one-dimensional climate models used in experiments to investigate the sensitivity of climate to land surface parameters, and to initialize a mesoscale model which can predict local effects on climate caused by the pattern of deforestation in this area.
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19920910
Ending_Date: 19940825
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -62.0
East_Bounding_Coordinate: -61.0
North_Bounding_Coordinate: -10.0
South_Bounding_Coordinate: -11.0
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 > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR
Theme_Keyword: RADIOSONDES
Theme_Keyword: THERMOMETERS
Theme_Keyword: BAROMETERS
Theme_Keyword: ANEMOMETERS
Theme_Keyword: HYDROMETERS
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: LBA > LARGE SCALE BIOSPHERE-ATMOSPHERE EXPERIMENT IN AMAZONIA
Theme_Keyword: Forest
Theme_Keyword: Profiles
Theme_Keyword: Rondonia
Theme_Keyword: Grassland
Theme_Keyword: Rawinsonde
Theme_Keyword: Radiosonde
Theme_Keyword: Tethered Baloon
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > SOUTH AMERICA > BRAZIL
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JEAN CHRISTOPHE CALVET
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: CNRM
Address: Meteo-France
Address: 42 Avenue G Coriolis
City: Toulouse
State_or_Province: Cedex
Postal_Code: 31057
Country: France
Contact_Voice_Telephone: 33-610-79341
Contact_Facsimile_Telephone: 33-610-79626
Contact_Electronic_Mail_Address: calvet@meteo.fr
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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
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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: 917
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
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=917...
Access_Instructions:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://daac.ornl.gov//LBA/guides/Pre_LBA_RBLE.html...
Access_Instructions:
Pre-LBA Rondonia Boundary Layer Experiment (RBLE) Data
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20090205
Metadata_Review_Date: 20130829
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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