Search Results - "Gregory, Gerald L"

Chemical characteristics of air from differing source regions during the Pacific Exploratory Mission-Tropics A (PEM-Tropics A) by Board, Ashley S., Fuelberg, Henry E., Gregory, Gerald L., Heikes, Brian G., Schultz, Martin G., Blake, Donald R., Dibb, Jack E., Sandholm, Scott T., Talbot, Robert W.

“…Ten‐day backward trajectories are used to determine the origins of air parcels arriving at airborne DC‐8 chemical measurement sites during NASA's Pacific…”
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On the origin of tropospheric ozone and NOx over the tropical South Pacific by Schultz, Martin G., Jacob, Daniel J., Wang, Yuhang, Logan, Jennifer A., Atlas, Elliot L., Blake, Donald R., Blake, Nicola J., Bradshaw, John D., Browell, Edward V., Fenn, Marta A., Flocke, Frank, Gregory, Gerald L., Heikes, Brian G., Sachse, Glen W., Sandholm, Scott T., Shetter, Richard E., Singh, Hanwant B., Talbot, Robert W.

“…The budgets of ozone and nitrogen oxides (NOx = NO + NO2) in the tropical South Pacific troposphere are analyzed by photochemical point modeling of aircraft…”
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Influence of southern hemispheric biomass burning on midtropospheric distributions of nonmethane hydrocarbons and selected halocarbons over the remote South Pacific by Blake, Nicola J., Blake, Donald R., Wingenter, Oliver W., Sive, Barkley C., McKenzie, Lisa M., Lopez, Jimena P., Simpson, Isobel J., Fuelberg, Henry E., Sachse, Glen W., Anderson, Bruce E., Gregory, Gerald L., Carroll, Mary Anne, Albercook, George M., Rowland, F. Sherwood

“…Aircraft measurements of nonmethane hydrocarbons (NMHCs) and halocarbons were made over the remote South Pacific Ocean during late August‐early October 1996…”
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A meteorological overview of the Pacific Exploratory Mission (PEM) Tropics period by Fuelberg, Henry E., Newell, Reginald E., Longmore, Scott P., Zhu, Yong, Westberg, David J., Browell, Edward V., Blake, Donald R., Gregory, Gerald L., Sachse, Glen W.

“…NASA's Pacific Exploratory Mission‐Tropics (PEM‐T) experiment investigated the atmospheric chemistry of a large portion of the tropical and subtropical Pacific…”
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Ozone and aerosol distributions and air mass characteristics over the South Pacific during the burning season by Fenn, Marta A., Browell, Edward V., Butler, Carolyn F., Grant, William B., Kooi, Susan A., Clayton, Marian B., Gregory, Gerald L., Newell, Reginald E., Zhu, Yong, Dibb, Jack E., Fuelberg, Henry E., Anderson, Bruce E., Bandy, Alan R., Blake, Donald R., Bradshaw, John D., Heikes, Brian G., Sachse, Glen W., Sandholm, Scott T., Singh, Hanwant B., Talbot, Robert W., Thornton, Donald C.

“…In situ and laser remote measurements of gases and aerosols were made with airborne instrumentation to establish a baseline chemical signature of the…”
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Tropospheric ozone layers observed during PEM-Tropics B by Thouret, Valérie, Cho, John Y. N., Evans, Mathew J., Newell, Reginald E., Avery, Melody A., Barrick, John D. W., Sachse, Glen W., Gregory, Gerald L.

“…In this paper we analyze distinct layers seen in the tropospheric ozone and water vapor profiles taken during NASA's Global Tropospheric Experiment (GTE)…”
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Observations of convective and dynamical instabilities in tropopause folds and their contribution to stratosphere-troposphere exchange by Cho, John Y. N., Newell, Reginald E., Bui, T. Paul, Browell, Edward V., Fenn, Marta A., Mahoney, Michael J., Gregory, Gerald L., Sachse, Glen W., Vay, Stephanie A., Kucsera, Tom L., Thompson, Anne M.

“…With aircraft‐mounted in situ and remote sensing instruments for dynamical, thermal, and chemical measurements we studied two cases of tropopause folding. In…”
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A case study of transport of tropical marine boundary layer and lower tropospheric air masses to the northern midlatitude upper troposphere by Grant, William B., Browell, Edward V., Butler, Carolyn F., Fenn, Marta A., Clayton, Marian B., Hannan, John R., Fuelberg, Henry E., Blake, Donald R., Blake, Nicola J., Gregory, Gerald L., Heikes, Brian G., Sachse, Glen W., Singh, Hanwant B., Snow, Julie, Talbot, Robert W.

“…Low‐ozone (<20 ppbv) air masses were observed in the upper troposphere in northern midlatitudes over the eastern United States and the North Atlantic Ocean on…”
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A meteorological overview of the Subsonic Assessment Ozone and Nitrogen Oxide Experiment (SONEX) period by Fuelberg, Henry E., Hannan, John R., Velthoven, Peter F. J., Browell, Edward V., Bieberbach, George, Knabb, Richard D., Gregory, Gerald L., Pickering, Kenneth E., Selkirk, Henry B.

