Search Results - "Willén, U"

Quantifying the clear-sky temperature inversion frequency and strength over the Arctic Ocean during summer and winter seasons from AIRS profiles by Devasthale, A., Willén, U., Karlsson, K.-G., Jones, C. G.

“…Temperature inversions are one of the dominant features of the Arctic atmosphere and play a crucial role in various processes by controlling the transfer of…”
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Multi-technique comparisons of 10 years of wet delay estimates on the west coast of Sweden by Ning, T., Haas, R., Elgered, G., Willén, U.

“…We present comparisons of 10-year-long time series of the atmospheric zenith wet delay (ZWD), estimated using the global positioning system (GPS), geodetic…”
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Evaluation of the atmospheric water vapor content in a regional climate model using ground-based GPS measurements by Ning, T., Elgered, G., Willén, U., Johansson, J. M.

“…Ground‐based GPS measurements can provide independent data for the assessment of climate models. We use the atmospheric integrated water vapor (IWV) obtained…”
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European climate in the late twenty-first century: regional simulations with two driving global models and two forcing scenarios by RÄISÄNEN, J, HANSSON, U, ULLERSTIG, A, DÖSCHER, R, GRAHAM, L. P, JONES, C, MEIER, H. E. M, SAMUELSSON, P, WILLEN, U

“…A basic analysis is presented for a series of regional climate change simulations that were conducted by the Swedish Rossby Centre and contribute to the…”
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CLOUDNET: Continuous Evaluation of Cloud Profiles in Seven Operational Models Using Ground-Based Observations by Illingworth, A. J., Hogan, R. J., O’Connor, E. J., Bouniol, D., Brooks, M. E., Delanoë, J., Donovan, D. P., Eastment, J. D., Gaussiat, N., Goddard, J. W. F., Haeffelin, M., Baltink, H. Klein, Krasnov, O. A., Pelon, J., Piriou, J.-M., Protat, A., Russchenberg, H. W. J., Seifert, A., Tompkins, A. M., van Zadelhoff, G.-J., Vinit, F., Willén, U., Wilson, D. R., Wrench, C. L.

“…The Cloudnet project aims to provide a systematic evaluation of clouds in forecast and climate models by comparing the model output with continuous…”
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A regional climate model for northern Europe : model description and results from the downscaling of two GCM control simulations by RUMMUKAINEN, M, RÄISÄNEN, J, BRINGFELT, B, ULLERSTIG, A, OMSTEDT, A, WILLEN, U, HANSSON, U, JONES, C

“…This work presents a regional climate model, the Rossby Centre regional Atmospheric model (RCA1), recently developed from the High Resolution Limited Area…”
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Multi-technique comparisons of 10 years of wet delay estimates on the west coast of Sweden by Ning, T., Haas, R., Elgered, G., Willén, U.

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THE BALTEX BRIDGE CAMPAIGN: An Integrated Approach for a Better Understanding of Clouds by Crewell, S., Bloemink, H., Feijt, A., García, S. G., Jolivet, D., Krasnov, O. A., Van Lammeren, A., Löhnert, U., Van Meijgaard, E., Meywerk, J., Quante, M., Pfeilsticker, K., Schmidt, S., Scholl, T., Simmer, C., Schröder, M., Trautmann, T., Venema, V., Wendisch, M., Willén, U.

“…Clouds cause uncertainties in the determination of climate sensitivity to either natural or anthropogenic changes. Furthermore, clouds dominate our perception…”
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evaluation of Arctic cloud and radiation processes during the SHEBA year: simulation results from eight Arctic regional climate models by Wyser, K, Jones, C. G, Du, P, Girard, E, Willén, U, Cassano, J, Christensen, J. H, Curry, J. A, Dethloff, K, Haugen, J.-E, Jacob, D, Køltzow, M, Laprise, R, Lynch, A, Pfeifer, S, Rinke, A, Serreze, M, Shaw, M. J, Tjernström, M, Zagar, M

“…Eight atmospheric regional climate models (RCMs) were run for the period September 1997 to October 1998 over the western Arctic Ocean. This period was…”
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Comparing ERA-Interim clouds with satellite observations using a simplified satellite simulator by Stengel, Martin, Schlundt, Cornelia, Stapelberg, Stefan, Sus, Oliver, Eliasson, Salomon, Willén, Ulrika, Meirink, Jan Fokke

“…An evaluation of the ERA-Interim clouds using satellite observations is presented. To facilitate such an evaluation in a proper way, a simplified satellite…”
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A simulator for the CLARA-A2 cloud climate data record and its application to assess EC-Earth polar cloudiness by Eliasson, Salomon, Karlsson, Karl-Göran, Willén, Ulrika

