Interannual Variability in Global Soil Respiration on a 0.5 Degree Grid Cell Basis (1980-1994)

Federal Geographic Data Committee (FGDC) Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: James W. Raich, Christopher S. Potter, Dwipen Bhagawati

Publication_Date: August 2003

Title: Interannual Variability in Global Soil Respiration on a 0.5 Degree Grid Cell Basis (1980-1994)

Edition:

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name: Numerical Data Package

Issue_Identification: NDP-081

Publication_Information:

Publication_Place: Oak Ridge, TN

Publisher: Carbon Dioxide Information Analysis Center

Other_Citation_Details:

Online_Linkage: http://cdiac.esd.ornl.gov/epubs/ndp/ndp081/ndp081.html

Description:

Abstract:

[Summary adopted from NDP-081 documentation] We used a climate-driven regression model to develop spatially resolved estimates of soil-CO2 emissions from the terrestrial land surface for each month from January 1980 to December 1994, to evaluate the effects of interannual variations in climate on global soil-to-atmosphere CO2 fluxes. The mean annual global soil-CO2 flux over this 15-y period was estimated to be 80.4 (range 79.3-81.8) Pg C. Monthly variations in global soil-CO2 emissions followed closely the mean temperature cycle of the Northern Hemisphere. Globally, soil-CO2 emissions reached their minima in February and peaked in July and August. Tropical and subtropical evergreen broad-leaved forests contributed more soil-derived CO2 to the atmosphere than did any other vegetation type (~30% of the total) and exhibited a biannual cycle in their emissions. Soil-CO2 emissions in other biomes exhibited a single annual cycle that paralleled the seasonal temperature cycle. Interannual variability in estimated global soil-CO2 production is substantially less than is variability in net carbon uptake by plants (i.e., net primary productivity). Thus, soils appear to buffer atmospheric CO2 concentrations against far more dramatic seasonal and interannual differences in plant growth. Within seasonally dry biomes (savannas, bushlands, and deserts), interannual variability in soil-CO2 emmissions correlated significantly with interannual differences in precipitation. At the global scale, however, annual soil-CO2 fluxes correlated with mean annual temperature, with a slope of 3.3 PgCY-1 per degree Celsius. Although the distribution of precipitation influences seasonal and spatial patterns of soil-CO2 emissions, global warming is likely to stimulate CO2 emissions from soils. The authors estimated the seasonal and spatial distribution of global soil-CO2 emissions following the regression based modeling approach of Raich and Potter (1995). This database, therefore, contains global, spatially explicit (0.5-degree grid cells) and temporally explicit model output of soil-CO2 emissions. The calculated emissions include the respiration of both soil organisms and plant roots. Please note that NDP-081 is an update to DB1015 ("http://cdiac.ornl.gov/ftp/db1015/"). Specifically, DB1015 used long-term climate data as model input while NDP-081 utilizes new climate and land cover data files. Please refer to Raich et al. 2002, (provided with permission from Blackwell Science Ltd.) for more information ("http://cdiac.esd.ornl.gov/epubs/ndp/ndp081/GCB2002.pdf")

Purpose:

Not Available

Supplemental_Information:

REFERENCE: DeFries, R.S, M. Hansen, J.R.G. Townshend, and R. Sohlberg. 1998. Global land cover classifications at 8 km spatial resolution: the use of training data derived from landsat imagery in decision tree classifiers. International Journal of Remote Sensing 19:3141-3168. Raich, J.W. and C.S. Potter and D. Bhagawati. 2002. Interannual variability in global soil respiration, 1980-1994. Global Change Biology 8:800-812. "http://cdiac.esd.ornl.gov/epubs/ndp/ndp081/GCB2002.pdf" Raich, J. W. and C. S. Potter. 1995. Global patterns of carbon dioxide emissions from soils. Global Biogeochemical Cycles 9(1)23-36. Raich, J.W. and C.S. Potter. 1995. Global patterns of carbon dioxide emissions from soils on a 0.5 degree grid cell basis. DB1015. Carbon Dioxide Information Analysis Center, U.S. Department of Energy, Oak Ridge National Laboratory, Oak Ridge, TN, U.S.A. "http://cdiac.ornl.gov/ftp/db1015/"

