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1. CLPX-Ground: ISA Main Meteorological Data [NSIDC-0172]
This data set contains meteorological observations at ten sites throughout the Small Regional Study Area (SRSA) of the Cold Land Processes Field Experiment (CLPX) in Fraser, Colorado, USA. Nine identical ...


2. CLPX-Ground: Micrometeorological Measurements Over Snow, Ground-Based [NSIDC-0163]
This data set presents micrometeorological data from the Flux over Snow Surfaces (FLOSS) project carried out during the Cold Land Processes Field Experiment (CLPX) at North Park, Colorado, USA. The ...


3. CLPX-Ground: Micrometeorological Measurements Over Snow, Tower Mounted [NSIDC-0162]
This data set presents micrometeorological data from the Flux over Snow Surfaces (FLOSS) project carried out during the Cold Land Processes Field Experiment (CLPX) at North Park, Colorado, USA. The ...


4. Carbon-Isotopic Composition of Atmospheric CO2 since the Last Glacial Maximum [NSIDC-0108]
These data describe the concentration and carbon-isotopic composition (d13CO2) of atmospheric CO2 from air trapped in ice between 27,000 and 1,300 years before present from Taylor Dome, Antarctica. ...


5. Concentration and Isotopic Composition of O2 and N2 in Trapped Gases of the Vostok Ice Core [NSIDC-0107]
These data describe the d18O of O2, d15N of N2, d18Oatm, and O2/N2 ratios of trapped gases in the Vostok ice core from East Antarctica. The investigator used a mass spectrometer to measure gas concentrations ...


6. Atmospheric Boundary Layer Experiment (ABLE) Data [GTE_ABLE_Data]   PARENT DIF
The Atmospheric Boundary Layer Experiments (ABLE) were conducted over ecosystems known to have significant influence on the troposphere. The ABLE missions were designed specifically to study the rate ...


7. Chemical Instrumentation Test and Evaluation (CITE) Data [GTE_CITE_Data]   PARENT DIF
The Chemical Instrumentation Test and Evaluation (CITE-1, -2 and ?3) campaigns were initiated to evaluate the ability to measure critical tropospheric species. - CITE 1 focused on the evaluation ...


8. Pacific Exploratory Missions (PEM) Tropics Data [GTE_PEM-Tropics_Data]   PARENT DIF
The Pacific Exploratory Missions (PEM) investigated the long range transport of natural and anthropogenic emissions on the global troposphere. The PEM-Tropics A atmospheric science expedition was ...


9. Pacific Exploratory Missions (PEM) West Data [GTE_PEM-West_Data]   PARENT DIF
The Pacific Exploratory Missions (PEM) investigated the long range transport of natural and anthropogenic emissions on the global troposphere. The GTE PEM-West A atmospheric science expedition was ...


10. TRAnsport and Chemical Evolution over the Atlantic (TRACE-A) Data [GTE_TRACE-A_Data]   PARENT DIF
The objectives of the Transport and Chemistry Experiment in the Atlantic (TRACE-A), conducted over Eastern Brazil, the South Atlantic Ocean and South Africa during September and October 1992, were ...


11. TRAnsport and Chemical Evolution over the Pacific (TRACE-P) Data [GTE_TRACE-P_Data]   PARENT DIF
The objectives of the Transport and Chemistry Experiment in the Pacific (TRACE-P), conducted in March/April 2001, were 1) determine the chemical composition of the Asian outflow over the western Pacific ...


12. Biogenic Sulfur in the Siple Dome Ice Core [NSIDC-0201]
This data set is a continuous, high-resolution record of biogenic sulfur (methanesulfonate, known as MSA and CH3SO3-) in the 1000 m deep Siple Dome A (SDMA) core, covering 100,000 to 20 years BP. ...


13. Measurements of Air and Snow Photochemical Species at WAIS Divide, Antarctica [NSIDC-0585]
This data set contains atmospheric mixing ratios of nitric oxide, ozone, hydrogen peroxide, methylhydroperoxide, and concentrations in surface snow and in snow pits of nitrate, nitrite, and hydrogen ...


