scholarly journals Analysis of Global Warming’s Influence on the Dimensioning of Borehole Heat Exchangers at a Climate-Exposed Site

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 501
Author(s):  
Antonín Kunz ◽  
Martin Klempa ◽  
Petr Bujok ◽  
Dawid Piotrowski
Keyword(s):  
Climate Changes ◽  
Global Climate ◽  
Energy Potential ◽  
Pump System ◽  
Heat Pump System ◽  
Exposed Site ◽  
Global Climate Changes ◽  
Sustainable Performance ◽  
Using Data ◽  
The Impact

A borehole heat exchanger (BHE) presents the most reliable source of geothermal energy for any object where the heat pump system is to be installed. The main objective of BHE optimization in a specific rock massive and for calculated heat consumption is to design a BHE with proper capacity and sustainable performance. One of the most important inputs for the preparation of such a model is the average outer air temperature on the site during the year. While the properties of the local rock massive are from the heat project lifetime view (tens of years) stable, the local average outer temperature fluctuates according to global climate changes. This article presents a study of the impact of climate changes on the dimensioning process of a BHE and consequently on its performance using data from a real installation at a highly climate-exposed site in the Czech Republic. During the dimensioning of a BHE, this study could help to better quantify the objective risks that result from climate changes. However, the results of this study show that the currently calculated impact of an increase in outer temperature is not crucial, but it is advisable to take this new fact into account during the design and dimensioning process, especially for large installations. To study the ground in terms of usable energy potential at climate-exposed locations properly, the available data were critically analyzed and the results were then synthesized in an appropriate way for the needs of the data simulations.

scholarly journals Comparison of the Impact of Global Climate Changes and Urbanization on Summertime Future Climate in the Tokyo Metropolitan Area

2012 ◽  
Vol 51 (8) ◽  
pp. 1441-1454 ◽  
Author(s):  
Sachiho A. Adachi ◽  
Fujio Kimura ◽  
Hiroyuki Kusaka ◽  
Tomoshige Inoue ◽  
Hiroaki Ueda
Keyword(s):  
Climate Change ◽  
Metropolitan Area ◽  
Global Climate Change ◽  
Temperature Increase ◽  
Climate Changes ◽  
Global Climate ◽  
Local Climate ◽  
Tokyo Metropolitan Area ◽  
Global Climate Changes ◽  
The Impact

AbstractIn this study, the impact of global climate change and anticipated urbanization over the next 70 years is estimated with regard to the summertime local climate in the Tokyo metropolitan area (TMA), whose population is already near its peak now. First, five climate projections for the 2070s calculated with the aid of general circulation models (GCMs) are used for dynamical downscaling experiments to evaluate the impact of global climate changes using a regional climate model. Second, the sensitivity of future urbanization until the 2070s is examined assuming a simple developing urban scenario for the TMA. These two sensitivity analyses indicate that the increase in the surface air temperature from the 1990s to the 2070s is about 2.0°C as a result of global climate changes under the A1B scenario in the Intergovernmental Panel on Climate Change’s Special Report on Emissions Scenarios (SRES) and about 0.5°C as a result of urbanization. Considering the current urban heat island intensity (UHII) of 1.0°C, the possible UHII in the future reaches an average of 1.5°C in the TMA. This means that the mitigation of the UHII should be one of the ways to adapt to a local temperature increase caused by changes in the future global climate. In addition, the estimation of temperature increase due to global climate change has an uncertainty of about 2.0°C depending on the GCM projection, suggesting that the local climate should be projected on the basis of multiple GCM projections.

