Search Results - "VÖMEL, H"

Reference quality upper-air measurements: GRUAN data processing for the Vaisala RS92 radiosonde by Dirksen, R. J, Sommer, M, Immler, F. J, Hurst, D. F, Kivi, R, Vömel, H

“…The GCOS (Global Climate Observing System) Reference Upper-Air Network (GRUAN) data processing for the Vaisala RS92 radiosonde was developed to meet the…”
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Accuracy of tropospheric and stratospheric water vapor measurements by the cryogenic frost point hygrometer: Instrumental details and observations by Vömel, H., David, D. E., Smith, K.

“…The cryogenic frost point hygrometer (CFH), currently built at the University of Colorado, is a new balloon borne hygrometer, which is capable of continuously…”
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REFERENCE UPPER-AIR OBSERVATIONS FOR CLIMATE: From Concept to Reality by Bodeker, G. E., Bojinski, S., Cimini, D., Dirksen, R. J., Haeffelin, M., Hannigan, J. W., Hurst, D. F., Leblanc, T., Madonna, F., Maturilli, M., Mikalsen, A. C., Philipona, R., Reale, T., Seidel, D. J., Tan, D. G. H., Thorne, P. W., Vömel, H., Wang, J.

“…The three main objectives of the Global Climate Observing System (GCOS) Reference Upper-Air Network (GRUAN) are to provide long-term high-quality climate…”
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Particle backscatter and relative humidity measured across cirrus clouds and comparison with microphysical cirrus modelling by Brabec, M, Wienhold, F. G, Luo, B. P, Vömel, H, Immler, F, Steiner, P, Hausammann, E, Weers, U, Peter, T

“…Advanced measurement and modelling techniques are employed to estimate the partitioning of atmospheric water between the gas phase and the condensed phase in…”
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Validation of GOME-2/MetOp-A total water vapour column using reference radiosonde data from the GRUAN network by Antón, M, Loyola, D, Román, R, Vömel, H

“…The main goal of this paper is to validate the total water vapour column (TWVC) measured by the Global Ozone Monitoring Experiment-2 (GOME-2) satellite sensor…”
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Unprecedented Observations of a Nascent In Situ Cirrus in the Tropical Tropopause Layer by Reinares Martínez, I., Evan, S., Wienhold, F. G., Brioude, J., Jensen, E. J., Thornberry, T. D., Héron, D., Verreyken, B., Körner, S., Vömel, H., Metzger, J.‐M., Posny, F.

“…A nascent in situ cirrus was observed on January 11, 2019 in the tropical tropopause layer (TTL) over the southwestern Indian Ocean, with the use of…”
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Reference Quality Upper-Air Measurements: guidance for developing GRUAN data products by Immler, F. J., Dykema, J., Gardiner, T., Whiteman, D. N., Thorne, P. W., Vömel, H.

“…The accurate monitoring of climate change imposes strict requirements upon observing systems, in particular regarding measurement accuracy and long-term…”
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Altitude misestimation caused by the Vaisala RS80 pressure bias and its impact on meteorological profiles by Inai, Y, Shiotani, M, Fujiwara, M, Hasebe, F, Vömel, H

“…Previous research has found that conventional radiosondes equipped with a traditional pressure sensor can be subject to a pressure bias, particularly in the…”
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Aura Microwave Limb Sounder upper tropospheric and lower stratospheric H2O and relative humidity with respect to ice validation by Read, W. G., Lambert, A., Bacmeister, J., Cofield, R. E., Christensen, L. E., Cuddy, D. T., Daffer, W. H., Drouin, B. J., Fetzer, E., Froidevaux, L., Fuller, R., Herman, R., Jarnot, R. F., Jiang, J. H., Jiang, Y. B., Kelly, K., Knosp, B. W., Kovalenko, L. J., Livesey, N. J., Liu, H.-C., Manney, G. L., Pickett, H. M., Pumphrey, H. C., Rosenlof, K. H., Sabounchi, X., Santee, M. L., Schwartz, M. J., Snyder, W. V., Stek, P. C., Su, H., Takacs, L. L., Thurstans, R. P., Vömel, H., Wagner, P. A., Waters, J. W., Webster, C. R., Weinstock, E. M., Wu, D. L.

“…The validation of version 2.2 (v2.2) H2O measurements from the Earth Observing System (EOS) Microwave Limb Sounder (Aura MLS) on the Aura satellite are…”
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Nitric acid trihydrate nucleation and denitrification in the Arctic stratosphere by Grooß, J.-U, Engel, I, Borrmann, S, Frey, W, Günther, G, Hoyle, C. R, Kivi, R, Luo, B. P, Molleker, S, Peter, T, Pitts, M. C, Schlager, H, Stiller, G, Vömel, H, Walker, K. A, Müller, R

“…Nitric acid trihydrate (NAT) particles in the polar stratosphere have been shown to be responsible for vertical redistribution of reactive nitrogen (NOy)…”
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The AquaVIT-1 intercomparison of atmospheric water vapor measurement techniques by Fahey, D. W, Gao, R.-S, Möhler, O, Saathoff, H, Schiller, C, Ebert, V, Krämer, M, Peter, T, Amarouche, N, Avallone, L. M, Bauer, R, Bozóki, Z, Christensen, L. E, Davis, S. M, Durry, G, Dyroff, C, Herman, R. L, Hunsmann, S, Khaykin, S. M, Mackrodt, P, Meyer, J, Smith, J. B, Spelten, N, Troy, R. F, Vömel, H, Wagner, S, Wienhold, F. G