“…Meteorological conditions are described during NASA's Subsonic Assessment (SASS) Ozone and Nitrogen Oxide Experiment (SONEX) that was conducted over the North…”
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Atmospheric layers measured from the NASA DC-8 during PEM-West B and comparison with PEM-West A by Wu, Zhongxiang, Newell, Reginald E., Zhu, Yong, Anderson, Bruce E., Browell, Edward V., Gregory, Gerald L., Sachse, Glen W., Collins, James E., Jr

“…The Pacific Exploratory Mission-West B (PEM-West B) explored atmospheric layer structure using measurements of O3, H2O, CO, and CH4 from the NASA DC-8…”
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Atmospheric chemical transport based on high-resolution model-derived winds: A case study by Hannan, John R., Fuelberg, Henry E., Thompson, Anne M., Bieberbach, George, Knabb, Richard D., Kondo, Yutaka, Anderson, Bruce E., Browell, Edward V., Gregory, Gerald L., Sachse, Glen W., Singh, Hanwant B.

“…Flight 10 of NASA's Subsonic Assessment (SASS) Ozone and Nitrogen Oxide Experiment (SONEX) extended southwest of Lajes, Azores. A variety of chemical…”
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Airborne Measurements of Chemical Species Near Taiwan During Mid-Autumn by 柳中明(Chung-Ming Liu), 劉紹臣(Shaw-Chen Liu), Robert J. McNeal, Douglas D. Davis, James M. Hoell Jr, Gerald L. Gregory, Bruce E. Anderson, Ken Kelly, John D. Bradshaw, Scott T. Sandholm, Hanwant B. Singh, Robert W

“…Between September and October, 1991, scientists from the US, Japan, Taiwan, Korea China and Hong Kong participated in the intensive observation of the PEM-west…”
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Laboratory evaluation of an airborne ozone instrument that compensates for altitude/sensitivity effects by Gregory, Gerald L, Hudgins, Charles H, Edahl, Robert A

“…One problem encountered in the use of air-quality instrumentation on aircraft is the variation of instrument sensitivity with pressure as the result of…”
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Response to comments on "Laboratory evaluation of an airborne ozone instrument that compensates for altitude/sensitivity effects" by Gregory, Gerald L, Hudgins, Charles H, Edahl, Robert A

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Horizontal wavenumber spectra of winds, temperature, and trace gases during the Pacific Exploratory Missions: 1. Climatology by Cho, John Y. N., Zhu, Yong, Newell, Reginald E., Anderson, Bruce E., Barrick, John D., Gregory, Gerald L., Sachse, Glen W., Carroll, Mary Anne, Albercook, George M.

“…Aircraft‐based meteorological and chemical measurements from NASA's Pacific Exploratory Missions provide a suitable database for studying the climatology of…”
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Comparison of measured ozone in southeastern Virginia with computer predictions from a photochemical model by Wakelyn, N. T, Gregory, Gerald L

“…To assess the reasonableness and consistency of the NASA airborne determination and photochemical model, field data collected on August 4, 1977, during a…”
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Distribution of hydrogen peroxide and methylhydroperoxide over the Pacific and South Atlantic Oceans by O'Sullivan, D. W., Heikes, B. G., Lee, M., Chang, W., Gregory, G. L., Blake, D. R., Sachse, G. W.

“…The gas phase hydrogen peroxide and methylhydroperoxide concentrations were measured in the troposphere over the tropical Pacific Ocean as a component of…”
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Influence of biomass combustion emissions on the distribution of acidic trace gases over the southern Pacific basin during austral springtime by Talbot, R. W., Dibb, J. E., Scheuer, E. M., Blake, D. R., Blake, N. J., Gregory, G. L., Sachse, G. W., Bradshaw, J. D., Sandholm, S. T., Singh, H. B.

“…This paper describes the large‐scale distributions of HNO3, HCOOH, and CH3COOH over the central and South Pacific basins during the Pacific Exploratory…”
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Perspectives on NO, NOy, and fine aerosol sources and variability during SONEX by Thompson, Anne M., Sparling, Lynn C., Kondo, Yutaka, Anderson, Bruce E., Gregory, Gerald L., Sachse, Glen W.

“…Distributions of upper tropospheric tracer data on each of the 14 science flights of SONEX (SASS [Subsonics Assessment] Ozone and Nitrogen Oxides Experiment)…”
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Tropospheric ozone layers observed during PEM-Tropics B : NASA global tropospheric experiment Pacific Exploratory Mission in the tropics phase B, Part 1: Measurements and analyses (PEM-Tropics B) by THOURET, Valérie, CHO, John Y. N, EVANS, Mathew J, NEWELL, Reginald E, AVERY, Melody A, BARRICK, John D. W, SACHSE, Glen W, GREGORY, Gerald L

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