Výsledky vyhledávání - "E. J. Lanzendorf"

Comparing atmospheric [HO2]/[OH] to modeled [HO2]/[OH]: Identifying discrepancies with reaction rates

Autor: E. J. Lanzendorf, R. M. Stimpfle, James G. Anderson, Thomas F. Hanisco, Paul O. Wennberg, Ronald C. Cohen

Publikováno v: Geophysical Research Letters. 28:967-970

Reactions that inter-convert OH and HO_2 are directly involved in the catalytic removal of O_3 in the lower stratosphere and in the catalytic production of O_3 in the upper troposphere. The agreement between the measured and modeled [HO_2]/[OH] tests

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33f9ae76c140dc24a5cf8b81c0034f13
https://doi.org/10.1029/2000gl012264

Zobrazit plný text záznamu

The NOx−HNO3System in the Lower Stratosphere: Insights from In Situ Measurements and Implications of theJHNO3−[OH] Relationship

Autor: Paul O. Wennberg, Max Loewenstein, G. P. Bonne, L. A. Del Negro, Thomas F. Hanisco, James G. Anderson, L. C. Koch, Katherine K. Perkins, Paul B. Voss, T. P. Bui, Eric J. Hintsa, C. T. McElroy, R. M. Stimpfle, Ronald C. Cohen, Ross J. Salawitch, E. J. Lanzendorf, Ru-Shan Gao

Publikováno v: The Journal of Physical Chemistry A. 105:1521-1534

During the 1997 Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS) mission, simultaneous in situ observations of NO_x and HO_x radicals, their precursors, and the radiation field were obtained in the lower stratosphere. We use thes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b4c6a1ddd647ea9e10a379b33c06ea1
https://doi.org/10.1021/jp002519n

Zobrazit plný text záznamu

Inorganic chlorine partitioning in the summer lower stratosphere: Modeled and measured [ClONO2]/[HCl] during POLARIS

Autor: P. B. Voss, Katherine K. Perkins, G. P. Bonne, L. R. Lait, James W. Elkins, Thomas F. Hanisco, T. P. Bui, Paul O. Wennberg, Ronald C. Cohen, James G. Anderson, R. M. Stimpfle, Ross J. Salawitch, Paul A. Newman, D. C. Scott, R. D. May, E. J. Lanzendorf, Christopher R. Webster

Publikováno v: Journal of Geophysical Research: Atmospheres. 106:1713-1732

We examine inorganic chlorine (Cly) partitioning in the summer lower stratosphere using in situ ER-2 aircraft observations made during the Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS) campaign. New steady state and numerical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73d89baaaa72abacb9a03c74c32cc622
https://doi.org/10.1029/2000jd900494

Zobrazit plný text záznamu

Sources, Sinks, and the Distribution of OH in the Lower Stratosphere

Autor: Ru-Shan Gao, C. T. McElroy, P. B. Voss, C. Midwinter, Eric J. Hintsa, Ronald C. Cohen, R. J. Salawitch, J. J. Margitan, E. J. Lanzendorf, James G. Anderson, Katherine K. Perkins, Paul O. Wennberg, R. M. Stimpfle, T. F. Hanisco, David W. Fahey

Publikováno v: The Journal of Physical Chemistry A. 105:1543-1553

Extensive measurement campaigns by the NASA ER-2 research aircraft have obtained a nearly pole-to-pole database of the species that control HO_x (OH + HO_2) chemistry. The wide dynamic range of these in situ measurements provides an opportunity to de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0117a4b166a818856c6eba7087c77a1
https://doi.org/10.1021/jp002334g

Zobrazit plný text záznamu

Establishing the Dependence of [HO2]/[OH] on Temperature, Halogen Loading, O3, and NOx Based on in Situ Measurements from the NASA ER-2

Autor: Ronald C. Cohen, Ru-Shan Gao, E. J. Lanzendorf, T. P. Bui, James J. Margitan, Thomas F. Hanisco, R. M. Stimpfle, Paul O. Wennberg, James G. Anderson

