Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Willi Schmid"'
Publikováno v:
Meteorologische Zeitschrift, Vol 10, Iss 2, Pp 131-140 (2001)
Two different concepts for noise filtering in a DOPPLER radar wind field retrieval are compared. The first technique is a smoothing on the raw radar data. The second method uses a smoothness constraint within a variational technique in which a model
Externí odkaz:
https://doaj.org/article/c78ab12adecf4f668d89e4b0449f98cc
Publikováno v:
Meteorologische Zeitschrift, Vol 4, Iss 5, Pp 187-195 (1995)
Das Ziel dieser Untersuchung ist die Erkennung und Vorhersage von Hagel mit Hilfe von Meteosat-Daten. Als Meteosat-Daten werden routinemäßig erhobene Satellitenbilder im sichtbaren und infraroten Bereich verwendet. Hagel wird als solcher definiert,
Externí odkaz:
https://doaj.org/article/a2b7c76474564c539bd6be7836a84f6b
Publikováno v:
Atmospheric Research. 94:400-408
A few years ago, we identified a deep convective transport mechanism, of water vapor through the tropopause, namely, storm top gravity wave breaking, such that tropospheric water substance can be injected into the lower stratosphere via this pathway.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94389ad1c2176cfdc0e2a56bb44e3e46
https://doi.org/10.1016/j.atmosres.2009.06.018
https://doi.org/10.1016/j.atmosres.2009.06.018
Autor:
Willi Schmid, Marc Wüest
Publikováno v:
Atmospheric Research. 77:347-353
Short-term risk forecasts of point precipitation are obtained with COTREC/RainCast, a technique for extrapolation of radar images. The risk forecasts are updated every 5 min for the next 0–2 h. Risk levels are defined for moderate, heavy and extrem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1530941b98794b8e150c902d09f4aa0
https://doi.org/10.1016/j.atmosres.2004.10.012
https://doi.org/10.1016/j.atmosres.2004.10.012
Autor:
Tobias Grimbacher, Willi Schmid
Publikováno v:
Atmospheric Research. 77:378-387
Freezing of rainwater on a surface is often caused by nocturnal clearing after precipitation, which goes along with radiative cooling. Forecasting cloudiness, and especially the risk of clearing, on a scale of 1 to 3 h is of interest in the domains o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::058a2a61406d18921d668fdc12775c42
https://doi.org/10.1016/j.atmosres.2004.10.010
https://doi.org/10.1016/j.atmosres.2004.10.010
Publikováno v:
Meteorologische Zeitschrift, Vol 10, Iss 2, Pp 131-140 (2001)
Two different concepts for noise filtering in a DOPPLER radar wind field retrieval are compared. The first technique is a smoothing on the raw radar data. The second method uses a smoothness constraint within a variational technique in which a model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::528a633acd9cd17b0be56e98976fa510
https://doi.org/10.1127/0941-2948/2001/0010-0131
https://doi.org/10.1127/0941-2948/2001/0010-0131
Publikováno v:
Monthly Weather Review. 128:192-207
A severe bow-echo storm over northern Switzerland is investigated. Wind damage occurred along a track 15 km long and some 100 m wide. Damage data, meteorological data from a ground micronet, and Doppler radar data are analyzed. Volume-scan radar data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08cf3c6e97e349cdf15d5ae0de36ced9
https://doi.org/10.1175/1520-0493(2000)128<0192:tooswi>2.0.co
https://doi.org/10.1175/1520-0493(2000)128<0192:tooswi>2.0.co
Publikováno v:
Weather and Forecasting. 14:758-770
Northern Switzerland is characterized by a plateau (Swiss Mittelland) between two parallel southwest–northeast-running mountain chains: the Alps to the southeast of the plateau and the Jura to its northwest. Under the same large-scale conditions, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e1d3692eff42d850e02cfa725938387
https://doi.org/10.1175/1520-0434(1999)014<0758:swadot>2.0.co
https://doi.org/10.1175/1520-0434(1999)014<0758:swadot>2.0.co
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 16:379-387
This paper deals with the ability of a vertically pointing, FM–CW Doppler radar to measure quantitatively raindrop size distributions and rainfall intensity. The wavelength of the radar is 12.5 mm (K band). To improve estimates of the rainfall inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81ba399f5406abed4074a189eca0e905
https://doi.org/10.1175/1520-0426(1999)016<0379:otpoal>2.0.co
https://doi.org/10.1175/1520-0426(1999)016<0379:otpoal>2.0.co
Publikováno v:
Weather and Forecasting. 12:108-125
The preconvective environment on thunderstorm days in Switzerland north of the Alps has been investigated during a 5-yr period (1985–89). Thermodynamic and kinematic parameters calculated from the radiosounding in Payerne (started at 0000 and 1200
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::412d10f336e0ec594266fca44c00ae75
https://doi.org/10.1175/1520-0434(1997)012<0108:cotand>2.0.co
https://doi.org/10.1175/1520-0434(1997)012<0108:cotand>2.0.co