14. Analysis of Siple Dome Ice Core: Carbonyl Sulfide (COS), Methyl Chloride (CH3Cl), and Methyl Bromide (CH3Br) [NSIDC-0279]
This data set is part of the WAISCORES (West Antarctic Ice Sheet cores) project, research funded by the National Science Foundation (NSF) and designed to improve understanding of how the West Antarctic ...


15. Atmospheric Nitrate Isotopic Analysis at Amundsen-Scott South Pole Station, A Twenty-Five Year Record [NSIDC-0281]
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 ...


16. Firn Air Inert Gas and Oxygen Observations from Siple Dome, 1996, and the South Pole, 2001 [NSIDC-0290]
This data set includes gas ratios in polar firn air: O2/N2, 15N/14N, 40Ar/N2, 40Ar/36Ar, 40Ar/38Ar, ...


17. Antarctic Ice Cores: Methyl Chloride and Methyl Bromide [NSIDC-0313]
This data set is an analysis of methyl chloride (CH3Cl) and methyl bromide (CH3Br) in Antarctic ice core samples. Investigators reported mixing ratios of methyl chloride gas extracted from samples ...


18. Carbon-13 Isotopic Composition of Atmospheric Methane in Firn Air, South Pole and Siple Dome, Antarctica [NSIDC-0310]
This data set includes records of the delta carbon-13 (δ13C) of methane (CH4) in firn air from the South Pole and trapped in bubbles in a short ice core from Siple Dome, ...


19. Cosmogenic Radionuclides in the Siple Dome A Ice Core [NSIDC-0307]   CHILD DIFs
This data set includes a record of cosmogenic radionuclide concentrations in the Siple Dome A ice core collected as part of the West Antarctic ice core program. The investigators measured profiles ...


20. Gases in Firn Air and Shallow Ice at the WAIS Drilling Site, Antarctica [NSIDC-0412]
This data set contains trace gas measurements of air extracted from ice core samples from the West Antarctic Ice Sheet Divide A core (WAIS-D 05A). The WAIS A core was dry-drilled at the WAIS site ...


21. Methane Isotopes from the WAIS Divide Ice Core [NSIDC-0435]
This data set includes methane (CH4) isotope data from the West Antarctic Ice Sheet (WAIS) Divide ice core, WDC05A, in Antarctica. The data include depth, gas age, and the isotopic composition of ...


22. Nitrogen and Oxygen Gas Isotopes in the Siple Dome and Byrd Ice Cores, Antarctica [NSIDC-0407]
This data set consists of Gas-isotopic data from the Siple Dome and and Greenland Ice Sheet Project 2 (GISP2) ice cores covering roughly the last 100,000 years (100 ka), consisting of d15N (15N/14N) ...


23. SMEX04 Meteorological Network Data: Arizona [NSIDC-0401]
Notice to Data Users: The documentation for this data set was provided solely by the Principal Investigator(s) and was not further developed, thoroughly reviewed, or edited by NSIDC. Thus, support ...


24. SMEX05 Meteorological Network Data: Iowa [NSIDC-0455]
Notice to Data Users: The documentation for this data set was provided solely by the Principal Investigator(s) and was not further developed, thoroughly reviewed, or edited by NSIDC. Thus, support ...


25. Stable Isotopes of Ice on the Surface of Taylor Glacier, Antarctica [NSIDC-0323]
This data set contains Oxygen and Deuterium isotope ratios for approximately 980 sites on the surface of the ablation zone of Taylor Glacier, Antarctica. The data set gives latitude and longitude ...


26. Trapped Gas Composition and Chronology of the Vostok Ice Core [NSIDC-0311]
This data set includes a time scale for the Vostok ice core, retrieved from Vostok Station on the East Antarctic Plateau. This chronology is derived by orbitally tuning to molecular oxygen to nitrogen ...


27. US ITASE Stable Isotope Data, Antarctica [NSIDC-0425]
This data set includes stable isotope measurements from snow pits, firn, and ice cores collected by the the US component of the International Trans-Antarctic Scientific Expedition ( ITASE). The ITASE ...


28. Ion Concentrations from SPRESSO Ice Core, Antarctica [NSIDC-0471]
This data set contains ion measurements from co-registered samples from the South Pole Remote Earth Science and Seismological Observatory (SPRESSO) ice core. The core was drilled during the 2002-2003 ...


