The Earth from the Air: Yann Arthus-Bertrand

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Both exceed 100% because their CO 2 values were increased to 345 ppmv, without changing their other constituents to compensate. Often taken from a low altitude, they reveal the imprint of human civilization on the face of the globe. For example, on an overcast day when you cannot see your shadow, there is no direct radiation reaching you, it has all been scattered. Plague journals, escapist literature, political history: explore our year in review, where we share rare book trends and a gallery of some of the most beautiful and interesting books sold in 2020.

Two older reliable sources have dry atmospheric compositions, including trace molecules, that total less than 100%: U. The average mass of the atmosphere is about 5 quadrillion (5 ×10 15) tonnes or 1/1,200,000 the mass of Earth. During the day the planetary boundary layer usually is well-mixed, whereas at night it becomes stably stratified with weak or intermittent mixing.Arthus-Bertrand's aerial photographs have been assembled into a daybook, using 170 shots from his original volume plus 195 new ones.

The result of a five-year airborne odyssey across five continents and sixty countries, The Earth from the Air is the bestselling and most popular book of aerial photography ever published. French aerial photographer Yann Arthus Bertrand spent ten years making a photographic inventory of the earth's surface.How Earth at that time maintained a climate warm enough for liquid water and life, if the early Sun put out 30% lower solar radiance than today, is a puzzle known as the " faint young Sun paradox".

The mesosphere is the third highest layer of Earth's atmosphere, occupying the region above the stratosphere and below the thermosphere.

Sue B and Charlie W were on hand to offer advice/educate; the venue was excellent and the number of participants was about right to allow everyone to get attention. New editorials by such renowned authors as Jane Goodall, Matthieu Ricard and Olivier Blond consider such perpetual issues as agriculture, climate and biodiversity, as well as the latest concerns - refugees, new technologies and environmental movements.