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1. 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 ...


2. 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 ...


3. Global Tropospheric Experiment [GTE]   CHILD DIFs
The Global Tropospheric Experiment (GTE) is a major component of the NASA Tropospheric Chemistry Program. GTE consists of a series of airborne field experiments designed to (1) evaluate the capability ...


4. 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 ...


5. 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 ...


6. MODIS/Aqua Near Real Time (NRT) Aerosol 5-Min L2 Swath 10km (Collection 005) [MYD04_L2_C5_NRT]
MODIS was launched aboard the Aqua satellite on May 04, 2002 (1:30 pm equator crossing time) as part of NASA's Earth Observing System (EOS) mission. ...


7. MODIS/Terra Near Real Time (NRT) Aerosol 5-Min L2 Swath 10km (Collection 005) [MOD04_L2_C5_NRT]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. ...


8. 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, ...


9. 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 ...


10. NARSTO EPA_SS_HOUSTON TEXAQS2000 Particulate Matter FTIR Composition [NARSTO_EPA_SS_HT_PM_FTIR]
The NARSTO_EPA_SS_HOUSTON_TEXAQS2000_PM_FTIR measurement data consist of absolute absorbance areas for organonitrates, sulfate, aliphatic carbon and carbonyl compounds for size segregated particulate ...


11. 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 ...


12. 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 ...


13. 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 ...


14. 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 ...


15. NARSTO SHEMP Particulate Matter Composition Data, Canada, 2000-2002 [NARSTO_SHEMP_CANADA_PM_COMP]
The NARSTO_SHEMP_CANADA_PM_COMPOSTION_DATA were obtained between February 14, 2000 and August 1, 2002 during the Study of the Health Effects of the Mix of Urban Air Pollutants (SHEMP). SHEMP was ...


16. NARSTO_SOS_SC_UPSTATE PM2.5 Composition Data [NARSTO_SOS_SC_UPSTATE_COMP]
The NARSTO_SOS_SC_UPSTATE_PM25_COMPOSITION data were collected during July 2001 and January of 2002 to elucidate the seasonal variability of the aerosols. Samples were collected at a rural location ...


17. NARSTO EPA_SS_ATLANTA 1999 Air Chemistry, Particulate Matter, and Met Data [NARSTO_EPA_SS_ATL_CHEM_PM_MET]
The NARSTO_EPA_SS_ATLANTA_1999_CHEM_PM_MET_DATA were obtained from July to September 1999 during the Atlanta Experiment of the U.S. EPA Particulate Matter Supersites Program. The U.S. Environmental ...


18. NARSTO EPA_SS_FRESNO PM2.5 Particulate Nitrate and Sulfate Data [NARSTO_EPA_SS_FRESNO_PM25_NO3_SO4]
The NARSTO_EPA_SS_FRESNO_PM25_NO3_SO4 data set contains measurements taken from two nitrate monitors and one sulfate monitor operated at the Fresno Supersite. The sample collection time for all instruments ...


19. NARSTO PAC2001 Golden Ears Provincial Park Gaseous and Particle Data [NARSTO_PAC2001_GOLDEN_EARS]
The NARSTO_PAC2001_GOLDEN_EARS_GAS_PM_DATA were obtained August 3-11, 2001 during the Pacific 2001 Air Quality Study (PAC2001). The Golden Ears Provincial Park (GEP) site was situated at 49.27783 ...


20. NARSTO PAC2001 Langley Site Gaseous, Particle, and Meteorological Data [NARSTO_PAC2001_LANGLEY]
The NARSTO_PAC2001_LANGLEY_GAS_PM_MET_DATA were obtained between August 8 and September 2, 2001 during the Pacific 2001 Air Quality Study (PAC2001). The Langley Ecole Lochiel (LEL) site was at 49.0289 ...


21. NARSTO PAC2001 Slocan Park Site Gaseous, Particle, and Meteorological Data [NARSTO_PAC2001_SLOCAN_PARK]
The NARSTO_PAC2001_SLOCAN_PARK_GAS_PM_MET_DATA were collected between August 11 and September 01, 2001 during the Pacific 2001 Air Quality Study (PAC2001). The Slocan Park (SLPK) site, at 49?14'38.2 ...