29. Mt. Moulton Ice Trench Mass Spectrometry Data, Antarctica [NSIDC-0472]
This data set contains measurments from co-registered samples from a horizontal trench in the Mt. Moulton Blue Ice Area (BIA) in Antarctica. All 3795 co-registered samples were analyzed for their ...


30. Multiple Isotope Analysis of Sulfate in the West Antarctic Ice Sheet Divide Ice Core [NSIDC-0479]
This data set contains measurements of multiple sulfur and oxygen isotopes from sulfates, from an ice core drilled at the West Antarctic Ice Sheet (WAIS) Divide site in 2005. The initial sulfate measurements, ...


31. Alkanes in Firn Air Samples, Antarctica and Greenland [NSIDC-0504]
This data set contains ethane, propane, and n-butane measurements in firn air from the South Pole and the West Antarctic Ice Sheet (WAIS) Divide in Antarctica, and from Summit, Greenland. The WAIS ...


32. Allan Hills Stable Water Isotopes [NSIDC-0541]
This data set includes stable water isotope values at 10 m resolution along an approximately 5 km transect through the main icefield of the Allan Hills Blue Ice Area, and at 15 cm within a 225 m ...


33. Ice Core Chemistry from the Norwegian-U.S. Scientific Traverse of East Antarctica, IPY 2007-2009 [NSIDC-0520]
This data set consists of sodium (Na) and magnesium (Mg) concentrations versus depth in seven ice cores that were obtained by the Norwegian-U.S. Scientific Traverse of East Antarctica during the International ...


34. Methane Isotopes in South Pole Firn Air, 2008 [NSIDC-0502]
This data set contains depth profiles for delta carbon-13 (δ13C) and delta deuterium (δD) of methane (CH4) in South Pole firn air. The investigators obtained air samples from ...


35. LBA-ECO CD-02 Carbon and Oxygen Isotopes in Atmospheric CO2 in the Amazon: 1999-2004 [LBA_CDO2_ATMOSPHERE_ISOTOPES]
This data set reports carbon and oxygen stable isotope ratios of atmospheric carbon dioxide (CO2) collected at several forest and pasture sites and in the free troposphere over Amazonia. There are ...


36. LBA-ECO CD-02 Leaf Level Gas Exchange, Chemistry, and Isotopes, Amazonia, Brazil [LBA_CDO2_LEAF_GAS_EXCHANGE]
This data set reports leaf gas flux and leaf properties from samples collected from trees, liana, pasture saplings, and pasture grass located at eight different sampling locations in the states of ...


37. LBA-ECO ND-07 Trace Gas Fluxes Under Multiple Land Uses, Brazil: 1999-2004 [LBA_ND07_TRACE_GAS_LAND_USE]
This data set reports on soil-atmosphere fluxes of trace carbon dioxide, carbon monoxide, nitrous oxide, and nitric oxide (CO2, CO, N2O, NO) under various natural and manipulated land use conditions. ...


38. LBA-ECO TG-09 Soil Isotopic C, N, H2O, and N2O Data, Tapajos National Forest, Brazil [LBA_TG09_N2O_SOILS]
This data set reports the results of carbon, nitrogen, and oxygen isotopic analyses of soil, soil water, and N2O soil gas samples; total soil carbon and nitrogen concentrations; and soil texture and ...


39. First ISCCP Regional Experiment (FIRE) Atlantic Stratocumulus Transition Experiment (ASTEX) MAGE Oceanus Sulfur in the Air Data [FIRE_AX_MAGE_OCN_AIR]
The First ISCCP Regional Experiments have been designed to improve data products and cloud/radiation parameterizations used in general circulation models (GCMs). Specifically, the goals of FIRE are ...


40. First ISCCP Regional Experiment (FIRE) Atlantic Stratocumulus Transition Experiment (ASTEX) MAGE Oceanus Sulfur in the Ocean Data [FIRE_AX_MAGE_OCN_SEA]
The First ISCCP Regional Experiments have been designed to improve data products and cloud/radiation parameterizations used in general circulation models (GCMs). Specifically, the goals of FIRE are ...


