NOAA/WDS Paleoclimatology - Model Simulations of Orbital Sensitivity of North American Ice Sheets

browse graphicPaleoclimatology - Modeling
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoclimatology Modeling. The data include parameters of paleoclimatic modeling with a geographic location of Global. The time period coverage is from 200000 to 0 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
  • Cite as: Pollard, D.; DeConto, R.M. (2012-10-24): NOAA/WDS Paleoclimatology - Model Simulations of Orbital Sensitivity of North American Ice Sheets. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/13440. Accessed [date].
  • Please refer to Credit tab for full citation information.
  • noaa-model-13440
  • NCEI DSI 1200_01
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Distributor Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Dataset Point of Contact Bauer, Bruce
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 303-497-6280
paleo@noaa.gov
Coverage Description Date Range: 200000 cal yr BP to 0 cal yr BP;
Time Period -198050 to 1950
Spatial Bounding Box Coordinates
N: 90
S: -90
E: 180
W: -180
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2012-10-24
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Data update frequency not available
Supplemental Information
STUDY NOTES: Snapshots of a 3-D ice sheet model (Pollard and DeConto, 2012) applied over North America and Greenland, driven either by simply parameterized climate (similarly to Pollard and DeConto, 2009), or by a look-up table of previous Global Climate Model (GCM) solutions (similarly to DeConto and Pollard, 2003), with idealized 40,000-yr sinusoidal climate variations. Main model variables of interest are: h = ice sheet thickness (m) hs = surface elevation (m) hb = bedrock elevation (m) maskwater = 0 for land or grounded ice, 1 for ocean or floating ice. Latitudes of grid points: Every 0.5 degrees, from 20.5 N to 84.5 N (130 points). Longitudes of grid points: Every 1.0 degrees, from 179.5 W to -10.5 W (170 points). Time period: Model integrations of up to 200,000 years, representing idealized orbital forcing with 40,000 year periodicity. Variables are saved every 2000 years, from 0 up to 200000 yr (up to 101 saves). Each NetCDF file contains results for one model experiment, named as follows: fort.92_cyca to fort.92_cych.nc: Using parameterized climate forcing, each with slightly different climate parameters. fort.92_gcmcyc1.nc to fort.92_gcmcyc5.nc: Using GCM lookup-table forcing, each with slightly different look-up parameters, mainly albedo feedback strength. ADDITIONAL REFERENCE: DeConto, R.M. and D. Pollard. 2003. Rapid Cenozoic glaciation of Antarctica induced by declining atmospheric CO2. Nature, 421, 245-249. ADDITIONAL REFERENCE: Pollard, D. and R.M. DeConto. 2009. Modelling West Antarctic ice sheet growth and collapse through the past five million years. Nature, 458, 329-332
ABSTRACT SUPPLIED BY ORIGINATOR: The formulation of a 3-D ice sheet-shelf model is described. The model is designed for long-term continental-scale applications, and has been used mostly in paleoclimatic studies. It uses a hybrid combination of the scaled shallow ice and shallow shelf approximations for ice flow. Floating ice shelves and grounding-line migration are included, with parameterized ice fluxes at grounding lines that allows relatively coarse resolutions to be used. All significant components and parameterizations of the model are described in some detail. Basic results for modern Antarctica are compared with observations, and simulations over the last 5 million years are compared with previously published results. The sensitivity of ice volumes during the last deglaciation to basal sliding coefficients is discussed.
Purpose Computer simulations of past climate. Variables provided as model output are described by parameter keyword. In some cases the parameter keywords are a subset of all archived model output, and additional output is available upon request. Additional summary information can be found in the abstracts of papers listed in the dataset citations.
Dataset Citation
  • Cite as: Pollard, D.; DeConto, R.M. (2012-10-24): NOAA/WDS Paleoclimatology - Model Simulations of Orbital Sensitivity of North American Ice Sheets. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/13440. Accessed [date].
  • Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
Cited Authors
  • Pollard, D.
  • DeConto, R.M.
Originators
  • Pollard, D.
  • DeConto, R.M.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > paleoclimatic modeling
  • earth science > paleoclimate > model > other model
Place keywords
  • Geographic Region > Global> Global > LATITUDE > LONGITUDE
Use Constraints
  • Cite as: Pollard, D.; DeConto, R.M. (2012-10-24): NOAA/WDS Paleoclimatology - Model Simulations of Orbital Sensitivity of North American Ice Sheets. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/13440. Accessed [date].
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
  • Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
  • None
Fees
  • In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media.
Last Modified: 2018-12-11
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