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Will the Wet Get Wetter and the Dry Drier?

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Keith Dixon
Publication_Date: Unknown
Title: Will the Wet Get Wetter and the Dry Drier?
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher: NOAA/GFDL
Other_Citation_Details:
Online_Linkage: http://www.gfdl.noaa.gov/will-the-wet-get-wetter-and-the-dry-drier
Description:
Abstract:
This animation depicts the time evolution of five-year averages of annual precipitation as simulated in the GFDL CM2.1 model for the period 2000 to 2100. Rather than mapping rainfall amounts in units of inches or millimeters, we have chosen to bin the values at each model grid point into five categories (indicated by the five colors in the color bar at the bottom of the plot). The categories were calculated as follows. After computing five year running averages of annual precipitation for each GFDL CM2.1 model grid point, the 1901-2000 period was analyzed. For each model grid point the maximum and minimum values for the 20th century were noted. Also, at each grid point, the individual 20th century five year rainfall values were ranked in order from driest to wettest, and then divided into three groups. Rainfall amounts falling in the driest third are designated below nomal (light tan), the wettest third are categorized as above normal (pale blue-green), and the middle third as near normal (off white). By definition these three middle colors will be the only ones would appear in maps the modeled 1901 to 2000 period. After 2000, when a five year precipitation average is less than any of the one hundred five year running averages simulated for the 20th century, that point and time is classified as drier than the 20th century (saddle brown). Similarly, when a five year rainfall value is greater than any simulated for that grid point during 1901-2000 period, it is labelled wetter than the 20th century (darker blue-green). These animations were produced using the output of the CM2.1 "H2" historical experiment for the 1901-2000 time period and the CM2.1 SRES A1B run for the 2001-2100 period. credit: NOAA/GFDL
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Delworth, et al., (2006): GFDL's CM2 global coupled climate models - Part 1: Formulation and simulation characteristics, Journal of Climate, Vol. 19, No. 5, pages 643-674.
Supplemental_Information:
REFERENCE: IPCC (Intergovernmental Panel on Climate Change) (2000): Special Report on Emission Scenarios. Cambridge University Press, U.K. (http://www.grida.no/climate/ipcc/emission/)
Supplemental_Information:
REFERENCE: IPCC ... (Intergovernmental Panel on Climate Change) (2007): Climate Change 2007: The Physical Science Basis, Summary for Policymakers. (published online 2 Feb 2007 at http://www.ipcc.ch/)
Supplemental_Information:
REFERENCE: Knutson, et al., (2006): Assessment of Twentieth Century Regional Surface Temperature Trends using the GFDL CM2 Coupled Models, Journal of Climate, Vol. 19, No. 9, pages 1624-1651.
Supplemental_Information:
REFERENCE: Held, et al., (2005): Simulation of Sahel drought in the 20th and 21st centuries. Proceedings of the National Academy of Sciences, Vol. 102, No. 50, page 17891-17896.
Supplemental_Information:
REFERENCE: Held and Soden, (2006): Robust responses of the hydrological cycle to global warming, Journal of Climate, Vo. 19, No. 21, pages 5686-5699
Supplemental_Information:
REFERENCE: Lau, et al. (2006): Attribution of Atmospheric Variations in the 1997-2003 Period to SST Anomalies in the Pacific and Indian Ocean Basins, of Climate, Vol. 19, No. 15, pages 3607-3628.
Supplemental_Information:
REFERENCE: Lu, et al. (2007): Expansion of the Hadley Cell under global warming, Geophys. Res. Lett,. Vol. 34, L06805, doi:10.1029/2006GL028443.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19010101
Ending_Date: 21001231
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 > PRECIPITATION
Theme_Keyword: Climate Diagnostics
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Access_Constraints: Not Available
Use_Constraints:
Not Available
Browse_Graphic:
Browse_Graphic_File_Name: http://www.gfdl.noaa.gov/pix/user_images/kd/highlights/glob_precipch_whbk_1920x1080.png
Browse_Graphic_File_Description:
Browse_Graphic_File_Type: MOV
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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: DOC/NOAA/GFDL > NOAA Geophysical Fluid Dynamics Laboratory, U.S. Department of Commerce
Contact_Person: KEITH DIXON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NOAA / GFDL
City: 201 Forrestal Road Princeton
State_or_Province: NJ
Postal_Code: 08540-6649
Country: USA
Contact_Voice_Telephone: 609-452-6574
Contact_Facsimile_Telephone: 609-987-5063
Contact_Electronic_Mail_Address: Keith.Dixon@noaa.gov
Resource_Description: GFDL_CM2_1_PrecipitationModel1901-2100
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://www.gfdl.noaa.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.gfdl.noaa.gov/cms-filesystem-action/use...
Access_Instructions:
2 page research summary
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20100927
Metadata_Review_Date: 20100927
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.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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