ATMOSPHERE-SEA INTERACTION AND RECENT CLIMATIC CHANGES
Main researcher
: PENZAR, IVAN (36103) Assistants
LISAC, INGA (26034)
GRISOGONO, BRANKO (35580)
JURAS, JOSIP (92026)
PASARIĆ, ZORAN (122685)
ORLIĆ, MIRKO (84292)
ZELENKO, BOGDAN (54671)
ŠINIK, NADEŽDA (47015)
PENZAR, BRANKA (36094)
VOLARIĆ, BOŽENA (52924)
KLAIĆ, ZVJEZDANA (26374)
MARKI, ANTUN (180825)
GRUBIŠIĆ, VANDA (164991)
MARKI, ANTUN (180825)
PASARIĆ, MIROSLAVA (187581)
Type of research: basic Duration from: 01/01/91. to 12/31/95. Papers on project (total): 104
Papers on project quoted in Current Contents: 13
Institution name: Prirodoslovno-matematički fakultet, Prirodoslovni odjeli, Zagreb (119) Department/Institute: Andrija Mohorovičić Geophysical Institute, Departement of Geophysics, Faculty of Science, University of Zagreb Address: Horvatovac bb City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)41-420-222
Phone: 385 (0)41-420-114
Phone: 385 (0)41-420-214
Phone: 385 (0)41-420-314
Fax: 385 (0)41-432-462
E-mail: orlic@olimp.irb.hr
Summary: Climatic fluctuations in this part of Europe were
investigated on the basis of 130-year series of meteorological
measurements in Zagreb. The temperature fluctuations due to the cloudiness
feedback were studied by means of a local climatic model. Besides, a
particular concern was given to the nearground and total ozone contents
in the atmosphere above Zagreb and also to potential values of the solar
energy input in Croatia together with meteorological conditions convenient
for its use. Influence of the atmosphere on the sea was analysed on
various spatial and temporal scales - planetary, synoptic, mesoscale.
Climatic fluctuations are of a special importance here, as they brought
about the exceptionally low sea levels in winter 1988/89. During the event
the Adriatic did not follow the inverted barometer law, most probably due
to the synchronous influence of various factors (air pressure, wind) on
the sea. It was noticed that, although climatic fluctuations became
obvious through response of the sea to the atmospheric forcing,
atmospheric perturbation resulted from the previous forcing by the sea. As
an introduction into the latter process in the Adriatic area, annual and
interannual variability of sea surface temperature was analysed.
Keywords: Atmosphere-sea interaction, climatological normals, climatic fluctuations, climatic trend, tropospheric ozone, solar energy, air and sea surface temperature, cloudiness, rainfall, wind and currents, sea level, analytical and numerical models.
Research goals: The idea is to establish the existing trends of
climatic fluctuations in this part of Europe. The goal may be achieved by
the formulation of such a deterministic climatic model which is sensitive
to planetary climatic fluctuations. Such model has been evaluated on the
Austrian and Swiss stations data and it has been shown that cloudiness
influenced the temperature circumstances in the "greenhouse effect" more
than anthropogenic effects. Long-term series of the climatological
elements in Zagreb are submited to homogeinity and variability tests to
make a basis of an estimation of the data relative homogeinity for other
stations in Croatia. The investigation of the solar radiation potential
values and relevant meteorological conditions for the energy collection
aims to help the solar energy exploitation in Croatia. Besides, the
methods are under development for an estimation of the illumination,
photosynthetic part of light and the ultraviolet radiation being important
in biological investigations. A research of the tropospheric ozone points
to periodically high concentrations in the summer, but under the permited
limits. The existing one-layer Lagrangian model is to be expanded to
include physical characterisrics of boundary layers in the air and the
ocean. That way we may determine characteristic air trajectories over
Adriatic Sea during given weather situations and get acquainted with a
possible long-range transport of pollutants from distant emission sources.
Response of the Adriatic Sea to the atmospheric forcing is of interest as
well. Particularly important is the influence of the air pressure and wind
and of the heat and water fluxes, on the processes in the sea. An attempt
is made to connect the atmospheric changes with the sea variability, in
order to cover coupling of the atmosphere and sea "in toto". Other information about the project.