22. NARSTO PAC2001 Sumas Eagle Ridge Gaseous, Particle, and Meteorological Data [NARSTO_PAC2001_SUMAS_MTN]
The NARSTO_PAC2001_SUMAS_MTN_GAS_PM_MET_DATA were obtained between August 13 and September 5, 2001 during the Pacific 2001 Air Quality Study (PAC2001). Measurements at the Sumas Eagle Ridge (SER) ...


23. Global Earth Observation and Monitoring of the Atmosphere (GEOmon) Data Products [GEOMON_PARENT_DATA]
[Source: GEOmon Home Page, http://www.geomon.eu/ ] The GEOmon Data Centre provides easy access to high quality data products on atmospheric composition. ...


24. MODIS/Terra Near Real Time (NRT) L3 Value-added Aerosol Optical Depth [MODAODHD_C5_NRT]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with its 2330 km viewing swath width ...


25. NRT L3 Value-added Aerosol Optical Depth [MYDAODHD]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with its 2330 km viewing swath width ...


26. NRT L3 Value-added Aerosol Optical Depth [MCDAODHD]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with its 2330 km viewing swath width ...


27. NASA Earth Science Decadal Survey Studies [Planning Stage] [NASA_Decadal_Survey_Place_Holder]
[These missions are in the planning stage. Please monitor the project web sites for mission updates] [Source: NASA's Science ...


28. Concentration of aerosols, gaseous sulfur compounds and oxidants in the southern atmosphere (Coastal Antarctica, Dumont d'Urville Station) [414_0_IPEV_FR]
This program is dedicated to the study of key atmospheric species present in the lower troposphere at mid and high southern latitudes, these regions being still undisturbed by human activities. The ...


29. MODIS/Terra Aerosol 5-Min L2 Swath 10km (Collection 004 and 005) [MOD04_L2]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. ...


30. NRT L3 Value-added Aerosol Optical Depth [MODAODHD]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with its 2330 km viewing swath width ...


31. MODIS/Aqua Aerosol 5-Min L2 Swath 10km (Collection 004 and 005) [MYD04_L2]
MODIS was launched aboard the Aqua satellite on May 04, 2002 (1:30 pm equator crossing time) as part of NASA's Earth Observing System (EOS) mission. ...


32. Photochemistry of Ozone Loss in the Arctic Region In Summer (POLARIS) Data Archive [NASA_ARC_POLARIS]
POLARIS was a series of high-altitude airborne investigations to understand the behavior of polar stratospheric ozone as it changes from very high concentrations in the spring down to very low concentrations ...


33. MODIS/Aqua Aerosol Cloud Water Vapor Ozone 8-Day L3 Global 1Deg CMG (MYD08_E3, Collection 004 and 005) [MYD08_E3]
MODIS was launched aboard the Aqua satellite on May 04, 2002 (1:30 pm equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with ...


34. MODIS/Aqua Aerosol Cloud Water Vapor Ozone Daily L3 Global 1Deg CMG (Collection 004 and 005) [MYD08_D3]
MODIS was launched aboard the Aqua satellite on May 04, 2002 (1:30 pm equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with ...


35. MODIS/Aqua Aerosol Cloud Water Vapor Ozone Monthly L3 Global 1Deg CMG (MYD08_M3, Collection 004 and 005) [MYD08_M3]
MODIS was launched aboard the Aqua satellite on May 04, 2002 (1:30 pm equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS with ...


36. MODIS/Terra Aerosol Cloud Water Vapor Ozone 8-Day L3 Global 1Deg CMG (MOD08_E3, Collection 004 and 005) [MOD08_E3]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS ...


37. MODIS/Terra Aerosol Cloud Water Vapor Ozone Daily L3 Global 1Deg CMG (Collection 004 and 005) [MOD08_D3]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. ...