41. NARSTO 1998 Model-Intercomparison Study Verification Data: NARSTO-Northeast 1995 Surface Ozone, NO, and NOx Langley Data Center Data Set [NARSTO_NE_MODEL]
The NARSTO_NE_MODEL data set supports the NARSTO Model Intercomparison activity described in the report of a workshop that was held in Washington, DC on May 27-28, 1998. The intercomparison activity ...


42. NARSTO EPA_SS_HOUSTON PM2.5 Nitrate, Sulfate, and Carbon Data [NARSTO_EPA_SS_HT_NO3_SO4_C]
The NARSTO_EPA_SS_HOUSTON_NO3_SO4_C_DATA files contain continuous measurements of PM2.5 nitrate, PM2.5 sulfate, and PM2.5 carbon collected during August 12, 2000 through November 5, 2001 at the Aldine, ...


43. NARSTO EPA_SS_HOUSTON TEXAQS2000 DOE G-1 Air Chemistry, Aerosol, and Met Data [NARSTO_EPA_SS_HT_DOE_G-1]
The NARSTO_EPA_SS_HOUSTON_TEXAQS2000_DOE_G-1_DATA were collected from the DOE G-1 Research Aircraft Facility during the Texas 2000 Air Quality Study. Twenty research flights were made from August ...


44. NARSTO EPA_SS_HOUSTON TEXAQS2000 TNRCC CAMS Air Quality Data [NARSTO_EPA_SS_HT_CAMS]
The NARSTO_EPA_HOUSTON_TEXAQS2000_CAMS_DATA data set contains 5-minute air quality measurements collected in Texas during August and September 2000 at 85 continuous ambient monitoring stations (CAMS) ...


45. NARSTO EPA_SS_HOUSTON TEXAQS2000 Washburn Tunnel Air Quality Monitoring Data [NARSTO_EPA_SS_HT_WB_TUNNEL]
The NARSTO_EPA_SS_HOUSTON_TEXAQS2000_WB_TUNNEL data contain gas and particle phase measurements collected in a tunnel in the Houston area during the summer of 2000. The primary objective of this study ...


46. NARSTO EPA_SS_LOS_ANGELES PM2.5 Particulate Nitrate [NARSTO_EPA_SS_LA_PM25_NITRATE]
The NARSTO_EPA_SS_LOS_ANGELES_PM25_NITRATE data were collected between July 2001 and January 2002. At Claremont and Rubidoux (Los Angeles County, California), Cascaded Integrated Collection and Vaporization ...


47. NARSTO EPA_SS_NEW_YORK Air Chemistry, Particulate Matter, and Met Data [NARSTO_EPA_SS_NY_AIR_CHEM_PM]
The NARSTO_EPA_SS_NEW_YORK_AIR_CHEM_PM_MET_DATA were collected between 2001 and 2006 during the PM2.5 Technology Assessment and Characterization Study in New York State (PMTACS-NY). Data files from ...


48. NARSTO ICARTT NEAX 2004 DOE G-1 Air Chemistry, Aerosol, and Met Data [NARSTO_ICARTT_NEAX_2004_DOE_G-1]
The NARSTO_ICARTT_NEAX_2004_DOE_G-1_DATA were collected in July and August, 2004 during the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT), NorthEast Aerosol ...


49. NARSTO PAC2001 Cassiar Tunnel Gaseous and Particle Mass and Composition Data [NARSTO_PAC2001_CASSIAR_TUNNEL]
The NARSTO_PAC2001_CASSIAR_TUNNEL_GAS_PM_DATA were obtained August 8-15, 2001 during the Pacific 2001 Air Quality Study (PAC2001). The Cassiar Tunnel site is located at 49 17' 01.9 N and 123 01' ...


50. NARSTO SOS99NASH DOE G-1 Air Chemistry Data [NARSTO_SOS99NASH_G-1_AIR_CHEM]
The NARSTO_SOS99NASH_G-1_AIR_CHEMISTRY_DATA were collected via the G-1 aircraft deployed during the 1999 campaign to make measurements within the Nashville urban plume. These situ, semi-Lagrangian ...


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