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Neueste Artikel (Zeitschrifteninhaltsverzeichnisse / in press) (13)
Copernicus (13)
American Association for the Advancement of Science (AAAS)
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2010-2014 (13)
Advances in Science and Research. 2010; 4(1): 115-120. Published 2010 Nov 26. doi: 10.5194/asr-4-115-2010. (1)
Advances in Science and Research. 2010; 4(1): 5-7. Published 2010 Feb 19. doi: 10.5194/asr-4-5-2010. (1)
Advances in Science and Research. 2011; 6(1): 219-226. Published 2011 Aug 16. doi: 10.5194/asr-6-219-2011. (1)
Advances in Science and Research. 2011; 6(1): 227-231. Published 2011 Aug 22. doi: 10.5194/asr-6-227-2011. (1)
Advances in Science and Research. 2011; 6(1): 251-259. Published 2011 Sep 15. doi: 10.5194/asr-6-251-2011. (1)
Advances in Science and Research. 2011; 6(1): 7-11. Published 2011 Jan 31. doi: 10.5194/asr-6-7-2011. (1)
Advances in Science and Research. 2011; 7(1): 21-36. Published 2011 Apr 26. doi: 10.5194/asr-7-21-2011. (1)
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A vector auto-regressive model for onshore and offshore wind synthesis incorporating meteorological model information (2014)

Hill, D. ; Bell, K. R. W. ; McMillan, D. ; [weitere]

Copernicus

In: Advances in Science and Research. 2014; 11(1): 35-39. Published 2014 May 14. doi: 10.5194/asr-11-35-2014.

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Publikationsdatum: 2014-05-14

Beschreibung: The growth of wind power production in the electricity portfolio is striving to meet ambitious targets set, for example by the EU, to reduce greenhouse gas emissions by 20% by 2020. Huge investments are now being made in new offshore wind farms around UK coastal waters that will have a major impact on the GB electrical supply. Representations of the UK wind field in syntheses which capture the inherent structure and correlations between different locations including offshore sites are required. Here, Vector Auto-Regressive (VAR) models are presented and extended in a novel way to incorporate offshore time series from a pan-European meteorological model called COSMO, with onshore wind speeds from the MIDAS dataset provided by the British Atmospheric Data Centre. Forecasting ability onshore is shown to be improved with the inclusion of the offshore sites with improvements of up to 25% in RMS error at 6 h ahead. In addition, the VAR model is used to synthesise time series of wind at each offshore site, which are then used to estimate wind farm capacity factors at the sites in question. These are then compared with estimates of capacity factors derived from the work of Hawkins et al. (2011). A good degree of agreement is established indicating that this synthesis tool should be useful in power system impact studies.

Print ISSN: 1992-0628

Digitale ISSN: 1992-0636

Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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Digital Climate Atlas of the Carpathian Region (2013)

Antolović, I. ; Mihajlović, V. ; Rančić, D. ; [weitere]

Copernicus

In: Advances in Science and Research. 2013; 10(1): 107-111. Published 2013 Sep 09. doi: 10.5194/asr-10-107-2013.

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Publikationsdatum: 2013-09-09

Beschreibung: The main goal of the CARPATCLIM (Climate of the Carpathian Region) project is to construct the gridded climatological database for the region in a daily temporal resolution for the period 1961–2010 by using 0.1° spatial resolution. The solution of this requirement as well as one of the final products of the CARPATCLIM project is a Digital Climate Atlas which is designed as the main entry point for all the gridded data and maps generated during the project, together with metadata for all data sets (original data as well as data created during the project). With respect to the INSPIRE (Infrastructure for Spatial Information in the European Community) directive, the Digital Climate Atlas is developed as a rich Web GIS (Geographic Information System) application based on modern Web standards offering all necessary tools for climate data visualization and extraction. Another important product of the CARPATCLIM project is the Metadata Catalog which is designed as a tool for searching of climate metadata by various parameters (i.e. period, variable, region etc.).

Print ISSN: 1992-0628

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Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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MEGAPOLI: concept of multi-scale modelling of megacity impact on air quality and climate (2010)

Baklanov, A. ; Lawrence, M. ; Pandis, S. ; [weitere]

Copernicus

In: Advances in Science and Research. 2010; 4(1): 115-120. Published 2010 Nov 26. doi: 10.5194/asr-4-115-2010.