Publikováno v: The Journal of Physical Chemistry A. 105:1535-1542

In situ observations of OH and HO_2 from the Airborne Southern Hemisphere Ozone Experiment/Measurements for Assessing the Effects of Stratospheric Aircraft (ASHOE/MAESA), Stratospheric TRacers of Atmospheric Transport (STRAT), and Polar Ozone Loss in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04d7ec7cf8960532b9cfbfed47e9fbca
https://doi.org/10.1021/jp002384l

Zobrazit plný text záznamu

Influence of air mass histories on radical species during the Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS) mission

Autor: Katherine K. Perkins, Ross J. Salawitch, Stephan R. Kawa, E. J. Lanzendorf, J. M. Pierson, Ru-Shan Gao, Thomas F. Hanisco

Publikováno v: Journal of Geophysical Research: Atmospheres. 105:15185-15199

The Goddard trajectory chemistry model was used with ER-2 aircraft data to test our current knowledge of radical photochemistry during the Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS) campaign. The results of the trajectory c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a479659f1973c687b7dffb1e7dbab6fd
https://doi.org/10.1029/2000jd900111

Zobrazit plný text záznamu

Measurements of CO in the upper troposphere and lower stratosphere

Autor: Thomas F. Hanisco, Paul O. Wennberg, E. J. Lanzendorf, D. C. Scott, Yuk L. Yung, Robert L. Herman, Ross J. Salawitch, T. P. Bui, H. Hu, Elisabeth J. Moyer, Randy D. May, James J. Margitan, Christopher R. Webster

Publikováno v: Chemosphere - Global Change Science. 1:173-183

In situ measurements of CO were made in the upper troposphere and lower stratosphere (7–21 km altitude) with the Jet Propulsion Laboratory (JPL) Aircraft Laser Infrared Absorption Spectrometer (ALIAS) on 58 flights of the NASA ER-2 aircraft from Oc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd65618cff2dbce49281dbbeea495aa7
https://doi.org/10.1016/s1465-9972(99)00008-2

Zobrazit plný text záznamu

Twilight observations suggest unknown sources of HOx

Autor: Thomas F. Hanisco, Paul O. Wennberg, Steven A. Lloyd, Eric J. Hintsa, William H. Swartz, Veronica Vaida, D. J. Donaldson, T. L. Kusterer, Donald E. Anderson, Katherine K. Perkins, Ru-Shan Gao, E. J. Lanzendorf, Ronald C. Cohen, Ross J. Salawitch

Publikováno v: Geophysical Research Letters. 26:1373-1376

Measurements of the concentrations of OH and HO_(2) (HO_(x)) in the high-latitude lower stratosphere imply the existence of unknown photolytic sources of HO_(x). The strength of the additional HO_(x) source required to match the observations depends

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7f7b0579b10b597ee55a29043013ddf
https://doi.org/10.1029/1999gl900255

Zobrazit plný text záznamu

NOypartitioning from measurements of nitrogen and hydrogen radicals in the upper troposphere

Publikováno v: Geophysical Research Letters. 26:51-54

Recent studies using NO, NOy, OH and HO2 (HOx) observations have postulated acetone and convection of peroxides as significant sources of HOx in the upper troposphere (UT). This work focuses on the effect these additional HOx sources have on the mode

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bb8ebb4242605c2197ea3d1738199026
https://doi.org/10.1029/1998gl900219

Zobrazit plný text záznamu

Hydrogen Radicals, Nitrogen Radicals, and the Production of O 3 in the Upper Troposphere

Publikováno v: Science. 279:49-53

The concentrations of the hydrogen radicals OH and HO 2 in the middle and upper troposphere were measured simultaneously with those of NO, O 3 , CO, H 2 O, CH 4 , non-methane hydrocarbons, and with the ultraviolet and visible radiation field. The dat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::785693cf2104a6f6443853b08daf3213
https://doi.org/10.1126/science.279.5347.49

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání