scholarly journals Long-Term Variations of Temperature and Precipitation in the Megacity of Istanbul for the Development of Adaptation Strategies to Climate Change

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Hüseyin Toros ◽  
Mohsen Abbasnia ◽  
Mustafa Sagdic ◽  
Mete Tayanç
Keyword(s):  
Climate Change ◽  
Mean Value ◽  
Daily Maximum ◽  
Precipitation Series ◽  
Mean Values ◽  
Temperature And Precipitation ◽  
Average Annual Temperature ◽  
Notable Increase ◽  
Total Study Period

Istanbul, as one of the four anchor megacities of Europe, has shown a rise of 0.94°C in average annual temperature over the long period of 1912–2016 under impacts of anthropogenic climate change. A notable increase in temperatures has started after the 1940s, which is in parallel with the beginning of industrialization era in Istanbul. This warming is associated with an extensive population growth and accompanied the decrease in vegetation cover. Increasing in minimum series of temperature is more evident than maximum values and the rising rate of temperature values has been more pronounced during recent decades. The first significant upward trend in precipitation series has periodically started in 1920s, while there has been a stable trend from 2001 till today. The daily average of rainfall amount increased with a mean value of 58 mm during the total study period. Rising rate of daily maximum precipitation has been more evident in the last 3 decades, which is shown by the increased frequency of heavy rainfall. In this regard, both of the temperature and precipitation series had higher mean values (13.9°C and 878 mm) for the final period (1965–2016) compared to the mean values (13.6°C and 799 mm) belonging to the first period (1912–1964).

scholarly journals Analysis of climate change in Dnipropetrovsk Region

2017 ◽  
pp. 43-51
Author(s):  
V. V. Hrynchak
Keyword(s):  
Climate Change ◽  
Air Temperature ◽  
Climate Changes ◽  
Absolute Temperature ◽  
Climatic Conditions ◽  
Annual Precipitation ◽  
Temperature And Precipitation ◽  
Weather Observations ◽  
Average Annual Temperature

The decision about writing this article was made after familiarization with the "Brief Climatic Essay of Dnepropetrovsk City (prepared based on observations of 1886 – 1937)" written by the Head of the Dnipropetrovsk Weather Department of the Hydrometeorological Service A. N. Mikhailov. The guide has a very interesting fate: in 1943 it was taken by the Nazis from Dnipropetrovsk and in 1948 it returned from Berlin back to the Ukrainian Hydrometeorological and Environmental Directorate of the USSR, as evidenced by a respective entry on the Essay's second page. Having these invaluable materials and data of long-term weather observations in Dnipro city we decided to analyze climate changes in Dnipropetrovsk region. The article presents two 50-year periods, 1886-1937 and 1961-2015, as examples. Series of observations have a uniform and representative character because they were conducted using the same methodology and results processing. We compared two main characteristics of climate: air temperature and precipitation. The article describes changes of average annual temperature values and absolute temperature values. It specifies the shift of seasons' dates and change of seasons' duration. We studied the changes of annual precipitation and peculiarities of their seasonable distribution. Apart from that peculiarities of monthly rainfall fluctuations and their heterogeneity were specified. Since Dnipro city is located in the center of the region the identified tendencies mainly reflect changes of climatic conditions within the entire Dnipropetrovsk region.

scholarly journals Investigation of The Long-Term Seasonal Variability of Precipitation And Temperature Across Turkey

2021 ◽  
Author(s):  
Nida Doğan Çiftçi ◽  
Ahmet Duran Şahin
Keyword(s):  
Climate Change ◽  
The Black Sea ◽  
Daily Maximum ◽  
Time Interval ◽  
Seasonal Temperature ◽  
Total Precipitation ◽  
Temperature And Precipitation ◽  
Increasing Trend ◽  
Precipitation And Temperature

