Considerations regarding the nebulosity regime and clouds freqency at the meteorological stations from Barlad drainage basin during 1961-2010

Ovidiu-Miron MACHIDON


Calculations based on long strings of observations (1961 - 2010) have shown that average values of total nebulosity in  the 6 locations from Barlad hydrographic basin (Negresti,
Vaslui, Barlad, Tecuci, Oncesti si Plopana) have ranged between 5.9 and 6.3 tenths. For the agricultural character of the Barlad hydrographic basin a major importance is held by
the genetically related clouds type which has the largest share in rainfall production (T. Bradu, 2004). To give expression drawn graphs I made pairs of clouds types: altostratus
(As) and nimbostratus (Ns), with long-term precipitations falling as rain, snow and ice pellets, stratocumulus (Sc) and stratus (St), generally producing precipitations as rain,
snow and drizzle, and cumulus clouds (Cu) that can evolve into cumulonimbus (Cb), with rain falling in the aversion form.



clouds, evolution, frequency, nebulosity, trend

Full Text:



Apostol L. (2004), Sub-Carpathians climate of Moldavia, Edit. Suceava University.

Bradu T. (2004), The climate of Tutova Hills, The doctorate thesis, „Al. I. Cuza”

University, Iaşi.

Budui V. (2009), The Central Moldavian Plateau between Siret and Şacovăţ rivers.

Physical-geographical study, The doctorate thesis, „Al. I. Cuza” University, Iaşi.

Machidon O. (2009), The hail phenomenon in the Bârlad basin, The doctorate thesis,

„Al. I. Cuza” University, Iaşi.

Mihăilă D. (2006), Plain of Moldavia – climate study, Edit. Univ. Suceava.

Precupanu-Larion D. (1999), The climate of Vaslui city, The doctorate thesis, „Al. I.

Cuza” University, Iaşi.

* * * Meteorological Tables TM-1 and TM-11 for the period 1961 - 2010 from the

archives of Moldova Reginal Meteorological Centre, Iaşi.