MEVE 011 Solved Assignment 2021-22

MEVE 011 Solved Assignment 2021-22, MEVE 011 Solved Assignment 2021-22 , MEVE 011 Assignment 2022 , FREE MEVE 011 Assignment , IGNOU Assignments 2021-22- Gandhi National Open University had recently uploaded the assignments of this session for the year 2021-22. Students are recommended to download their Assignments from this webpage itself. MEVE 011 Solved Assignment 2021-22 They don’t need to go anywhere else when everything regarding the Assignments are available during this text only.

MEVE 011 Solved Assignment 2021-22: for college kids – MEVE 011 GLOBAL CLIMATE CHANGE Solved Assignment 2021-22, Students are advised that after successfully downloading their Assignments, you’ll find each and every course assignments of your downloaded. Candidates got to create separate assignment for the IGNOU Master Course, so as that it’s easy for Evaluators to ascertain your assignments.

MEVE 011 Solved Assignment 2021-22

Course Code : MEVE 011

Course Title : GLOBAL CLIMATE CHANGE

Assignment Code : MEVE 011/TMA-01/2021    

Coverage : All Blocks

Maximum Marks 100 Attempt all questions. All questions carry equal marks.

Attempt all questions. All questions carry equal marks.

Note: This assignment is based on the entire course. Answer any five questions. All question carries equal marks. The marks for each question are indicated against it within brackets on the right-hand side. Please write all answers in your own words.

1. Write short notes on the following: (20 marks)

a. Structure of the atmosphere

Troposphere

The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere. Temperature and water vapor content in the troposphere decrease rapidly with altitude. Water vapor plays a major role in regulating air temperature because it absorbs solar energy and thermal radiation from the planet's surface. The troposphere contains 99 % of the water vapor in the atmosphere. Water vapor concentrations vary with latitude. They are greatest above the tropics, where they may be as high as 3 %, and decrease toward the polar regions.

All weather phenomena occur within the troposphere, although turbulence may extend into the lower portion of the stratosphere. Troposphere means "region of mixing" and is so named because of vigorous convective air currents within the layer.

The upper boundary of the layer, known as the tropopause, ranges in height from 5 miles (8 km) near the poles up to 11 miles (18 km) above the equator. Its height also varies with the seasons; highest in the summer and lowest in the winter.

Stratosphere

The stratosphere is the second major strata of air in the atmosphere. It extends above the tropopause to an altitude of about 30 miles (50 km) above the planet's surface. The air temperature in the stratosphere remains relatively constant up to an altitude of 15 miles (25 km). Then it increases gradually to up to the stratopause. Because the air temperature in the stratosphere increases with altitude, it does not cause convection and has a stabilizing effect on atmospheric conditions in the region. Ozone plays the major role in regulating the thermal regime of the stratosphere, as water vapor content within the layer is very low. Temperature increases with ozone concentration. Solar energy is converted to kinetic energy when ozone molecules absorb ultraviolet radiation, resulting in heating of the stratosphere.

The ozone layer is centered at an altitude between 10-15 miles (15-25 km). Approximately 90 % of the ozone in the atmosphere resides in the stratosphere. Ozone concentration in the this region is about 10 parts per million by volume (ppmv) as compared to approximately 0.04 ppmv in the troposphere. Ozone absorbs the bulk of solar ultraviolet radiation in wavelengths from 290 nm - 320 nm (UV-B radiation). These wavelengths are harmful to life because they can be absorbed by the nucleic acid in cells. Increased penetration of ultraviolet radiation to the planet's surface would damage plant life and have harmful environmental consequences. Appreciably large amounts of solar ultraviolet radiation would result in a host of biological effects, such as a dramatic increase in cancers.

Thermosphere

The thermosphere is located above the mesosphere. The temperature in the thermosphere generally increases with altitude reaching 600 to 3000 F (600-2000 K) depending on solar activity. This increase in temperature is due to the absorption of intense solar radiation by the limited amount of remaining molecular oxygen. At this extreme altitude gas molecules are widely separated. Above 60 miles (100 km) from Earth's surface the chemical composition of air becomes strongly dependent on altitude and the atmosphere becomes enriched with lighter gases (atomic oxygen, helium and hydrogen). Also at 60 miles (100 km) altitude, Earth's atmosphere becomes too thin to support aircraft and vehicles need to travel at orbital velocities to stay aloft. This demarcation between aeronautics and astronautics is known as the Karman Line. Above about 100 miles (160 km) altitude the major atmospheric component becomes atomic oxygen. At very high altitudes, the residual gases begin to stratify according to molecular mass, because of gravitational separation.

Exosphere

The exosphere is the most distant atmospheric region from Earth's surface. In the exosphere, an upward travelling molecule can escape to space (if it is moving fast enough) or be pulled back to Earth by gravity (if it isn't) with little probability of colliding with another molecule. The altitude of its lower boundary, known as the thermopause or exobase, ranges from about 150 to 300 miles (250-500 km) depending on solar activity. The upper boundary can be defined theoretically by the altitude (about 120,000 miles, half the distance to the Moon) at which the influence of solar radiation pressure on atomic hydrogen velocities exceeds that of the Earth's gravitational pull. The exosphere observable from space as the geocorona is seen to extend to at least 60,000 miles from the surface of the Earth. The exosphere is a transitional zone between Earth's atmosphere and interplanetary space.

 b. Radiative forcing

2. Write short notes on the following: (20 marks)

a. Anthropogenic drivers of climate change

b. “Cloud feedback” and “Lapse-rate feedback”

3. Explain the sources of palaeoclimatic data. (20 marks)

4. Explain the direct and indirect effects of climate change on agriculture. (20 marks)

5. Explain the impacts of climate change on human health. (20 marks)

6. Write short notes on the following: (20 marks)

a. Glacier Lake Outburst floods

b. Paris Agreement

7. Explain the National Action Plan on Climate change. (20 marks)

8. Write short notes on the following: (20 marks)

a. Concept of mitigation and adaptation

b. UNFCCC

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IGNOU Assignment Status 2021-22

 MEVE 011 GLOBAL CLIMATE CHANGE Solved Assignment 2021-22: Those students who had successfully submitted their Assignments to their allocated study centres can now check their Assignment Status. Alongside assignment status, they will also checkout their assignment marks & result. MEVE 011 Solved Assignment 2021-22 All this is often available in a web mode. After submitting the assignment, you'll check you IGNOU Assignment Status only after 3-4 weeks. it'd take 40 days to declare.

Those students who had successfully submitted their Assignments to their allocated study centres can now check their Assignment Status. Along with assignment status, they can also checkout their assignment marks & result. MEVE 011 Solved Assignment 2021-22 All this is available in an online mode. MEVE 011 Solved Assignment 2021-22 After submitting the assignment, you can check you IGNOU Assignment Status only after 3-4 weeks. It might take 40 days to declare.

MEVE 011  Solved Assignment 2021-22 Here the students can check their IGNOU Assignment Status, marks, result or both the sessions i.e; June & December.

Once the TEE assignments have been submitted to the Centres, it is send to the evaluation department. MEVE 011 Solved Assignment 2021-22 After which the evaluation of IGNOU Assignment Solutions takes place.

Here the scholars can check their IGNOU Assignment Status 2020, marks, result or both the sessions i.e; June & December.

MEVE 011 Solved Assignment 2021-22 Once the TEE assignments are submitted to the Centres, it's send to the evaluation department. After which the evaluation of IGNOU Assignment Solutions takes place.

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