Application of climatic indices to analyse viticultural suitability in Extremadura,south-western Spain     

Francisco J. Moral  Francisco J. Rebollo  Luis L. Paniagua  Abelardo García  Enrique Martínez de Salazar 《Theoretical and Applied Climatology》2016,123(1-2):277-289

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Fuel moisture sensitivity to temperature and precipitation: climate change implications   总被引：1，自引：0，他引：1  

M. D. Flannigan  B. M. Wotton  G. A. Marshall  W. J. de Groot  J. Johnston  N. Jurko  A. S. Cantin 《Climatic change》2016,134(1-2):59-71

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On the Space-Time Structure of Sheared Turbulence     

Martin de Maré  Jakob Mann 《Boundary-Layer Meteorology》2016,158(3):453-471

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Comparison of Estimated Atmospheric Boundary Layer Mixing Height in the Arctic and Southern Great Plains under Statically Stable Conditions: Experimental and Numerical Aspects   总被引：1，自引：0，他引：1  

A.A. Aliabadi  R.M. Staebler  J. de Grandpré  A. Zadra  P.A. Vaillancourt 《大气与海洋》2016,54(1):60-74

The atmospheric boundary layer mixing height (MH) is an important bulk parameter in air quality (AQ) modelling. Formulating this parameter under statically stable conditions, such as in the Arctic, has historically been difficult. In an effort to improve AQ modelling capacity in North America, MH is studied in two geographically distinct areas: the Arctic (Barrow, Alaska) and the southern Great Plains (Lamont, Oklahoma). Observational data from the Atmospheric Radiation Measurement program, Climate Research Facility and numerical weather forecasting data from Environment Canada's Regional Global Environmental Multiscale (GEM15) model have been used in order to examine the suitability of available parameterizations for MH under statically stable conditions and also to compare the level of agreement between observed and modelled MH. The analysis period is 1 October 2011 to 1 October 2012. The observations alone suggest that profile methods are preferred over surface methods in defining MH under statically stable conditions. Surface methods exhibit poorer comparison statistics with observations than profile methods. In addition, the fitted constants for surface methods are site-dependent, precluding their applicability for modelling under general conditions. The comparison of observations and GEM15 MH suggests that although the agreement is acceptable in Lamont, the default model surface method contributes to a consistent overprediction of MH in Barrow in all seasons. An alternative profile method for MH is suggested based on the bulk Richardson number. This method is shown to reduce the model bias in Barrow by a factor of two without affecting model performance in Lamont.  相似文献   

Seasonal influence of the sea surface temperature on the low atmospheric circulation and precipitation in the eastern equatorial Atlantic     

Rémi Meynadier  Gaëlle de Coëtlogon  Marion Leduc-Leballeur  Laurence Eymard  Serge Janicot 《Climate Dynamics》2016,47(3-4):1127-1142

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goGPS: open-source MATLAB software     

Herrera  Antonio M.  Suhandri  Hendy F.  Realini  Eugenio  Reguzzoni  Mirko  de Lacy  M. Clara 《GPS Solutions》2016,20(3):595-603

GPS Solutions - goGPS is a positioning software application designed to process single-frequency code and phase observations for absolute or relative positioning. Published under a free and...  相似文献   

Ionospheric tomography using GNSS: multiplicative algebraic reconstruction technique applied to the area of Brazil     

Fabricio dos Santos Prol  Paulo de Oliveira Camargo 《GPS Solutions》2016,20(4):807-814

Experimental analysis was performed using multiplicative algebraic reconstruction technique (MART) to map the ionosphere over Brazil. Code and phase observations from the global navigation satellite system (GNSS) together with the international reference ionosphere (IRI) enabled the estimation of ionospheric profiles and total electron content (TEC) over the entire region. Twenty-four days of data collected from existing ground-based GNSS receivers during the recent solar maximum period were used to analyze the performance of the MART algorithm. The results were compared with four ionosondes. It was demonstrated that MART estimated the electron density peak with the same degree of accuracy as the IRI model in regions with appropriate geometrical coverage by GNSS receivers for tomographic reconstruction. In addition, the slant TEC, as estimated with MART, presented lower root-mean-square error than the TEC calculated by ionospheric maps available from the International GNSS Service (IGS). Furthermore, the daily variations of the ionosphere were better represented with the algebraic techniques, compared to the IRI model and IGS maps, enabling a correlation of the elevation of the ionosphere at higher altitudes with the equatorial ionization anomaly intensification. The tomographic representations also enabled the detection of high vertical gradients at the same instants in which ionospheric irregularities were evident.  相似文献   

Annual Business Meeting Kansas City,April 25, 1972     

Harm J. de Blij 《The Professional geographer》1972,24(4):342-344

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Association Affairs     

Harm J. de Blij 《The Professional geographer》1975,27(1):145-149

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Association Affairs     

Harm J. de Blij 《The Professional geographer》1975,27(2):270-276

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