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19800101

Ending_Date: 19941231

Currentness_Reference:Unknown

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -180.0

East_Bounding_Coordinate: 180.0

North_Bounding_Coordinate: 90.0

South_Bounding_Coordinate: -90.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > EVAPOTRANSPIRATION > POTENTIAL EVAPOTRANSPIRATION

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT

Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > LAND TEMPERATURE > LAND SURFACE TEMPERATURE

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > NITROGEN

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > ORGANIC MATTER > ORGANIC CARBON

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL CHEMISTRY > CARBON DIOXIDE EMISSIONS

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL RESPIRATION

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > CARBON DIOXIDE

Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > BIOGEOCHEMICAL CYCLES

Theme_Keyword: Carbon Dioxide Flux

Theme_Keyword: Cdiac

Theme_Keyword: Db1015

Theme_Keyword: Organic Carbon

Theme_Keyword: Potential Evapotranspiration

Theme_Keyword: Soil Co2 Emissions

Theme_Keyword: Soil Emission

Theme_Keyword: Carbon Cycle

Theme_Keyword: Tems

Theme_Keyword: Gtos

Theme_Keyword: G3os

Theme_Keyword: BIOTA

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: GEOSCIENTIFIC INFORMATION

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: GEOGRAPHIC REGION > GLOBAL

Temporal:

Temporal_Keyword_Thesaurus: GCMD

Temporal_Keyword: Daily, Monthly, Annual

Access_Constraints: Not Available

Use_Constraints:

Not Available

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: CHRISTOPHER S. POTTER

Contact_Person_Primary:

Contact_Person: JAMES W. RAICH

Contact_Person_Primary:

Contact_Person: DWIPEN BHAGAWATI

Contact_Position: INVESTIGATOR

Contact_Position: INVESTIGATOR

Contact_Position: INVESTIGATOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: NASA Ames Research Center

Address: Ecosystem Science and Technology Program

Address: Mail Stop 242-4

City: Moffett Field

State_or_Province: CA

Postal_Code: 94035

Country: USA

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Department of Botany

Address: Iowa State University

City: Ames

State_or_Province: IA

Postal_Code: 50011

Country: USA

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Department of Civil and Construction Engineering

Address: Iowa State University

City: Ames

State_or_Province: IA

Postal_Code: 50011

Country: USA

Contact_Voice_Telephone: 650-604-6164

Contact_Facsimile_Telephone: 650-604-4680

Contact_Electronic_Mail_Address: Christopher.S.Potter@nasa.gov

Contact_Electronic_Mail_Address: jraich@iastate.edu

Browse_Graphic:

Browse_Graphic_File_Name: http://cdiac.esd.ornl.gov/epubs/ndp/ndp081/map_yrmn.gif

Browse_Graphic_File_Description:

Mean Annual Global Soil CO2 Emissions (1980-1994)

Browse_Graphic_File_Type: GIF

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

QA performed by CDIAC One of the roles of the Carbon Dioxide Information Analysis Center (CDIAC) is quality assurance (QA) of data. The QA process is an important component of the value-added concept of assuring accurate, usable information for researchers, because data received by CDIAC are rarely in condition for immediate distribution, regardless of source.

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:

Not Available

Process_Date: Unknown

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.5 degree

Longitude_Resolution: 0.5 degree

Geographic_Coordinate_Units: Decimal degrees

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: DOE/ORNL/ESD/CDIAC > Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, U. S. Department of Energy

Contact_Person: CARBON DIOXIDE INFORMATION ANALYSIS CENTER

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Carbon Dioxide Information Analysis Center (CDIAC)

Address: Oak Ridge National Laboratory

Address: P.O.. Box 2008

City: OAK RIDGE

State_or_Province: TENNESSEE

Postal_Code: 37831-6335

Country: USA

Contact_Facsimile_Telephone: (865) 574-2232

Resource_Description: NDP-081

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: netCDF, ARC/INFO, GIF,

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://cdiac.ornl.gov/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://cdiac.esd.ornl.gov/epubs/ndp/ndp081/ndp081....

Access_Instructions:

Access to the NDP-081 data and documentation

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://cdiac.ornl.gov/ftp/db1015/

Access_Instructions:

FTP directory of DB1015 data files and documentation

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20030910

Metadata_Review_Date: 20090420

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GENE R. MAJOR

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Electronic_Mail_Address: gsfc-gcmduso@mail.nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time