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Publikationsdatum: 2010-11-26

Beschreibung: The EU FP7 Project MEGAPOLI: "Megacities: Emissions, urban, regional and Global Atmospheric POLlution and climate effects, and Integrated tools for assessment and mitigation" (http://megapoli.info) brings together leading European research groups, state-of-the-art scientific tools and key players from non-European countries to investigate the interactions among megacities, air quality and climate. MEGAPOLI bridges the spatial and temporal scales that connect local emissions, air quality and weather with global atmospheric chemistry and climate. The suggested concept of multi-scale integrated modelling of megacity impact on air quality and climate and vice versa is discussed in the paper. It requires considering different spatial and temporal dimensions: time scales from seconds and hours (to understand the interaction mechanisms) up to years and decades (to consider the climate effects); spatial resolutions: with model down- and up-scaling from street- to global-scale; and two-way interactions between meteorological and chemical processes.

Print ISSN: 1992-0628

Digitale ISSN: 1992-0636

Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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Newest developments of ACMANT (2011)

Domonkos, P. ; Poza, R. ; Efthymiadis, D.

Copernicus

In: Advances in Science and Research. 2011; 6(1): 7-11. Published 2011 Jan 31. doi: 10.5194/asr-6-7-2011.

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Publikationsdatum: 2011-01-31

Beschreibung: The seasonal cycle of radiation intensity often causes a marked seasonal cycle in the inhomogeneities (IHs) of observed temperature time series, since a substantial portion of them have direct or indirect connection to radiation changes in the micro-environment of the thermometer. Therefore the magnitudes of temperature IHs tend to be larger in summer than in winter. A new homogenisation method, the Adapted Caussinus – Mestre Algorithm for Networks of Temperature series (ACMANT) has recently been developed which treats appropriately the seasonal changes of IH-sizes in temperature time series. The performance of ACMANT was proved to be among the best methods (together with PRODIGE and MASH) in the efficiency test procedure of COST ES0601 project. A further improved version of the ACMANT is described in this paper. In the new version the ANOVA procedure is applied for correcting inhomogeneities, and with this change the iterations applied in the earlier version have become unnecessary. Some other modifications have also been made, from which the most important one is the new way for estimating the timings of IHs. With these modifications the efficiency of the ACMANT has become even higher, therefore its use is strongly recommended when networks of monthly temperature series from mid- or high geographical latitudes are subjected to homogenisation. The paper presents the main properties and the operation of the new ACMANT.

Print ISSN: 1992-0628

Digitale ISSN: 1992-0636

Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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Observability of planetary waves and their predictability in the ECMWF H500 forecasts (2010)

Sonechkin, D. M.

Copernicus

In: Advances in Science and Research. 2010; 4(1): 5-7. Published 2010 Feb 19. doi: 10.5194/asr-4-5-2010.

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Publikationsdatum: 2010-02-19

Beschreibung: The problem of a hard contradiction between limited possibilities of meteorological observations and uncontrolled complication of the present-day weather forecasting models, and its consequences for the planetary wave predictability are considered with examples from the ECMWF short- and medium-range H500 forecasts for the Northern Hemisphere. A supposition is voiced that this problem adds difficulties to the weekly predictability limit overcoming.

Print ISSN: 1992-0628

Digitale ISSN: 1992-0636

Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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Development and testing of homogenisation methods: moving parameter experiments with ACMANT (2013)

Domonkos, P. ; Efthymiadis, D.

Copernicus

In: Advances in Science and Research. 2013; 10(1): 43-50. Published 2013 Mar 18. doi: 10.5194/asr-10-43-2013.

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Publikationsdatum: 2013-03-18

Beschreibung: During the European project COST ES0601 (HOME) a new homogenisation method, ACMANT has been developed for the automatic homogenisation of monthly temperatures. ACMANT turned out to be one of the best performing methods during the blind test experiments of HOME. The methodological development of ACMANT has been continued since then, and nowadays ACMANT is likely the best homogenisation method for large and spatially dense temperature datasets. Ensemble moving parameter experiments have been done to obtain more information about the performance of ACMANT. The HOME Benchmark was used as test dataset, thus the results of the latest experiments with ACMANT are comparable with the performance of the other homogenisation methods participated in HOME. The results indicate that the performance of ACMANT is generally not sensitive to its parameterisation, i.e. the change of the performance is generally small for quite a wide range of each parameter. The presented methodology of moving parameter experiments provides results in a fast and easy to evaluate form.

Print ISSN: 1992-0628

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Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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Statistical analysis of inter-arrival times of rainfall events for Italian Sub-Alpine and Mediterranean areas (2012)

Agnese, C. ; Baiamonte, G. ; Cammalleri, C. ; [weitere]

Copernicus

In: Advances in Science and Research. 2012; 8(1): 171-177. Published 2012 Sep 17. doi: 10.5194/asr-8-171-2012.

