NSIDC-0281 Atmospheric Nitrate Isotopic Analysis at Amundsen-Scott South Pole Station, A Twenty-Five Year Record Mark H. Thiemens Atmospheric Nitrate Isotopic Analysis at Amundsen-Scott South Pole Station, A Twenty-Five Year Record 2006-11-01 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0281.html http://dx.doi.org/10.7265/N5TT4NWF Investigator Mark H. Thiemens

University of California, San Diego

Department of Chemistry and Biochemistry

9500 Gilman Dr., MC 0356

La Jolla CA 92093-0356 USA Investigator Joel Savarino

Laboratory of Glaciology and Geophysical Environment

54 rue Moliere, BP 96

St. Martin d Heres 38402 France Technical Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 x 1 303 492-2468 x

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA EARTH SCIENCE Atmosphere Aerosols Nitrate Particles EARTH SCIENCE Atmosphere Aerosols Nitrate Particles EARTH SCIENCE Atmosphere Aerosols Nitrate Particles EARTH SCIENCE Atmosphere Atmospheric Chemistry Nitrogen Compounds EARTH SCIENCE Atmosphere Atmospheric Chemistry Nitrogen Compounds EARTH SCIENCE Atmosphere Atmospheric Chemistry Nitrogen Compounds EARTH SCIENCE Atmosphere Atmospheric Chemistry Oxygen Compounds Oxygen Isotopes EARTH SCIENCE Atmosphere Atmospheric Chemistry Oxygen Compounds Oxygen Isotopes EARTH SCIENCE Atmosphere Atmospheric Chemistry Oxygen Compounds Oxygen Isotopes EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Ammonium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Ammonium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Ammonium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Calcium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Calcium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Calcium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Chlorine EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Chlorine EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Chlorine EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Magnesium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Magnesium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Magnesium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Methanesulphonic Acid (MSA) EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Methanesulphonic Acid (MSA) EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Methanesulphonic Acid (MSA) EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Nitrate EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Nitrate EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Nitrate EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Potassium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Potassium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Potassium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Sodium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Sodium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Sodium EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Sulfate EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Sulfate EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry Sulfate EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Ammonium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Ammonium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Ammonium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Calcium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Calcium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Calcium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Chlorine EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Chlorine EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Chlorine EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Magnesium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Magnesium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Magnesium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Methanesulphonic Acid (MSA) EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Methanesulphonic Acid (MSA) EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Methanesulphonic Acid (MSA) EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Nitrate EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Nitrate EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Nitrate EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Potassium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Potassium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Potassium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Sodium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Sodium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Sodium EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Sulfate EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Sulfate EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry Sulfate Climatology/Meteorology/Atmosphere Admundsen-Scott Station Aerosols AGDC Antarctica Ion Chemistry Nitrate Oxygen Isotopes Polar Snow Snow Pit South Pole MASS SPECTROMETERS GROUND-BASED OBSERVATIONS GROUND STATIONS 2003-12-01 2004-12-31 1979 2004 complete -89.9975 -89.9975 139.2728 139.2728 6 meters CONTINENT ANTARCTICA AMUNDSEN-SCOTT STATION 7 days 1 mon 6 meters 25 years English NSIDC_AGDC NSIDC National Snow and Ice Data Center http://nsidc.org Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA NSIDC_AGDC NSIDC Antarctic Glaciological Data Center http://nsidc.org/agdc/ Data Center Contact NSIDC AGDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA NSIDC_USADCC NSIDC U.S. Antarctic Data Coordination Center http://nsidc.org/usadcc/ Data Center Contact NSIDC USADCC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA FTP 76.5 KB Microsoft Excel McCabe, J. R., J. Savarino, and M. H. Thiemens. 2005. Isotopic analysis of nitrate in South Pole snow and air. Eos. Trans. AGU 86(52). Fall Meeting Suppl., Abstract A13F-04.

This data set contains snow pit measurements of oxygen isotopes, ¹⁷O and ¹⁸O, in nitrate and ion concentrations, and surface measurements of oxygen isotopes in nitrate and in nitrate aerosols from the Amundsen-Scott South Pole Station, Antarctica. The 6-meter snow pit provides investigators with a 25-year record of nitrate isotope variations and ion concentrations for a period spanning from 1979 to 2004. Monthly surface snow and weekly aerosol collections yield a year-long record of nitrate isotopic composition starting 01 December 2003 and ending 31 December 2004. Little is known about the past denitrification of the stratosphere in high latitude regions. Such knowledge is important to understanding the chemical state of the ancient atmospheres and evaluating the present climate models. With this research, investigators aim to understand the denitrification of the Antarctic stratosphere and quantify the sources of nitrate aerosols over time. Data are in Microsoft Excel format and are available via FTP.

VIEW RELATED INFORMATION http://nsidc.org/data/nsidc-0086.html South Pole Snow Pit, 1988 and 1989 VIEW RELATED INFORMATION http://nsidc.org/data/nsidc-0215.html Sulfate-Based Volcanic Record from South Pole Ice Core AMD/US CEOS IDN DIF 9.7 2006-11-01 2013-03-18 Added DOI