opportunità di lavoro
Posizione PhD all’università di Vienna

Segnaliamo che il Dipartimento di Geofisica dell’università di Vienna offre una posizione PhD (“pre-dottorato”) sulla “Assimilazione di osservazioni satellitari affette da nuvolosità sul modello di previsione convection-permitting AROME del Servio Meteorologico Austriaco ZAMG”.

Qui di seguito il testo del bando (in inglese):

The Department of Meteorology and Geophysics of the University of Vienna
offers a PhD (“prae-doctoral”) position on the “Assimilation of
cloud-affected satellite observations in the convection-permitting
numerical weather prediction model AROME of the Austrian Weather Service
ZAMG”.

The planned starting date is 1 November 2022. The announcement is made
for three years, whereby the employment relationship is initially
limited to 1.5 years and is automatically extended to a total of three
years, unless the employer submits a declaration of non-renewal after a
maximum of 12 months.

The position will be embedded in the research group of Prof. Martin
Weissmann
(https://img.univie.ac.at/en/research/nwp-and-data-assimilation/) and
will be part of the Vienna Network for Atmospheric Research (VINAR,
https://vinar.univie.ac.at/), a collaboration between the University of
Vienna and the Austrian National Weather Service ZAMG (Zentralanstalt
für Meteorologie und Geodynamik). The student will have access to data
and models used at ZAMG and the research will be conducted in close
collaboration with ZAMG.

The PhD student will investigate the potential of the direct
assimilation of cloud-affected satellite radiance observations in
visible and water vapour sensitive infrared channels in a
state-of-the-art convection-permitting limited-area numerical weather
prediction (NWP) model. For the first time, the assimilation of visible
and infrared observations will be combined in a variational data
assimilation (DA) scheme and in a limited-area model over comparably
complex terrain (the Alps) to quantify their potential for improving
short-range (up to two days lead time) high-resolution NWP forecasts
based on observing system experiments.

Extent of Employment: 30 hours/week (75%)
Job grading in accordance with collective bargaining agreement: §48
VwGr. B1
(https://personalwesen.univie.ac.at/en/jobs-recruiting/job-center/salary-scheme/
)

Essential qualifications:

·       Master (or equivalent) degree in Meteorology/Atmospheric
Sciences or a related subject

·       Programming experience

·       Good verbal and written communication skills including fluency
in English

Desirable additional qualifications:

·       Experience with numerical modelling

·       Knowledge of data assimilation

·       Python and Fortran programming

·       Familiarity with Linux/UNIX environments

·       Familiarity with high-performance computing

If you’re interested, please send your CV, the names of two reference
persons, and a letter stating why you are interested in the above
research topic to our secretariat (img-wien@univie.ac.at) until 10
September 2022.

The University of Vienna aims at increasing the proportion of women at
all employment levels and therefore encourages applications by qualified
women.
anteprima-solstizio-estate
Solstizio d’estate 2022

Alle 11:13 (ora italiana) è avvenuto il solstizio: l’estate astronomica ha preso il posto della primavera. Meraviglioso, come sempre, è lo scatto che ci arriva dal satellite geostazionario Meteosat-11.


solstizio-estate-2022-meteosat
©Eumetsat

L’immagine è di questa mattina delle ore 06:00 UTC (ore 8:00 locali). Si nota chiaramente come il terminatore, ovvero quella “linea immaginaria” che delimita la parte di Terra illuminata (giorno) da quella ancora al buio (notte), si sia portato all’inclinazione massima di 23° 27′, pari all’inclinazione dell’asse terrestre rispetto al piano dell’eclittica. I raggi del Sole, inoltre, cadono perpendicolari al Tropico del Cancro.

Infine, oggi in Italia si osserveranno, mediamente, circa 15 ore di luce, qualche manciata di minuti in meno al sud, qualche minuto in più al nord. Questa differenza è dovuta al fatto che il nostro stivale è esteso in latitudine e proprio a latitudini maggiori, come si evince altresì dallo scatto in allegato, risulta altrettanto differente la durata tra notte e giorno.