IDF curves for future climate scenarios in a locality of the Tapajós Basin, Amazon, Brazil

2019 ◽  
Vol 11 (3) ◽  
pp. 760-770
Author(s):  
Carlos Eduardo Aguiar de Souza Costa ◽  
Claudio José Cavalcante Blanco ◽  
José Francisco de Oliveira-Júnior
Keyword(s):  
General Circulation ◽  
Climate Changes ◽  
Global Climate ◽  
General Circulation Models ◽  
Future Climate ◽  
Climate Policies ◽  
Rcp 8.5 ◽  
Idf Curves ◽  
Using Data ◽  
The Impact

Abstract Changes in the global climate are attributed to the levels of greenhouse gases. Thus, future scenarios (Representative Concentration Pathways – RCPs) have been developed to explore the impact of different climate policies on the world. The RCPs are essential tools for General Circulation Models (GCMs) to simulate future climate changes. Curves that associate Intensity, Duration and Frequency (IDF) are used in forecasts and are fundamental for the design of hydraulic projects and risk management. The objective of this study was to design IDF curves for the RCP 4.5 and 8.5, using data from the HadGEM2-ES, CanESM2 and MIROC5 models. The Equidistance Quantile Matching Method was used to design the IDF curves. The simulated curves presented differences when related to the existing curve. The largest differences were for the MIROC5 (146% in RCP 8.5) and the smallest differences were for the CanESM2 (−20.83% for RCP 8.5). This result demonstrates that the method incorporates changes in future climate variability. The spatial resolutions of each model influenced their IDF curves, which led the CanESM2 curves to not present satisfactory results that are different from the MIROC5 curves, which were the ones that best represented the possible future differences.

An Empirical Evidence of Global Warming and its impact on India’s Agricultural Production

2019 ◽  
Vol 118 (10) ◽  
pp. 107-116
Author(s):  
Dr.P. Prema ◽  
Ms.R. Kanchana
Keyword(s):  
Climate Change ◽  
Agricultural Production ◽  
Climate Changes ◽  
Agricultural Land ◽  
Global Climate ◽  
Large Country ◽  
Climatic Zones ◽  
Global Climate Changes ◽  
Different Types ◽  
The Impact

India is a large country with all types of climates and different kinds of soil requiring different types of farming. Most of the agricultural land in India is dependent on rainfall for irrigation. India has about 15 Agro-climatic zones with different types of farming methods and crops. As most of the population is dependent on agriculture and two-third of the country depend on monsoon rains to aid in agriculture, any change in frequency of the rains will affect these areas critically. Assessment of the effects of global climate changes on agriculture might help to properly anticipate and adapt farming to maximize agricultural production. At the same time agriculture has been shown significant effects on climate change, primarily through the production and release of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. The impact of climate change on agriculture could result in problems like food security and may threaten the livelihood on which much of the population depends.

scholarly journals ENERGY EFFICIENCY, RENEWABLES AND ECONOMY

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Momir Đurović
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Climate Changes ◽  
Global Climate ◽  
Renewable Energy Sources ◽  
Vital Role ◽  
Energy Sources ◽  
Global Climate Changes ◽  
The World ◽  
The Impact

The paper gives results of the investigation of the impact of energy efficiency and the use of renewable energy sources on the economy in the world. In relation to this, it is also noted that energy efficiency and the use of renewable energy sources play a vital role in meeting the needs for energy and global climate changes worldwide. Furthermore, a survey is presented of the measures that are being taken in promoting the use of renewable energy sources and the increase of the energy efficiency in Europe and other countries in the world.

scholarly journals Assessing the impact of global warming on the sport, tourism, and recreation industries in western Norway

2016 ◽  
Vol 14 (3) ◽  
pp. 143-168
Author(s):  
Karolina Korsan-Kumińska
Keyword(s):  
Climate Changes ◽  
Global Climate ◽  
Sport Tourism ◽  
The Public ◽  
Global Climate Changes ◽  
Western Norway ◽  
Public Media ◽  
Domains Of Life ◽  
Major Factors ◽  
The Impact

