noaa-model-9969 eng; USA utf8 dataset Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2018-12-11 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Cosmogenic Radionuclides Atmospheric Transport Model Output 2010-07-08 publication noaa-model-9969 NCEI DSI 1200_01 Heikkilä, U. originator Heikkilä, U. author Beer, J. originator Beer, J. author NOAA National Centers for Environmental Information publisher tableDigital 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 245 to -53 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. 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. completed Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncdc.noaa.gov/c/images/pc-default-model.png Paleoclimatology - Modeling PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher 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 > atmosphere model theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Geographic Region > Global> Global > LATITUDE > LONGITUDE place otherRestrictions Cite as: Heikkilä, U.; Beer, J. (2010-07-08): NOAA/WDS Paleoclimatology - Cosmogenic Radionuclides Atmospheric Transport Model Output. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/9969. Accessed [date]. otherRestrictions 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. otherRestrictions 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. otherRestrictions None otherRestrictions 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. eng; USA geoscientificInformation Date Range: 1705 AD to 2003 AD; Date Range: 245 cal yr BP to -53 cal yr BP; -180 180 -90 90 1705 2003 STUDY NOTES: Model results for the atmospheric transport of cosmogenic radionuclides Be-10, Be-7, Cl-36 performed using the ECHAM5-HAM general circulation model, developed at the Max-Planck-Institute for Meteorology (http://www.mpimet.mpg.de/). Please refer to Heikkilä, U., J. Beer, and J. Feichter. 2008. Modeling cosmogenic radionuclides 10Be and 7Be during the Maunder Minimum using the ECHAM5-HAM General Circulation Model. Atmospheric Chemistry and Physics, 8, 2797-2809. doi:10.5194/acp-8-2797-2008, for a detailed description of the data. Data from the following experiments is available: 1) The simulated bomb test peak of Chlorine-36 during the years 1952-1972. See Heikkilä, U., Beer, J., Feichter, J., Alfimov, V., Synal, H.-A., Schotterer, U., Eichler, A., Schwikowski, M., and Thompson, L.: 36Cl bomb peak: comparison of modeled and measured data, Atmos. Chem. Phys., 9, 4145-4156, doi:10.5194/acp-9-4145-2009, 2009. Available files: cl36_air_conc_1952-1972_monthly.nc - monthly mean Cl-36 atmospheric concentrations (atoms/kg) at 39 model levels up to 0.01 hPa (ca. 80 km). (Note: large file, 329MB) (Note: data for March 1959 are not present in this file) cl36_flux_1952-1972_monthly.nc cl36_flux_1952-1972_annual.nc - monthly and annual mean Cl-36 atmospheric deposition fluxes (atoms/m2/s). 2) Simulated atmospheric deposition fluxes of Beryllium-10, Beryllium-7 and Lead-210 for two different periods: 1986-1990 (present day conditions) and 1705-1709 (Maunder Minimum of the Little Ice Age). See Heikkilä et al. 2008. More information on the simulation of Lead-210 can be found in Heikkilä, Ulla. Modeling of the atmospheric transport of the cosmogenic radionuclides ¹⁰Be and ⁷Be using the ECHAM5-HAM general circulation model. ETH (2007), http://e-collection.library.ethz.ch/view/eth:30179. Available files: be10_be7_pb210_flux_1986-1990_monthly.nc be10_be7_pb210_flux_1986-1990_annual.nc be10_be7_pb210_flux_1705-1709_monthly.nc be10_be7_pb210_flux_1705-1709_annual.nc - monthly and annual mean atmospheric deposition fluxes (atoms/m2/s) of Be-10, Be-7 and Pb-210 and the total precipitation rate (mm/day). 3) Simulated atmospheric deposition fluxes of Beryllium-10 and Beryllium-7 for the period of 1998-2003. (Heikkilä, U., J. Beer, and J. Feichter. 2008. Modeling cosmogenic radionuclides 10Be and 7Be during the Maunder Minimum using the ECHAM5-HAM General Circulation Model. Atmospheric Chemistry and Physics, 8, 2797-2809. doi:10.5194/acp-8-2797-2008). Available files: be10_be7_flux_1998-2003_monthly.nc be10_be7_flux_1998-2003_annual.nc - monthly and annual mean atmospheric deposition fluxes (atoms/m2/s) of Be-10 and Be-7 and the total precipitation rate (mm/day). Model output is in netCDF format (http://www.unidata.ucar.edu/software/netcdf/) ABSTRACT SUPPLIED BY ORIGINATOR: All existing 10Be records from Greenland and Antarctica show increasing concentrations during the Maunder Minimum period (MM), 1645-1715, when solar activity was very low and the climate was colder (little ice age). In detail, however, the 10Be records deviate from each other. We investigate to what extent climatic changes influence the 10Be measured in ice by modeling this period using the ECHAM5-HAM general circulation model. Production calculations show that during the MM the mean global 10Be production was higher by 32% than at present due to lower solar activity. Our modeling shows that the zonally averaged modeled 10Be deposition flux deviates by only ~8% from the average increase of 32%, indicating that climatic effects are much smaller than the production change. Due to increased stratospheric production, the 10Be content in the downward fluxes is larger during MM, leading to larger 10Be deposition fluxes in the subtropics, where stratosphere-troposphere exchange (STE) is strongest. In polar regions the effect is small. In Greenland the deposition change depends on latitude and altitude. In Antarctica the change is larger in the east than in the west. We use the 10Be/7Be ratio to study changes in STE. We find larger change between 20N-40N during spring, pointing to a stronger STE in the Northern Hemisphere during MM. In the Southern Hemisphere the change is small. These findings indicate that climate changes do influence the 10Be deposition fluxes, but not enough to significantly disturb the production signal. Climate-induced changes remain small, especially in polar regions. 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Native Format(s) https://data.nodc.noaa.gov/cgi-bin/iso?id=noaa-model-9969 HTTPS Landing Page NCEI landing page for this dataset Dataset landing page with general information and links to access the data. information https://www.ncdc.noaa.gov/paleo/study/9969 HTTPS Web Browser NCEI Study Page Study page with dataset access information. search https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoclimatology-modeling HTTPS Information NCEI Paleoclimatology Modeling Page General information for this data type. information https://www1.ncdc.noaa.gov/pub/data/paleo/gcmoutput/heikkila2010/ HTTPS Download /gcmoutput/heikkila2010/ Data Folder download asNeeded This metadata record was translated from DIF using dif-9x-to-iso-19115-2.xsl Version: 2018-10-25