The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model Results
In this paper we present one year of meteorological and flux measurements obtained near Ny-Ålesund, Spitsbergen. Fluxes are derived by the eddy covariance method and by a hydrodynamic model approach (HMA) as well. Both methods are compared and analyzed with respect to season and mean wind direction....
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2015/852108 |
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| author | Georg Jocher Alexander Schulz Christoph Ritter Roland Neuber Klaus Dethloff Thomas Foken |
| author_facet | Georg Jocher Alexander Schulz Christoph Ritter Roland Neuber Klaus Dethloff Thomas Foken |
| author_sort | Georg Jocher |
| collection | DOAJ |
| description | In this paper we present one year of meteorological and flux measurements obtained near Ny-Ålesund, Spitsbergen. Fluxes are derived by the eddy covariance method and by a hydrodynamic model approach (HMA) as well. Both methods are compared and analyzed with respect to season and mean wind direction. Concerning the wind field we find a clear distinction between 3 prevailing regimes (which have influence on the flux behavior) mainly caused by the topography at the measurement site. Concerning the fluxes we find a good agreement between the HMA and the eddy covariance method in cases of turbulent mixing in summer but deviations at stable conditions, when the HMA almost always shows negative fluxes. Part of the deviation is based on a dependence of HMA fluxes on friction velocity and the influence of the molecular boundary layer. Moreover, the flagging system of the eddy covariance software package TK3 is briefly revised. A new quality criterion for the use of fluxes obtained by the eddy covariance method, which is based on integral turbulence characteristics, is proposed. |
| format | Article |
| id | doaj-art-88bd5f1d6e5341ffad1ce4f4afa951f1 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-88bd5f1d6e5341ffad1ce4f4afa951f12025-08-20T03:38:05ZengWileyAdvances in Meteorology1687-93091687-93172015-01-01201510.1155/2015/852108852108The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model ResultsGeorg Jocher0Alexander Schulz1Christoph Ritter2Roland Neuber3Klaus Dethloff4Thomas Foken5Alfred Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, GermanyAlfred Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, GermanyAlfred Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, GermanyAlfred Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, GermanyAlfred Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, GermanyDepartment of Micrometeorology, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, GermanyIn this paper we present one year of meteorological and flux measurements obtained near Ny-Ålesund, Spitsbergen. Fluxes are derived by the eddy covariance method and by a hydrodynamic model approach (HMA) as well. Both methods are compared and analyzed with respect to season and mean wind direction. Concerning the wind field we find a clear distinction between 3 prevailing regimes (which have influence on the flux behavior) mainly caused by the topography at the measurement site. Concerning the fluxes we find a good agreement between the HMA and the eddy covariance method in cases of turbulent mixing in summer but deviations at stable conditions, when the HMA almost always shows negative fluxes. Part of the deviation is based on a dependence of HMA fluxes on friction velocity and the influence of the molecular boundary layer. Moreover, the flagging system of the eddy covariance software package TK3 is briefly revised. A new quality criterion for the use of fluxes obtained by the eddy covariance method, which is based on integral turbulence characteristics, is proposed.http://dx.doi.org/10.1155/2015/852108 |
| spellingShingle | Georg Jocher Alexander Schulz Christoph Ritter Roland Neuber Klaus Dethloff Thomas Foken The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model Results Advances in Meteorology |
| title | The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model Results |
| title_full | The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model Results |
| title_fullStr | The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model Results |
| title_full_unstemmed | The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model Results |
| title_short | The Sensible Heat Flux in the Course of the Year at Ny-Ålesund, Svalbard: Characteristics of Eddy Covariance Data and Corresponding Model Results |
| title_sort | sensible heat flux in the course of the year at ny alesund svalbard characteristics of eddy covariance data and corresponding model results |
| url | http://dx.doi.org/10.1155/2015/852108 |
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