Lecture 4_Atmosphere_ASR.pptx

Lecture 4_Atmosphere_ASR.pptx - Lecture-4 Spheres of the...

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Lecture-4: Spheres of the Earth Atmosphere Course Instructor: Md Asif Rahman (ASR) Lecturer, Department of Mathematics and Natural Sciences (MNS) University Building 2 (15 th Floor) E-mail: [email protected]
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Earth's Atmosphere Thin Gaseous envelope
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The atmosphere is - the vast gaseous envelope of air that surrounds the Earth. Its boundaries are not easily defined. The atmosphere contains a complex system of gases and suspended particles. It reaches over 560 km (348 miles) from the surface of the Earth, so we are only able to see what occurs fairly close to the ground. 99% of atmospheric gases, including water vapor, extend only 30 kilometer (km) above earth's surface .( ববষ সহ ৯৯ % atmospheric গগবস ই ভ ভ মম থথকক ৩০মকমম অমব বগবমপ থবকক ) Most of our weather, however, occurs within the first 10 to 15 km. Nearly 150 million kilometers separate the sun and earth, yet solar radiation মবমকরণ drives earth's weather.
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Composition of Atmosphere Nitrogen - 78% Oxygen - 21% Water Vapor – 0 to 4% Carbon Dioxide - 0 .037% Other gases make up the rest Lapse Rate
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