noaa-forcing-19100 Global Holocene and Last Glacial Maximum Dust Flux Data Lambert, F.; Tagliabue, A.; Shaffer, G.; Lamy, F.; Winckler, G.; Farias, L.; Gallardo, L.; De Pol-Holz, R. Global Holocene and Last Glacial Maximum Dust Flux Data 2015-08-11 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19100 Investigator F. Lambert Investigator A. Tagliabue Investigator G. Shaffer Investigator F. Lamy Investigator G. Winckler Investigator L. Farias Investigator L. Gallardo Investigator R. De Pol-Holz earth science paleoclimate climate reconstructions age,null,null,month of year,null,climate reconstructions,null,null,N,null earth science paleoclimate climate reconstructions longitude,null,null,degree east,null,climate reconstructions,null,null,N,null earth science paleoclimate climate reconstructions latitude,null,null,degree north,null,climate reconstructions,null,null,N,null earth science paleoclimate climate reconstructions dust,null,null,kilogram per square meter per second,null,climate reconstructions,null,null,N,null earth science paleoclimate climate forcing other geoscientificInformation 21000 cal yr BP 0 cal yr BP Complete -90 90 -180 180 Geographic Region Global Global>LATITUDE >LONGITUDE None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Fabrice Lambert, Alessandro Tagliabue, Gary Shaffer, Frank Lamy, Gisela Winckler, Laura Farias, Laura Gallardo, and Ricardo De Pol-Holz 2015 Geophysical Research Letters 42 14 6014-6023 10.1002/2015GL064250 http://onlinelibrary.wiley.com/doi/10.1002/2015GL064250/abstract

Mineral dust aerosols play a major role in present and past climates. To date, we rely on climate models for estimates of dust fluxes to calculate the impact of airborne micronutrients on biogeochemical cycles. Here we provide a new global dust flux data set for Holocene and Last Glacial Maximum (LGM) conditions based on observational data. A comparison with dust flux simulations highlights regional differences between observations and models. By forcing a biogeochemical model with our new data set and using this model's results to guide a millennial-scale Earth System Model simulation, we calculate the impact of enhanced glacial oceanic iron deposition on the LGM-Holocene carbon cycle. On centennial timescales, the higher LGM dust deposition results in a weak reduction of <10 ppm in atmospheric CO2 due to enhanced efficiency of the biological pump. This is followed by a further ~10 ppm reduction over millennial timescales due to greater carbon burial and carbonate compensation. STUDY NOTES: Global interpolated dust fluxes for the Holocene and Last Glacial Maximum (LGM)

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/climate_forcing/lambert2015/readme-lambert2015dust.txt Data Description; Lambert et al. 2015 Readme File GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/climate_forcing/lambert2015/dustflux.nc netCDF Data File; Holocene and Last Glacial Maximum Dust Flux Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/climate_forcing/lambert2015/dustflux.nc.txt Text Data File; Holocene and Last Glacial Maximum Dust Flux Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11