“…This paper describes a new satellite simulator for the CLARA-A2 climate data record (CDR). This simulator takes into account the variable skill in cloud…”
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Cloud property datasets retrieved from AVHRR, MODIS, AATSR and MERIS in the framework of the Cloud_cci project by Stengel, Martin, Stapelberg, Stefan, Sus, Oliver, Schlundt, Cornelia, Poulsen, Caroline, Thomas, Gareth, Christensen, Matthew, Cintia Carbajal Henken, Preusker, Rene, Fischer, Jürgen, Devasthale, Abhay, Willén, Ulrika, Karlsson, Karl-Göran, McGarragh, Gregory R, Proud, Simon, Povey, Adam C, Grainger, Roy G, Meirink, Jan Fokke, Feofilov, Artem, Bennartz, Ralf, Bojanowski, Jedrzej S, Hollmann, Rainer

“…New cloud property datasets based on measurements from the passive imaging satellite sensors AVHRR, MODIS, ATSR2, AATSR and MERIS are presented. Two retrieval…”
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The Cloud_cci simulator v1.0 for the Cloud_cci climate data record and its application to a global and a regional climate model by Eliasson, Salomon, Karlsson, Karl Goran, van Meijgaard, Erik, Meirink, Jan Fokke, Stengel, Martin, Willen, Ulrika

“…The Cloud Climate Change Initiative (Cloud_cci) satellite simulator has been developed to enable comparisons between the Cloud_cci climate data record (CDR)…”
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An intercalibrated dataset of total column water vapour and wet tropospheric correction based on MWR on board ERS-1, ERS-2, and Envisat by Bennartz, Ralf, Höschen, Heidrun, Picard, Bruno, Schröder, Marc, Stengel, Martin, Sus, Oliver, Bojkov, Bojan, Casadio, Stefano, Diedrich, Hannes, Eliasson, Salomon, Fell, Frank, Fischer, Jürgen, Hollmann, Rainer, Preusker, Rene, Willén, Ulrika

“…The microwave radiometers (MWRs) on board the European Remote Sensing Satellites 1 and 2 (ERS-1 and ERS-2) and Envisat provide a continuous time series of…”
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Cloudnet by Illingworth, A. J., Hogan, R. J., O'Connor, E.J., Bouniol, D., Brooks, M. E., Delanoé, J., Donovan, D. P., Eastment, J. D., Gaussiat, N., Goddard, J. W. F., Haeffelin, M., Baltink, H. Klein, Krasnov, O. A., Pelon, J., Piriou, J.-M., Protat, A., Russchenberg, H. W. J., Seifert, A., Tompkins, A. M., van Zadelhoff, G.-J., Vinit, F., Willén, U., Wilson, D. R., Wrench, C. L.

“…The Cloudnet project aims to provide a systematic evaluation of clouds in forecast and climate models by comparing the model output with continuous…”
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EC-Earth: A Seamless Earth-System Prediction Approach in Action by Hazeleger, Wilco, Severijns, Camiel, Semmler, Tido, Ştefănescu, Simona, Yang, Shuting, Wang, Xueli, Wyser, Klaus, Dutra, Emanuel, Baldasano, José M., Bintanja, Richard, Bougeault, Philippe, Caballero, Rodrigo, Ekman, Annica M. L., Christensen, Jens H., van den Hurk, Bart, Jimenez, Pedro, Jones, Colin, Kållberg, Per, Koenigk, Torben, McGrath, Ray, Miranda, Pedro, van Noije, Twan, Palmer, Tim, Parodi, José A., Schmith, Torben, Selten, Frank, Storelvmo, Trude, Sterl, Andreas, Tapamo, Honoré, Vancoppenolle, Martin, Viterbo, Pedro, Willén, Ulrika

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Projected precipitation changes in South America: a dynamical downscaling within CLARIS by Anna A. Sorensson, Claudio G. Menéndez, Romina Ruscica, Peter Alexander, Patrick Samuelsson, Ulrika Willén

“…Responses of precipitation seasonal means and extremes over South America in a downscaling of a climate change scenario are assessed with the Rossby Centre…”
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Assessing model predicted vertical cloud structure and cloud overlap with radar and lidar ceilometer observations for the Baltex Bridge Campaign of CLIWA-NET by Willén, Ulrika, Crewell, Susanne, Baltink, Henk Klein, Sievers, Oliver

“…The cloud vertical distribution and overlap of four large-scale models operating at different horizontal and vertical resolutions have been assessed using…”
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The Rossby Centre Regional Atmospheric Climate Model Part II: Application to the Arctic Climate by Jones, C G, Wyser, K, Ullerstig, A, Willen, U

“…The Rossby Centre regional climate model (RCA2) has been integrated over the Arctic Ocean as part of the international ARCMIP project. Results have been…”
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The Rossby Centre Regional Atmospheric Climate Model Part I: Model Climatology and Performance for the Present Climate over Europe by Jones, C G, Willen, U, Ullerstig, A, Hansson, U

“…The Rossby Centre Atmospheric Regional Climate Model (RCA2) is described and simulation results, for the present climate over Europe, are evaluated against…”
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