38. MODIS/Terra Aerosol Cloud Water Vapor Ozone Monthly L3 Global 1Deg CMG (MOD08_M3, Collection 004 and 005) [MOD08_M3]
MODIS was launched aboard the Terra satellite on December 18, 1999 (10:30 am equator crossing time) as part of NASA's Earth Observing System (EOS) mission. MODIS ...


39. National Air Pollution Surveillance (NAPS) Network in Canada [CANEMRCCRSAIRPOLLUTION]
The National Air Pollution Surveillance (NAPS) Network was established in 1969 as a joint program of the federal and provincial governments to monitor and assess the quality of the ambient air in ...


40. ASCOS-AMS-01 [SMHI_IPY_ASCOS-AMS-01]
ASCOS was an interdisciplinary expedition to the central Arctic on the icebreaker Oden from 1 August to 9 September 2008. The expedition focused on processes relating to cloud formation in the summer ...


41. ASCOS-ETHZATOFMS-01 [SMHI_IPY_ASCOS-ETHZATOFMS-01]
ASCOS was an interdisciplinary expedition to the central Arctic on the icebreaker Oden from 1 August to 9 September 2008. The expedition focused on processes relating to cloud formation in the summer ...


42. South Pole Atmospheric Nitrate Isotopic Analysis [thiemens_0125761]
This data set contains oxygen isotope measurements of nitrate from the South Pole Amundsen-Scott Station. A 6 meter snow pit provides a 25-year record of nitrate isotope variations and ...


43. Bao-Marchant high-resolution ion concentration and multiple stable isotope compositions from soils of the McMurdo Dry Valleys [Bao-Marchant_MDV_high-resolution_soil_ions]
The Bao-Marchant data set is a high-resolution (vertical) concentrations and stable isotope compositions for water-soluble anions and cations form various soils in the MDV. Each soil samples ...


44. ISCAT 2000 Observations of South Pole Aerosols [ISCAT_2000b]
The ISCAT 2000 field observations went from mid November to end of December 2000 at the South Pole. The aerosol observations were made on the roof of the Atmospheric Research Observatory ...


45. ISCAT-1998-South-Pole-aerosol-Observations [ISCAT-1998-South-Pole-Aerosols]
The 1998 - 1999 ISCAT South Pole observational data are available on one CD-ROM. The aerosol data, trace gas data, and photolyitc rate coefficients are separated into three directories: ...


46. Global Atmospheric Background Monitoring for Selected Environmental Parameters - BAPMoN Data [gov.noaa.ncdc.C00311]
The National Climatic Data Center (NCDC) has, in archive, a number of copies of this historical publication dated between 1973 and 1991. The publication had several different titles during this period. ...


47. NASA Global Atmospheric Sampling Program (GASP) (DSI-9704) [gov.noaa.ncdc.C00249]
The National Climatic Data Center (NCDC) has, in archive, digital data from the historical NASA Global Atmospheric Sampling Program (GASP). The GASP program began in 1972 with a feasibility study ...


48. Physical and chemical properties and processes of boundary layer aerosols at Aboa, Queen Maud Land [Boundary_layer_aerosol_properties_at_Aboa_QML]
Physical and chemical properties of boundary layer aerosols have been measured at the Finnish Antarctic research station Aboa in Queen Maud Land (73 degrees 03' S, 13 degrees 25' W). The measurements ...


49. GISP2 Atmospheric Sampling Site (ATM) Aerosols, 2 Years [NOAA_NCDC_PALEO_GISP2-ATM]
This data consists of the measured aerosol concentrations from the atmospheric sampling site (ATM) during the 1993 and 1994 summer field seasons. The concentrations are in units of nanomole ...


50. Interagency Monitoring of Protected Visual Environments Program (IMPROVE) Yearly Data by Season for the EPA Clean Air Mapping and Analysis Program (C-MAP) [IMPROVE_Coverage_Yearly]
This data set contain the yearly data by season for the IMPROVE Program monitoring sites. IMPROVE, or the Interagency Monitoring of Protected Visual Environments Program, is helping the National ...


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