Abstract The variability of temperature and precipitation is the main subject of climate change. Globally, since the last century, climate change leads to an increase in the occurrence of weather extremes along with mean values of climate parameters. In this study, long term changes in seasonal temperature and precipitation extremes are investigated based on daily maximum, minimum, mean temperature, and daily total precipitation data assessing the trends for the winter (DJF), spring (MAM), summer (JJA) and fall (SON) seasons across Turkey during 1960 – 2019 period. The first aim of the paper is to evaluate changes on warming/cooling trends of temperature, increasing/decreasing trends of precipitation, and variability of seasonal averages over Turkey. Extreme value and relative value indices are used for evaluating both precipitation and temperature trends of the seasons by dividing into two sequential periods and each time interval has 30 years’ data. Seasonal distribution of Probability Density Function (PDF) for air temperature anomalies are shown for the first (1960–1989), the second (1990–2019) halves of the whole period. For a comprehensive data quality assessment, Mann-Kendall (MK) trend test, Sen’s slope estimator, and the Pettit test, indices analyses have been performed [significant<0.05]. Hence, the data interval completely includes two thirty years’ periods, the results of this study could be interpreted as a significant summary of climatological seasonal changes in climate zones over Turkey. There has been a significant increasing trend on temperature over Turkey during 1960-2019, at TXn indices, 13 out of 61 stations has 2 °C decades−1 increasing, moreover, except for 5 stations, 1 °C decades−1 increasing trend is observed between the halves. Warming trends both extreme and relative indices are observed on the majority of stations. While there has been a gradually increasing trend on temperature indices over the zones, variable results are gotten on precipitation indices. Continental -b, Continental- c and the Black Sea climate have shown approximately 50 mm increasing on PRCPTOT index, Continental-a, Transition and Mediterranean climate annual total precipitation value have decreased. The features of PDFs clearly show that there has been a significant increase in the prevalence of extreme precipitation in the second halves across Turkey.

Frequency of Extremes and its Relation to Climate Fluctuations

1993 ◽  
Vol 24 (1) ◽  
pp. 1-12 ◽  
Author(s):  
I. Krasovskaia ◽  
L. Gottschalk
Keyword(s):  
Climate Change ◽  
Probability Distribution ◽  
Climatic Variables ◽  
Statistical Parameters ◽  
Mean Values ◽  
Climate Fluctuations ◽  
Temperature And Precipitation ◽  
Climate Change Concern ◽  
Runoff Events

Possible consequences of climate change concern both changes in long-term mean values of runoff and changes in frequency and magnitude of extreme runoff events. The physical safety of dams and protection against floods are not sensitive to the moderate changes in mean values but to the frequency and magnitude of extremes. This study presents the results of the analyses of the changes in the behavior of the extreme runoff values due to observed changes of temperature and precipitation. Statistical parameters of the magnitude of floods as well as their intensity have been studied. An attempt is also made to establish regional probability distribution curves for the frequencies of the extreme floods for different patterns of changes in the climatic variables considered.

scholarly journals Climate Change in the Western Balkans and Eu Green Deal – Coherence, Challenges, and Perspective

2021 ◽  
Author(s):  
Sandi Knez ◽  
Snežana Štrbac ◽  
Iztok Podbregar
Keyword(s):  
Climate Change ◽  
The State ◽  
Policy Recommendations ◽  
The European Union ◽  
Western Balkans ◽  
Net Zero ◽  
Average Annual Temperature ◽  
Level Of Economic Development ◽  
The Eu

Abstract Background: The European Commission (EC), based on the European Green Deal (2019) and the Recovery plan for Europe (2021) envisages investing 30% of the budget in climate-related programs, projects, and initiatives, which clearly shows Europe's commitment to becoming the first climate-neutral region by 2050. Activities are also planned for countries that are not members of the European Union (EU), which requires complex changes in the field of legislation, strategic planning, implementation, and monitoring. To successfully plan short-term and long-term activities on these grounds, it is necessary to have a realistic picture of the state of climate change in each country - as they spill over into the entire region of Europe. The main objective of this paper is to present the state of climate change in six Western Balkans countries, of which only Croatia is a member of the EU, for the needs of planning activities and initial harmonization with the EU plan to reaching net-zero greenhouse gas emissions (GHG) by 2050. Results: The main results of the research show that in all countries of the region, the average annual temperature increased by 1.2 °C compared to 1970, with stabilization and the beginning of the decline which can be expected around 2040. The main reasons for climate change in the region are: industry, energy, and heating sector based on coal exploitation, low energy efficiency, etc. Conclusions: It can be concluded that all countries of the Western Balkans have adopted (or are in the process of adopting) the necessary regulations and strategies towards climate change mitigation, but the implementation of specific activities is at a low level. The reasons for this most often lies in the insufficient commitment of decision-makers to make significant changes in the field of climate change transition (lower level of economic development, lack of investment, preservation of social peace). Finally, the paper provides an overview of climate change by country, scenario analysis, and policy recommendations.

scholarly journals Climate Change Influences Basidiome Emergence of Leaf-Cutting Ant Cultivars

2021 ◽  
Vol 7 (11) ◽  
pp. 912
Author(s):  
Rodolfo Bizarria ◽  
Pepijn W. Kooij ◽  
Andre Rodrigues
Keyword(s):  
Climate Change ◽  
Climate Change Scenarios ◽  
Nest Architecture ◽  
Historical Records ◽  
Climate Data ◽  
Temperature And Precipitation ◽  
Data Analyses ◽  
Symbiotic Mutualism ◽  
Leaf Cutting

Maintaining symbiosis homeostasis is essential for mutualistic partners. Leaf-cutting ants evolved a long-term symbiotic mutualism with fungal cultivars for nourishment while using vertical asexual transmission across generations. Despite the ants’ efforts to suppress fungal sexual reproduction, scattered occurrences of cultivar basidiomes have been reported. Here, we review the literature for basidiome occurrences and associated climate data. We hypothesized that more basidiome events could be expected in scenarios with an increase in temperature and precipitation. Our field observations and climate data analyses indeed suggest that Acromyrmex coronatus colonies are prone to basidiome occurrences in warmer and wetter seasons. Even though our study partly depended on historical records, occurrences have increased, correlating with climate change. A nest architecture with low (or even the lack of) insulation might be the cause of this phenomenon. The nature of basidiome occurrences in the A. coronatus–fungus mutualism can be useful to elucidate how resilient mutualistic symbioses are in light of climate change scenarios.

scholarly journals Satellites, Self-reports, and Submersion: Exposure to Floods in Bangladesh

2015 ◽  
Vol 105 (5) ◽  
pp. 232-236 ◽  
Author(s):  
Raymond Guiteras ◽  
Amir Jina ◽  
A. Mushfiq Mobarak
Keyword(s):  
Climate Change ◽  
Economic Activity ◽  
Climate Change Impacts ◽  
Objective Data ◽  
Short Term ◽  
Temperature And Precipitation ◽  
Flood Exposure ◽  
Self Reports ◽  
Term Variation

A burgeoning “Climate-Economy” literature has uncovered many effects of changes in temperature and precipitation on economic activity, but has made considerably less progress in modeling the effects of other associated phenomena, like natural disasters. We develop new, objective data on floods, focusing on Bangladesh. We show that rainfall and self-reported exposure are weak proxies for true flood exposure. These data allow us to study adaptation, giving accurate measures of both long-term averages and short term variation in exposure. This is important in studying climate change impacts, as people will not only experience new exposures, but also experience them differently.

Effectiveness of Long-term Heparin-induced Extracorporeal LDL Precipitation (HELP) in Improving Coronary Calcifications

2003 ◽  
Vol 26 (3) ◽  
pp. 252-255 ◽  
Author(s):  
A. Ramunni ◽  
L.F. Morrone ◽  
G. Baldassarre ◽  
E. Montagna ◽  
A. Saracino ◽  
...  
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Clinical Evidence ◽  
Ldl Cholesterol ◽  
Clinical Manifestations ◽  
Mean Value ◽  
Mean Values ◽  
Plasma Pool ◽  
Before And After

There is clear clinical evidence that a drastic lowering of plasma LDL- Cholesterol (LDL) concentrations significantly reduces the rate of total and coronary mortality as well as the incidence of cardiovascular events in high risk hypercholesterolemic patients. We describe the case of a 51-year-old woman with coronary heart disease (CHD) who presented with increasing angina on exertion in 1995, at the age of 45. She suffered from a heterozygous familial hypercholesterolemia and in 1985 her total cholesterol (TCHO) was 328±62 mg/dl (mean value of ten analysis). After ten years of statins her mean values (20 analysis, 2 per year) were: TCHO 259±71, LDL 209±47, HDL 35±7 mg/dl. Coronary angiography (CA) performed in 1995 disclosed three vessel coronary heart disease with significant stenoses of the distal right coronary artery, multiple calcifications of the interventricularis artery and multiple plaques with significant stenoses in the ramus circumflexus. The woman underwent coronary by-pass surgery. Thereafter the patient was treated for six years with HELP in biweekly intervals, in combination with statins. TCHO, LDL, HDL and fibrinogen (fb) levels were measured before and after each treatment. Their mean values for an amount of 120 sessions were: TCHO pre 216±23, post 111±18 LDL pre 152±16 post 67±18, HDL pre 42±5 post 35±4 fb pre 306±48 post 125±31. In 2001 a new CA was performed. Calcifications disappeared and stenoses were identical to the previous CA or reduced. There were no further clinical manifestations of CHD. We trust that the clinical benefit of the HELP procedure will be substantial for those patients who have problems in clearing LDL from their plasma pool and who are at the same time sensitive to elevated LDL levels by the development of premature coronary sclerosis.

scholarly journals Impact of Climate Change on Livestock Returns and Rangeland Ecosystem Sustainability in the Southwest

2018 ◽  
Vol 47 (2) ◽  
pp. 336-356 ◽  
Author(s):  
Gregory L. Torell ◽  
Katherine D. Lee
Keyword(s):  
Climate Change ◽  
Current Method ◽  
Adaptive Methods ◽  
Livestock Grazing ◽  
Climate Projections ◽  
Stocking Rate ◽  
Forage Production ◽  
Temperature And Precipitation ◽  
Stocking Rates