Sport, tourism, and recreation, like many other areas of life, are influenced by environmental factors, including climate. Climate is one of the major factors determining the living conditions on our planet, which determine the functioning and behavior of all organisms. Therefore, this poses the question: Are global climate changes seen by ordinary people? If so, how are they seen and how do they affect the various domains of life, in particular, sport, tourism, and recreation? The aim of the pilot research was to determine the impact of global climate changes (observed in the public media as well as being in the public consciousness) in the area of western Norway (WN) on sport, tourism, and recreation. Pilot research was conducted in the summer and autumn of 2015 using a diagnostic survey on the internet. The research tool was a questionnaire survey. Respondents came from two groups: 61 employees and entrepreneurs in the industries of sport, tourism, and recreation in WN and 32 people either actively partaking in sport and recreational activities or visiting the region as tourists. Interviewees noted that climate changes have already occurred in the nature of western Norway. However most of them are not prepared for these changes even though they believe that the majority of the changes will only grow and intensify. For example, some of the researched companies have already been forced to take certain steps in relation to the companies functioning e.g., company reorganizations. The expected transformation in nature caused by global climate changes are changing the behavior of athletes, tourists, residents, representatives of the authorities, and economic entrepreneurs who make their living from tourism, recreation, and sport. In the future, Norway may turn out to be no longer as attractive as it is now for these people.

Antarctic Climate History and Global Climate Changes

2017 ◽  
Author(s):  
Pontus Lurcock ◽  
Fabio Florindo
Keyword(s):  
Ocean Circulation ◽  
Climate Changes ◽  
Numerical Models ◽  
Global Climate ◽  
Sediment Cores ◽  
Ice Sheets ◽  
Global Ocean ◽  
Climate History ◽  
Global Climate Changes ◽  
Planetary Albedo

Antarctic climate changes have been reconstructed from ice and sediment cores and numerical models (which also predict future changes). Major ice sheets first appeared 34 million years ago (Ma) and fluctuated throughout the Oligocene, with an overall cooling trend. Ice volume more than doubled at the Oligocene-Miocene boundary. Fluctuating Miocene temperatures peaked at 17–14 Ma, followed by dramatic cooling. Cooling continued through the Pliocene and Pleistocene, with another major glacial expansion at 3–2 Ma. Several interacting drivers control Antarctic climate. On timescales of 10,000–100,000 years, insolation varies with orbital cycles, causing periodic climate variations. Opening of Southern Ocean gateways produced a circumpolar current that thermally isolated Antarctica. Declining atmospheric CO2 triggered Cenozoic glaciation. Antarctic glaciations affect global climate by lowering sea level, intensifying atmospheric circulation, and increasing planetary albedo. Ice sheets interact with ocean water, forming water masses that play a key role in global ocean circulation.

Regional model assessments of fire risks under global climate changes

2006 ◽  
Vol 411 (2) ◽  
pp. 1485-1488 ◽  
Author(s):  
I. I. Mokhov ◽  
A. V. Chernokulsky ◽  
I. M. Shkolnik
Keyword(s):  
Climate Changes ◽  
Global Climate ◽  
Regional Model ◽  
Global Climate Changes

The influence of global climate changes on Western Siberia climate in the first half of XXI century

2018 ◽  
Author(s):  
А.А. Лагутин ◽  
Н.В. Волков ◽  
Е.Ю. Мордвин
Keyword(s):  
Radiative Forcing ◽  
Climate Changes ◽  
Western Siberia ◽  
Climate Model ◽  
Global Climate ◽  
Regional Climate ◽  
First Century ◽  
Global Climate Changes ◽  
Rcp 8.5

Представлены результаты исследований влияния глобальных климатических изменений системы Земля на климат Западной Сибири. Для установления зон региона, в которых к середине XXI в. прогнозируются изменения, использовались модельные данные региональной климатической модели RegCM4 и принятые в этом классе задач стандартизованные евклидовы расстояния между характеристиками климата для двух состояний климатической системы — современного и будущего. Установлены зоны Западной Сибири, в которых в рамках сценариев RCP 4.5 и RCP 8.5 возможной эволюции глобальной системы к 2050 г. прогнозируются изменения климата. Purpose. An analysis of the influence of a global climate changes on the climate of Western Siberia, determination of zones of the region where changes are expected in the middle of the twenty-first century. Methodology. Results obtained using the model data of the regional climate model RegCM4 and the standardized Euclidean distances between climate characteristics. Findings, originality. Simulations of the climate characteristics for the two states of the climate system — contemporary and future — have been carried out. The zones of Western Siberia region, in which climate change is expected in the framework of RCP 4.5 and RCP 8.5 radiative forcing scenarios by the 2050, have been determined.

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