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इयत्ता अकरावी – समर्थ भूगोल नोट्स् लेखक: प्रा. मनोज बाळासाहेब देशमुख – विक्रीसाठी उपलब्ध -किंमत: रु. 130 + पोस्टेज / कुरियर रु. 60 = एकूण: रु. 190 Cell No. 9403386299


बारावी भूगोल प्रात्यक्षिक जर्नल विक्रीसाठी उपलब्ध. विद्यार्थ्यांसाठी ४०% सवलीत उपलब्ध: संपर्क: Prof. Manoj Deshmukh from R.Jr.College, Chalisgaon Dist.Jalgaon Cell No. 9421680541


Showing posts with label XI. Show all posts
Showing posts with label XI. Show all posts

Wednesday, 27 November 2019

XI, Chapter 5 In the Case of Global Climate Change, Consequences of global temperature rise- Climate change


Global climate change

            Earth's average temperature is 14 de. C. Earth's average Earth's average temperature is rising. The average temperature on the Earth's surface in the twentieth century was about 0.80 d.C. It is evident from the records of various temperatures that the increase has increased. The main reason for this is the fact that gases such as carbon dioxide and methane are considered to be emitting heat in the atmosphere, which increases the atmosphere's ability to store heat, thus increasing the temperature. Although this increase in temperature does not seem very big, the results are of concern.

Consequences of global temperature rise


1 Heat wave- Hundreds of people were killed in heat waves in Chicago in 1995 and in Paris in 2003. Such heat waves, especially during the summer period, result in increased accumulation of atmospheric dust and vapor, resulting in increased storage capacity of the atmosphere and increased temperature. Heat stroke causes people to die

2 Thermal islands - heat waves have become more difficult, especially in large cities where the roads are paved in comparison to the forest areas and construction of cement concrete, industrial and vehicular pollution is high. In such places, there is an arbitrary increase in temperature.

3 Increase in sea water level - The rise in global sea level is due to the melting of ice and glaciers. This could endanger the coastal region, destroying coastal towns, flooding several islands underwater, and destroying the habitat of many fish, birds and animals. This kind of result is felt. The sea level is predicted to rise by 1 meter by 2100, with serious consequences in the coming years.

4 The melting of glaciers on the high mountain ranges and the melting of ice in the polar regions.- Although avalanche is a natural activity, excessive glaciers and glaciers melt away are serious. In the last 25 years, Gangotri glacier has receded more than 850 meters. This rate is 22 meters per year. It is unnatural to melt glaciers so fast. This means that ice formation is slower than the melting point. Similar is the case with the glaciers in Mount Kilimanjaro, the Alps

5 Other Results - As the temperature increases, some other results can be seen as follows

A Jellyfish Breeding - As ocean water temperature rises, acid levels are increasing, so jellyfish breeding is seen in large areas even in areas where jellyfish did not exist.

B Increase in number of mosquitoes - Due to the humid conditions and high temperatures required for the breeding of mosquitoes, the average temperature rise has increased the temperature of many regions. Diseases like dengue are spreading in new areas as well.

            C Coral reefs - Coral extracts the algae in their cells, giving them a color change when the temperature changes. If sea temperatures rise for 10 C to 20 C, prolonged bleaching may result in coral color or even death. And currently corals are largely dead due to bleaching activity in the sea. As a result, more than 1/5 of the world's coral reefs have been destroyed.



Climate change - Continuous change in the global climate model is called `climate change'. These include changes in seasonal wind flows, changes in seasons, changes in tree flow periods, increase in rainfall and drought frequency. Consists of

Climate Change Matters and Consequences

1 Chronic frequency and increase in severity - In the past few years, there has been an increase in the number and duration of chronic diseases eg. Floods caused by rainfall in Mumbai in 2005, as well as floods, landslides and floods in Kedarnath in 2013. In many parts of the world, there has been an increase in the frequency of floods in different parts of the world.

2 Increase in the intensity and frequency of droughts and hurricanes- temperature rise etc. S The area of ​​drought has doubled in the earth since 1970. As the temperature of the ocean increases, the water molecules on the seabed become more active and the water vapor levels are increasing. It produces hurricanes and droughts.

3 Crop Growth Period and Changes in Agricultural Income - Increased carbon dioxide in the atmosphere is affecting climate, agriculture, air and human health.
Carbon dioxide in the atmosphere above 350 ppm is hazardous to the environment. It is also affected by rainfall and rainfall is affected by crop growth.

4 Precipitation and climate change - Forests help keep the earth's temperature low. In the region of wide rainfall, the cooling of the plants reduces the speed of baptism and preserves the air naturally. But due to the large amount of deforestation or burning of these forests, the air becomes hot and dry. This creates stress on the environment. Due to large-scale deforestation, the rainfall profile has changed dramatically.