Research Information System
8th Atmospheric Sciences Symposium, İstanbul, Turkey, 1 - 04 November 2017, pp.548-555
Impacts of extreme weather events
are relevant for regional economies and in particular societies. In this study,
Fifteen extreme temperature indices are selected and analyzed from the recommended
list of the expert group CCL/CLIVAR and for the period of 1961 to 2016 which characterizing
a long-term period and with high-quality data. The software used to process the
data was the RClimdex 1.1. The trend results at 5% significant level showed
that warm spell duration, numbers of summer days, tropical nights, warm nights
and warm days have increased, while cold spell duration, ice days, frost days,
cool nights and cool days decreased all over Marmara. Summer days have
increased on average between 4 to 5 days per decades, While, ice days have
decreased on average about 1 day during the whole studied period. Maximum of maximum,
minimum of maximum, maximum of minimum and minimum of minimum temperatures have
had a positive trend at station scales. Also, diurnal temperature range has slightly
increased in most stations, except two southern stations, over the study area.
Thus, a large number of stations show significant warming trends for warm days
and nights throughout the study area, whereas warm extremes and night-time
based temperature indices show greater trends than cold extremes and day-time
indices. Overall, the warm extreme temperature events have increased in Marmara
during the last decades and it is expected to pronounce by the potential of
constant moisture in the Marmara's atmosphere. This is regionally evidencing
the importance of the ongoing research on climate change.