Changes in precipitation extremes on the Black Sea Western Coast

Croitoru, Adina‐Eliza; Chiotoroiu, Brindusa-Cristina; Todorova, Veneta Ivanova; Torică, Vasile

doi:10.1016/j.gloplacha.2013.01.004

Cited by 77 publications

(52 citation statements)

References 41 publications

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“…The testing of the trends' statistical significance was done in relation to the application's a thresholds (two-tailed test), i.e., 0.1, 0.05, 0.01 and 0.001 (corresponding to confidence levels of 90, 95, 99 and 99.9 %), which have been integrally used in numerous studies on temperature variability (Mohsin and Gough 2010;Croitoru et al 2012a;Ageena et al 2014;Appiotti et al 2014;Cheval et al 2014). In addition to positive/negative trends, the study also considered stationary trends, defined by a slope value of 0.000 (Croitoru et al 2013b).…”

Section: Trend Detection and Annual Temperature Rate Computationmentioning

confidence: 99%

Spatio-temporal trends of mean air temperature during 1961–2009 and impacts on crop (maize) yields in the most important agricultural region of Romania

Prăvălie

Bandoc

Patriche

et al. 2016

Stoch Environ Res Risk Assess

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Climate change analysis is essential, considering the numerous economic and ecological implications of this critical global environmental issue. This paper analyzes the spatial and temporal trends of mean air temperature in Romania's most important agricultural area, the south and south-eastern region, between 1961 and 2009. In this respect, multiannual (the entire period) and multidecadal ) trends were analyzed using the Mann-Kendall test and Sen's slope method at 23 weather stations, annually, seasonally and for the growing season of the region's main agricultural crops (maize and wheat). Multiannually, the results showed statistically significant temperature increases, on all temporal scales (maximum rate of 0.06°C/year recorded in summer, equivalent to a net temperature rise of 2.82°C), except for the autumn season (cooling without statistical significance). Multidecadally, the 1961-1990 period is marked by a general cooling, especially in autumn (maximum values of -0.07°C/year or over 2°C net cooling). In the 1971-2000 and 1981-2009 periods, a general warming was observed (maximum in summer for both multidecades, when positive rates peaked at 0.09°C/year, or 2.5-3°C net warming), but the warming of the last three decades is the most prominent in terms of spatial average magnitude and trend significance. Upon analysis of the impact of climate warming on agricultural yields (maize) through linear regression, in the 1991-2000 decade, considered as case study, it was found that in 32 % of the total analyzed area there are evident relationships between the two variables (p value \0.05). In this case, a dependency of 33-50 % (40 %, on average) of maize to climate was found, and a sensitivity (loss) ranging between 0.9 and 1.5 t/ha/year (1.2 t/ha/year, on average) for a 1°C temperature rise. At the same time, significant losses (of up to 1.7 t/ha/year) of maize for a 1°C temperature rise were identified in 51 % of the area, but with little p value significance (between 0.05 and 0.1). It is however necessary to analyse the agro-climatic results cautiously, considering that only one decade of climate-agriculture relationship was studied. The results can be useful first and foremost for mitigating the climate change impact on agricultural systems, by prioritizing future adaptation strategies enforced by policy makers.

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Section: Trend Detection and Annual Temperature Rate Computationmentioning

confidence: 99%

Spatio-temporal trends of mean air temperature during 1961–2009 and impacts on crop (maize) yields in the most important agricultural region of Romania

Prăvălie

Bandoc

Patriche

et al. 2016

Stoch Environ Res Risk Assess

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“…Available online at ETCCDI [49] are the detailed definitions of the indices. Global and regional studies have used these indices for analyzing extreme changes [10,16,26,29]. Twenty four out of the twenty seven climate indices were used in this study and are presented in Tables 2 and 3: …”