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Publikationsdatum: 2012-09-17

Beschreibung: In this work a set of time-series of inter-arrival times of rainfall events, at daily scale, was analysed, with the aim to verify the issue of increasing duration of dry periods. The set consists of 12 time-series recorded at rain gauges in 1926–2005, six of them belong to an Italian Sub-Alpine area (Piedmont) and six to a Mediterranean one (Sicily). In order to overcome the problem related to limited sample size for high values of inter-arrival times, the discrete probability polylog-series distribution was used to fit the empirical data from partial (20 yr) time-series. Moreover, a simple qualitative trend analysis was applied to some high quantiles of inter-arrival times as well as to the average extent of rain clusters. The preliminary analysis seems to confirm the issue of increasing duration of dry periods for both environments, which is limited to the ''cold'' season.

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Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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First outcomes from the CNR-ISAC monthly forecasting system (2012)

Mastrangelo, D. ; Malguzzi, P. ; Rendina, C. ; [weitere]

Copernicus

In: Advances in Science and Research. 2012; 8(1): 77-82. Published 2012 Apr 16. doi: 10.5194/asr-8-77-2012.

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Publikationsdatum: 2012-04-16

Beschreibung: A monthly probabilistic forecasting system is experimentally operated at the ISAC institute of the National Council of Research of Italy. The forecasting system is based on GLOBO, an atmospheric general circulation model developed at the same institute. The model is presently run on a monthly basis to produce an ensemble of 32 forecasts initialized with GFS-NCEP perturbed analyses. Reforecasts, initialized with ECMWF ERA-Interim reanalyses of the 1989–2009 period, are also produced to determine modelled climatology of the month to forecast. The modelled monthly climatology is then used to calibrate the ensemble forecast of daily precipitation, geopotential height and temperature on standard pressure levels. In this work, we present the forecasting system and a preliminary evaluation of the model systematic and forecast errors in terms of non-probabilistic scores of the 500-hPa geopotential height. Results show that the proposed forecasting system outperforms the climatology in the first two weeks of integrations. The adopted calibration based on weighted bias correction is found to reduce the systematic and the forecast errors.

Print ISSN: 1992-0628

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Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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The role of nocturnal Low-Level-Jet in nocturnal convection and rainfalls in the west Mediterranean coast: the episode of 14 December 2010 in northeast of Iberian Peninsula (2012)

Mazón, J. ; Pino, D.

Copernicus

In: Advances in Science and Research. 2012; 8(1): 27-31. Published 2012 Mar 19. doi: 10.5194/asr-8-27-2012.

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Publikationsdatum: 2012-03-19

Beschreibung: The night of 14 December 2010 radar images of the Spanish Weather Agency recorded a large rain band that moved offshore at the Northeast coast of the Iberian Peninsula. MM5 mesoscale model is used to study the atmospheric dynamics during that day. A Nocturnal Low Level Jet (NLLJ) generated by an inertial oscillation that brings cold air to the coast from inland has been simulated in the area. This cold air interacts with a warmer air mass some kilometers offshore. According to the MM5 mesoscale model simulation, the cold air enhances upward movements of the warm air producing condensation. Additionally, there is a return flow to the coastline at 600–900 m high. This warm air mass interacts again with the cold air moving downslope, also producing condensation inland. The simulation for the night before this episode shows large drainage winds with a NLLJ profile, but no condensation areas. The night after the 14th the simulation also shows drainage winds but without a NLLJ profile. However, an offshore convergence area was produced with a returned flow, but no condensation inland occurred. This fact is in agreement with radar observations which reported no precipitation for these two days. Consequently, NLLJ in combination with a synoptic wind over the sea could enhance condensation and eventually precipitation rates in the Mediterranean Iberian coast.

Print ISSN: 1992-0628

Digitale ISSN: 1992-0636

Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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A data portal for regional climatic trend analysis in a Peruvian High Andes region (2011)

Schwarb, M. ; Acuña, D. ; Konzelmann, Th. ; [weitere]

Copernicus

In: Advances in Science and Research. 2011; 6(1): 219-226. Published 2011 Aug 16. doi: 10.5194/asr-6-219-2011.

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Publikationsdatum: 2011-08-16

Beschreibung: In the frame of a Swiss-Peruvian climate change adaptation initiative (PACC), operational and historical data series of more than 100 stations of the Peruvian Meteorological and Hydrological Service (SENAMHI) are now accessible in a dedicated data portal. The data portal allows for example the comparison of data series or the interpolation of spatial fields as well as download of data in various data formats. It is thus a valuable tool supporting the process of data homogenisation and generation of a regional baseline climatology for a sound development of adequate climate change adaptation measures. The procedure to homogenize air-temperature and precipitation data series near Cusco city is outlined and followed by an exemplary trend analysis. Local air temperature trends are found to be in line with global mean trends.

Print ISSN: 1992-0628

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Thema: Allgemeine Naturwissenschaft

Publiziert von Copernicus im Namen von European Meteorological Society.

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