Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2006
Volume 9
Issue 4
Topic:
Forestry
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Dur³o G. 2006. MULTIANNUAL VARIATION OF THE EFFECTIVE SUNSHINE DURATION IN THE BESKID SADECKI MOUNTAINS, EJPAU 9(4), #28.
Available Online: http://www.ejpau.media.pl/volume9/issue4/abs-28.html

MULTIANNUAL VARIATION OF THE EFFECTIVE SUNSHINE DURATION IN THE BESKID SADECKI MOUNTAINS

Grzegorz Dur³o
Chair of Forest Protection and Forest Climatology, University of Agriculture in Cracow, Poland

 

ABSTRACT



A long-term variation of effective sunshine duration in the Beskid Sadecki Mountains during 1971–2005 is presented. It is based on measurement and observation data from six meteorological stations situated in this area, and representing the convex and concave terrain forms, situated at height 300–1100 m above sea level. The long-term mean annual sum of the effective sunshine duration was 1861 hours with deviation of 203 hours, which made 44% of the potential insolation in this part of the Carpathians. The highest long-term mean monthly sum of the effective sunshine duration in the Beskid Sadecki mountain range falls on August, amounting to 225 hours, and the lowest falls on December – 70 hours. General solar qualities of the Beskid Sadecki belong to very favorable ones. The comparison of results of this study with results of studies carried out during 1950–1970 indicated a visible improvement of solar conditions, especially in spring, i.e. April and May. On the basis of the forecast of the actual insolation in the Beskid Sadecki made on the basis of data for the period 1971–2005 no conclusion about a directional change of this element may be made with a required accuracy.

Key words: actual insolation, trend, Beskid Sadecki Mts.


Grzegorz Dur³o
Chair of Forest Protection and Forest Climatology,
University of Agriculture in Cracow, Poland
29 Listopada Av., No. 46, 31-425 Cracow, Poland
Phone: +48126625142
email: rldurlo@cyf-kr.edu.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.