Section: Climate Indicesmentioning

confidence: 99%

“…Changes in surface temperature otherwise known as global warming has attracted the attention of the researchers, world leaders and policy makers due to increasing magnitude and frequency of extreme precipitation events [15][16]. Populations in less developed countries are more likely to be in danger due to floods as a result of extreme precipitations [17].…”

Section: Introductionmentioning

confidence: 99%

“…Populations in less developed countries are more likely to be in danger due to floods as a result of extreme precipitations [17]. On a global scale, extreme precipitation events filliped by thunderstorm activity, increased moisture levels in the atmosphere, and flash flooding appear to occur more frequently and these extreme events have been widely reported [16,[18][19][20][21][22][23][24]. Due of the excess water vapor in the atmosphere, increase in temperature is reported to be associated with the current increment in extreme precipitation events [7].…”

Section: Introductionmentioning

confidence: 99%

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<strong>Changes in Diurnal Temperature and Precipitation Extremes in North Central Region of Nigeria</strong>

Benson

Nwokike

Williams

et al. 2017

Proceedings of the 2nd International Electronic Conference on Atmospheric Sciences

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Global warming and changes in precipitation patterns are among the major effects of climate change. In this study, the long-term variability in ambient surface temperature and precipitation were evaluated in the north central region of Nigeria (Abuja, Kogi, Kwara, Niger, and Plateau) using meteorological observations obtained from . Daily precipitation data from synoptic weather stations were carefully quality-controlled using the RClimdex 1.1 developed by Expert Team on Climate Change Detection, Monitoring and Indices (ETCCDMI). The quality-controlled dataset were homogenized using RHtestsV4 and the detected change points were adjusted. Results showed a decrease in cool nights and cool days (TN10P, TX10P), and increasing trend in warm nights and days (TN90P, TX90P). The trend in rainfall is variable compared to changes in temperature. The precipitation indices indicated increasing trend in total annual precipitation (PRCPTOT), and a significant decrease in the number of consecutive wet days (CWD) in this region. In general, regional changes in climate temperature and precipitation extremes were significant (p<0.05) and could result in serious climate induced effects.

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“…Precipitation and temperature are deemed as the most important components which can directly reflect the climate change. The frequency of extreme events was rising under the condition of global warming, especially the extreme precipitation and temperature events (Croitoru et al, 2013). Both extreme precipitation and temperature events often cause a series of extreme hydrological events, such as droughts and floods.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal characteristics of extreme precipitation and temperature: a case study in Yunnan Province, China

Yang

Zuo

et al. 2015

Proc. IAHS

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Abstract. Spatiotemporal characteristics of extreme precipitation and temperature in Yunnan Province, China, were analyzed by using observed daily data at 28 meteorological stations from 1958-2013 in this study. Nine extreme precipitation indices and 6 extreme temperature indices were adopted, and the tendency of those indices was investigated by using Mann-Kendal test method. In order to distinguish the spatial characteristics, the region was divided into 5 regions according to climate and topography, then the characteristics of each region were compared each other. The results indicate that changes of extreme temperature are more sensitive and significant than those of precipitation. The contribution of extreme precipitation to total precipitation presented a significant upward trend, but the annual total wet-day precipitation (PRCPTOT) did not show significant changes. Both maximum and minimum temperature showed significant increasing tendency while there was not obvious changes for precipitation. The spatial features of extreme precipitation and temperature are similar. It was noted that extreme precipitation and temperature events occurred more frequently in central region where the risk of extreme climatic events was greater than other areas.

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Changes in precipitation extremes on the Black Sea Western Coast

Cited by 77 publications

References 41 publications

Spatio-temporal trends of mean air temperature during 1961–2009 and impacts on crop (maize) yields in the most important agricultural region of Romania

Spatio-temporal trends of mean air temperature during 1961–2009 and impacts on crop (maize) yields in the most important agricultural region of Romania

<strong>Changes in Diurnal Temperature and Precipitation Extremes in North Central Region of Nigeria</strong>

Spatiotemporal characteristics of extreme precipitation and temperature: a case study in Yunnan Province, China

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