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16 October, 2018 10:25:35 AM

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About climate change: Past, present and future

Pollution changes our planet’s climate; anyway not the greater part sorts about air contamination have the same impact
Mohammed Abul Kalam, PhD
About climate change: Past, present and future

Bangladesh’s average annual temperatures are expected to rise by 1.0°C to 1.5°C by 2050 even if preventive measures are taken along the lines of those recommended by the Paris climate change agreement of 2015. If no measures are taken, then the country’s average temperatures are predicted to increase by 1.0°C to 2.5°C.

“Around the world, and especially for Bangladesh, climate change is an acute threat to development and efforts to end poverty,” said Hartwig Schafer, Vice President for South Asia Region. “In addition to the coastal zones, the warming weather will severely affect the country’s inland area in the next decades. To deal with climate change, the country needs to focus on creating jobs outside the agriculture sector and improve the capacity of its government institutions. The World Bank is committed to helping Bangladesh become more resilient to climate change.” (The Independent, September 28, 2018).
Climate change is rapidly proceeding, and climate-related risks are being exacerbated. The Loss and Damage discourse, initiated almost three decades ago by small island states worried about sea level rise, has given voice to concerns for climate change-related impacts that may be irreversible and beyond physical and social adaptation limits.

This year has brought new temperature records in Africa and Asia, the hottest European summer in recent history, with associated droughts, and forest fires as far north as the Arctic Circle, severe flooding in India and Bangladesh, and massive cyclone damage in Fiji, the Philippines and China. Research has shown that the frequency and severity of extreme weather and climate-related hazards is likely to increase as a result of anthropogenic climate change.  

Climate Change and Biodiversity Scenarios:  Situations about progressions on biodiversity to those quite a while 2100 cam wood right away be developed, In view of situations of transforms done climatic CO2, climate, vegetation, and territory utilize and the known affectability for biodiversity will these progressions done physical Also freshwater biological communities. This synthesis focuses on estimates of biodiversity change as projected for the 21st century by models or extrapolations based on experiments and observed trends.  The expression “biodiversity” may be utilized within an expansive feeling Likewise it is characterized in the gathering for living differences will mean the plenitude and circulations about Also connections between genotypes, species, communities, biological communities, ecosystems and biomes

Carbon cycle: The global carbon cycle operates through a variety of response and feedback mechanism, responses of the carbon cycle to changing CO2 concentrations. Anthropogenic CO2 by the ocean is primarily governed by ocean circulation and carbonate chemistry. Changes in marine biology brought about by changes in calcification at low pH could increase the clean uptake of CO2 by a few percentage points.

CO2 Capture and Sequestration: Carbon dioxide (CO2) catch more sequestration (CCS) may be a situated about innovations that might significantly diminish CO2 discharges starting with new Also existing coal- and gas-fired control plants Furthermore substantial modern sources. Carbon dioxide (CO2) catch and sequestration (CCS) Might assume a paramount part in decreasing greenhouse gas emissions, same time empowering low-carbon power era starting with control plants.  Carbon dioxide (CO2) capture and sequestration (CCS) can significantly reduce emissions from large stationary sources of CO2, which include coal- and natural-gas-fired power plants, as well as certain industry types such as ethanol and natural gas processing plants.

Climate Hazards: Climate and climate-related hazards such as floods, storms, and droughts have served as trigger events for more than 75% of the disasters that have occurred globally over the past decade. Proportionately, these disasters affect the least developed countries most intensely, proving to be especially harmful to poverty stricken populations.

Climate Change Challenges: Environmental change may be a standout amongst the important challenges of the 21st century, alongside global population, deficiency alleviation, natural resources degradation worldwide security. The issue may be that ‘climate change’ will be no more simply a scientific concern, but also includes economics, sociology, geopolitics, national and politics, law and health just to name a only some. But with lots of other problems in the world should we care about climate change? The thing that we are discovering is that if we don't generate win-win results that point climate change will build all our other issues more worse.

Climate Change Economies:  Monetary investigations assume a basic part in light of environmental change approaches. Recognizing, evaluating and conveying the ramifications of monetary vulnerability and learning holes remain a noteworthy test – for instance - in portrayal of long haul innovation change and valuation of non-showcase impacts. I trust that Climate Change Economics can give a critical discussion to consider major monetary issues that will upgrade understanding and enhance atmosphere approach consultations. Worldwide environmental change will bring expansive and expensive effects that touch each zone of the economy. The possibility of worldwide environmental change has risen as a noteworthy logical and open arrangement issue. Logical examinations demonstrate that amassed carbon dioxide (CO2) transmitted from the consuming of petroleum products, alongside commitments from other human-incited ozone depleting substance discharges, is prompting hotter surface temperatures. Conceivable ebb and flow century outcomes of this temperature increment incorporate expanded recurrence of extreme temperature occasions, (for example, warm waves), uplifted tempest force, modified precipitation designs, ocean level ascent, and inversion of sea streams.

Climate Change and Health: In the most recent 50 years, mankind's exercises – especially those smouldering about fossil fills – bring discharged addition amounts from claiming carbon dioxide What's more different greenhouse gasses to trap extra high temperature in the bring down environment Also influence the worldwide environmental. Between 2030 and 2050, environmental change will be anticipated with make pretty nearly 250 000 extra passing for every year, starting with malnutrition, malaria, the runs Also high temperature anxiety. In spite of the fact that worldwide warming might bring some restricted benefits, for example, fewer winter passing On calm atmospheres Also expanded sustenance handling On sure areas, the Generally speaking wellbeing impacts of an evolving environmental are prone on be overwhelmingly negative. Environmental change influences social What's more natural determinants about wellbeing – clean air, safe drinking water, addition sustenance Furthermore secure cover. Provided for that the affects of environmental change would anticipated to expand over the following century, certain existing wellbeing dangers will heighten Furthermore new wellbeing dangers might develop.

Climate change is the greatest threat to health of this century. It is impacting health in every country today and is projected to reverse half a century of progress on global health. Global action is urgent and must be accelerated to avoid potentially catastrophic levels of global warming.

The health sector has a vital role to play – as an important voice advocating for climate action and as a key sector that must reduce its own greenhouse gas emissions. Climate change poses a major threat to health, and health systems and professionals are on the front lines dealing with the human impacts of climate change now. Climate solutions can offer significant opportunities to address major health challenges, from global health inequities to the non-communicable disease epidemic.

Integrating health sector perspectives in climate policy at all levels of government, and the health voice in the public climate debate, is essential. A fully mobilized health sector will be a powerful force for climate action.

The immensity of global warming can be discouraging and depressing. What can one person, or even one nation, do on their own to slow and reverse climate change? The good news is that we know exactly what needs to be done to stop climate change - and the technologies we need already exist. With the right policies at national and local levels, we would be able to deploy them on a large scale.

The writer is former Head, Department of Medical Sociology, Institute of Epidemiology, Disease Control & Research (IEDCR), Dhaka, Bangladesh E-mail: med_sociology_iedcr@yahoo.com

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Editor : M. Shamsur Rahman

Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Editor : M. Shamsur Rahman
Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

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