Objective mesoscale analysis of daily extreme temperatures in the Po Valley of northern Italy

Carlo Cacciamani; Tiziana Paccagnella; Sandro Nanni; Stefano Tibaldi

doi:10.3402/tellusa.v41i4.11843

Objective mesoscale analysis of daily extreme temperatures in the Po Valley of northern Italy

Tellus

Volume 41 (1989): Issue 4

By: Carlo Cacciamani, Tiziana Paccagnella, Sandro Nanni and Stefano Tibaldi

Open Access

|Jan 1989

Abstract

In this paper, an optimum interpolation scheme is applied to produce an objective daily mesoscale analysis of minimum and maximum temperatures in the Emilia Romagna region of northern Italy (essentially the Po Valley). This system is operational at the Regional Meteorological Service. The study of the autocorrelation structures of these fields shows the strong anisotropy induced by the morphological characteristics of the region, and particularly by the Apennines and the Adriatic Sea. To evaluate the structure functions, a data set of the National Hydrological Service has been used. The data, from 1961 to 1977, are available in about 40 stations covering the region fairly uniformly. The analysis scheme is univariate and the structure functions have been evaluated separately for every month of the year.

References

Buell , C. E. and Seaman , R. S . 1983 . The “scissors” effect: anisotropic and ageostrophic influences on wind correlation coefficients . Aust. Met. Mag . 31 , 77 – 83 .
Search in Google Scholar Back to article
Cats , G. J . 1980 . Analysis of surface wind and its gradient in a mesoscale wind observation network . Mon. Wea. Rev . 108 , 1100 – 1107 .
Search in Google Scholar Back to article
Creutin , J. D. and Obled , C . 1982 . Objective analysis and mapping techniques for rainfall fields . Wat. Res. Rev . 18 , 413 – 431 .
Search in Google Scholar Back to article
Eddy , A . 1964 . The objective analysis of horizontal wind divergence field . Q. J. Roy. Met. Soc . 90 , 440 – 490 .
Search in Google Scholar Back to article
Eliassen , A . 1954 . Provisional report on calculation of spatial covariance and autocorrelation of pressure field. Inst. Weath. and Climat. Res., Acad. Sci., Oslo, Report no. 5 .
Search in Google Scholar Back to article
Gandin , L. S . 1965 . Objective analysis of meteorological fields . Israel Program for Scientific Translation , Jerusalem .
Search in Google Scholar Back to article
Gustafsson , N . 1985 . Development of mesoscale analysis scheme for nowcasting and very short range forecasting . Proceedings from Workshop on High Resolution Analysis , ECMWF, UK , 24 – 26 .
Search in Google Scholar Back to article
Schlatter , T. W . 1975 . Some experiments with a multivariate statistical objective analysis scheme . Mon. Wea. Rev . 103 , 246 – 257 .
Search in Google Scholar Back to article
Schlatter , T. W. , Branstator , G. W. and Thiel , L. G . 1976 . Testing a global multivariate statistical objec-tive analysis scheme with observed data . Mon. Wea. Rev . 104 , 765 – 783 .
Search in Google Scholar Back to article
Seaman , R. S. and Gauntlett , F. S . 1980 . Directional dependence of zonal and meridional wind correlation coefficients . Aust. Met. Mag . 28 , 217 – 218 .
Search in Google Scholar Back to article
Thiebaux , H. J . 1975 . Experiments with correlation representation for objective analysis . Mon. Wea. Rev . 103 , 617 – 627 .
Search in Google Scholar Back to article
Thiebaux , H. J . 1976 . Anisotropic correlation functions for objective analysis . Mon. Wea. Rev . 104 , 994 – 1002 .
Search in Google Scholar Back to article
Thiebaux , H. J . 1977 . Extending estimation accuracy with anisotropic interpolation . Mon. Wea. Rev . 105 , 691 – 699 .
Search in Google Scholar Back to article

Articles in this issue

DOI: https://doi.org/10.3402/tellusa.v41i4.11843 | Journal eISSN: 3035-9554

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Language: English

Page range: 308 - 318

Submitted on: Dec 23, 1987

Accepted on: Sep 23, 1988

Published on: Jan 1, 1989

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1989 Carlo Cacciamani, Tiziana Paccagnella, Sandro Nanni, Stefano Tibaldi, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 41 (1989): Issue 4