Climate change will increase variability in temperature and precipitation on rangelands, impacting ecosystem services including livestock grazing. Facing uncertainty about future climate, managers must know if current practices will maintain rangeland sustainability. Herein, the future density of an invasive species, broom snakeweed, is estimated using a long-term ecological dataset and climate projections. We find that livestock stocking rates determined using a current method result in lower forage production, allowable stocking rate, and grazing value than an economically efficient stocking rate. Results indicate that using ecology and adaptive methods in management are critical to the sustainability of rangelands.

scholarly journals Communicating Climate Change: Probabilistic Expressions and Concrete Events

2019 ◽  
Vol 11 (3) ◽  
pp. 651-664 ◽  
Author(s):  
Susan Joslyn ◽  
Raoni Demnitz
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Representative Sample ◽  
Heat Waves ◽  
Communication Strategies ◽  
Mean Value ◽  
Temperature And Precipitation ◽  
Nationally Representative ◽  
Change Beliefs ◽  
Unanimous Agreement

Abstract Despite near unanimous agreement among climate scientists about global warming, a substantial proportion of Americans remain skeptical or unconcerned. The two experiments reported here tested communication strategies designed to increase trust in and concern about climate change. They also measured attitudes toward climate scientists. Climate predictions were systematically manipulated to include either probabilistic (90% predictive interval) or deterministic (mean value) projections that described either concrete (i.e., heat waves and floods) or abstract events (i.e., temperature and precipitation). The results revealed that projections that included the 90% predictive interval were considered more trustworthy than deterministic projections. In addition, in a nationally representative sample, Republicans who were informed of concrete events with predictive intervals reported greater concern and more favorable attitudes toward climate scientists than when deterministic projections were used. Overall, these findings suggest that while climate change beliefs may be rooted in partisan identity, they remain malleable, especially when targeted communication strategies are used.

scholarly journals Climatic Trends in Different Bioclimatic Zones in the Chitwan Annapurna Landscape, Nepal

Climate ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 136
Author(s):  
Dol Raj Luitel ◽  
Pramod K. Jha ◽  
Mohan Siwakoti ◽  
Madan Lall Shrestha ◽  
Rangaswamy Munniappan
Keyword(s):  
Climate Change ◽  
Time Series Data ◽  
Lapse Rate ◽  
Series Data ◽  
Average Temperature ◽  
Temperature And Precipitation ◽  
Average Annual Temperature ◽  
Bioclimatic Zone ◽  
The Impact ◽  
Precipitation Trends

The Chitwan Annapurna Landscape (CHAL) is the central part of the Himalayas and covers all bioclimatic zones with major endemism of flora, unique agro-biodiversity, environmental, cultural and socio-economic importance. Not much is known about temperature and precipitation trends along the different bioclimatic zones nor how changes in these parameters might impact the whole natural process, including biodiversity and ecosystems, in the CHAL. Analysis of daily temperature and precipitation time series data (1970–2019) was carried out in seven bioclimatic zones extending from lowland Terai to the higher Himalayas. The non-parametric Mann-Kendall test was applied to determine the trends, which were quantified by Sen’s slope. Annual and decade interval average temperature, precipitation trends, and lapse rate were analyzed in each bioclimatic zone. In the seven bioclimatic zones, precipitation showed a mixed pattern of decreasing and increasing trends (four bioclimatic zones showed a decreasing and three bioclimatic zones an increasing trend). Precipitation did not show any particular trend at decade intervals but the pattern of rainfall decreases after 2000AD. The average annual temperature at different bioclimatic zones clearly indicates that temperature at higher elevations is increasing significantly more than at lower elevations. In lower tropical bioclimatic zone (LTBZ), upper tropical bioclimatic zone (UTBZ), lower subtropical bioclimatic zone (LSBZ), upper subtropical bioclimatic zone (USBZ), and temperate bioclimatic zone (TBZ), the average temperature increased by 0.022, 0.030, 0.036, 0.042 and 0.051 °C/year, respectively. The decade level temperature scenario revealed that the hottest decade was from 1999–2009 and average decade level increases of temperature at different bioclimatic zones ranges from 0.2 to 0.27 °C /decade. The average temperature and precipitation was found clearly different from one bioclimatic zone to other. This is the first time that bioclimatic zone level precipitation and temperature trends have been analyzed for the CHAL. The rate of additional temperature rise at higher altitudes compared to lower elevations meets the requirements to mitigate climate change in different bioclimatic zones in a different ways. This information would be fundamental to safeguarding vulnerable communities, ecosystem and relevant climate-sensitive sectors from the impact of climate change through formulation of sector-wise climate change adaptation strategies and improving the livelihood of rural communities.

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