“…The AquaVIT-1 intercomparison of atmospheric water vapor measurement techniques was conducted at the aerosol and cloud simulation chamber AIDA (Aerosol…”
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Evaluation of UT/LS hygrometer accuracy by intercomparison during the NASA MACPEX mission by Rollins, A. W., Thornberry, T. D., Gao, R. S., Smith, J. B., Sayres, D. S., Sargent, M. R., Schiller, C., Krämer, M., Spelten, N., Hurst, D. F., Jordan, A. F., Hall, E. G., Vömel, H., Diskin, G. S., Podolske, J. R., Christensen, L. E., Rosenlof, K. H., Jensen, E. J., Fahey, D. W.

“…Acquiring accurate measurements of water vapor at the low mixing ratios (< 10 ppm) encountered in the upper troposphere and lower stratosphere (UT/LS) has…”
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Ozone sonde cell current measurements and implications for observations of near-zero ozone concentrations in the tropical upper troposphere by Vömel, H., Diaz, K.

“…Laboratory measurements of the Electrochemical Concentration Cell (ECC) ozone sonde cell current using ozone free air as well as defined amounts of ozone…”
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Arctic stratospheric dehydration – Part 1: Unprecedented observation of vertical redistribution of water by Khaykin, S. M, Engel, I, Vömel, H, Formanyuk, I. M, Kivi, R, Korshunov, L. I, Krämer, M, Lykov, A. D, Meier, S, Naebert, T, Pitts, M. C, Santee, M. L, Spelten, N, Wienhold, F. G, Yushkov, V. A, Peter, T

“…We present high-resolution measurements of water vapour, aerosols and clouds in the Arctic stratosphere in January and February 2010 carried out by in situ…”
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Cold trap dehydration in the Tropical Tropopause Layer characterised by SOWER chilled-mirror hygrometer network data in the Tropical Pacific by Hasebe, F, Inai, Y, Shiotani, M, Fujiwara, M, Vömel, H, Nishi, N, Ogino, S.-Y, Shibata, T, Iwasaki, S, Komala, N, Peter, T, Oltmans, S. J

“…A network of balloon-borne radiosonde observations employing chilled-mirror hygrometers for water and electrochemical concentration cells for ozone has been…”
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High supersaturation inside cirrus in well-developed tropical tropopause layer over Indonesia by Inai, Y., Shibata, T., Fujiwara, M., Hasebe, F., Vömel, H.

“…The relationship between relative humidity and cirrus clouds in the tropical tropopause layer (TTL) is investigated using balloon‐borne cryogenic frostpoint…”
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Validation of Aura Microwave Limb Sounder Ozone by ozonesonde and lidar measurements by Jiang, Y. B., Froidevaux, L., Lambert, A., Livesey, N. J., Read, W. G., Waters, J. W., Bojkov, B., Leblanc, T., McDermid, I. S., Godin-Beekmann, S., Filipiak, M. J., Harwood, R. S., Fuller, R. A., Daffer, W. H., Drouin, B. J., Cofield, R. E., Cuddy, D. T., Jarnot, R. F., Knosp, B. W., Perun, V. S., Schwartz, M. J., Snyder, W. V., Stek, P. C., Thurstans, R. P., Wagner, P. A., Allaart, M., Andersen, S. B., Bodeker, G., Calpini, B., Claude, H., Coetzee, G., Davies, J., De Backer, H., Dier, H., Fujiwara, M., Johnson, B., Kelder, H., Leme, N. P., König-Langlo, G., Kyro, E., Laneve, G., Fook, L. S., Merrill, J., Morris, G., Newchurch, M., Oltmans, S., Parrondos, M. C., Posny, F., Schmidlin, F., Skrivankova, P., Stubi, R., Tarasick, D., Thompson, A., Thouret, V., Viatte, P., Vömel, H., von Der Gathen, P., Yela, M., Zablocki, G.

“…We present validation studies of MLS version 2.2 upper tropospheric and stratospheric ozone profiles using ozonesonde and lidar data as well as climatological…”
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On the variability of ozone in the equatorial eastern Pacific boundary layer by Gómez Martín, J. C., Vömel, H., Hay, T. D., Mahajan, A. S., Ordóñez, C., Parrondo Sempere, M. C., Gil‐Ojeda, M., Saiz‐Lopez, A.

“…Observations of surface ozone (O3) mixing ratios carried out during two ground‐based field campaigns in the Galápagos Islands are reported. The first campaign,…”
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The impact of cirrus clouds on tropical troposphere-to-stratosphere transport by Corti, T., Luo, B. P., Fu, Q., Vömel, H., Peter, T.

“…Although it is well known that air enters the stratosphere preferentially through upwelling in the tropics, the exact mechanisms of troposphere-to-stratosphere…”
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Trends and variability of midlatitude stratospheric water vapour deduced from the re-evaluated Boulder balloon series and HALOE by Scherer, M., Vömel, H., Fueglistaler, S., Oltmans, S. J., Staehelin, J.

“…This paper presents an updated trend analysis of water vapour in the lower midlatitude stratosphere from the Boulder balloon-borne NOAA frostpoint hygrometer…”
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