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|    sci.environment    |    Discussions about the environment and ec    |    198,385 messages    |
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|    Message 198,289 of 198,385    |
|    De-Trois-Leaning to Ed P    |
|    =?UTF-8?Q?Re:_Mars_Has_an_Unexpected_Inf    |
|    13 Nov 24 11:15:34    |
      XPost: alt.home.repair, rec.food.cooking, alt.global-warming       XPost: can.politics, aus.politics       From: dtl@invalid.net              Ed P wrote:       > What is the reaction of burning 100 million tons of fuel today?              Increased albedo leading soon enough to global cooling, rapidly.              > What about all the trees cut down?              25% more vegetation exists as a direct complimentary partner to       increased C)2 production.              In essence the "green" Oxygen balance has improved.              https://science.nasa.gov/earth/climate-change/co2-is-making-eart       -greenerfor-now/              A quarter to half of Earth’s vegetated lands has shown significant       greening over the last 35 years largely due to rising levels of       atmospheric carbon dioxide, according to a new study published in the       journal Nature Climate Change on April 25.              An international team of 32 authors from 24 institutions in eight       countries led the effort, which involved using satellite data from       NASA’s Moderate Resolution Imaging Spectrometer and the National Oceanic       and Atmospheric Administration’s Advanced Very High Resolution       Radiometer instruments to help determine the leaf area index, or amount       of leaf cover, over the planet’s vegetated regions. The greening       represents an increase in leaves on plants and trees equivalent in area       to two times the continental United States.              Green leaves use energy from sunlight through photosynthesis to       chemically combine carbon dioxide drawn in from the air with water and       nutrients tapped from the ground to produce sugars, which are the main       source of food, fiber and fuel for life on Earth. Studies have shown       that increased concentrations of carbon dioxide increase photosynthesis,       spurring plant growth.              While rising carbon dioxide concentrations in the air can be beneficial       for plants, it is also the chief culprit of climate change. The gas,       which traps heat in Earth’s atmosphere, has been increasing since the       industrial age due to the burning of oil, gas, coal and wood for energy       and is continuing to reach concentrations not seen in at least 500,000       years. The impacts of climate change include global warming, rising sea       levels, melting glaciers and sea ice as well as more severe weather events.              Carbon dioxide fertilization isn’t the only cause of the increased plant       growth—nitrogen, land cover change and climate change by way of global       temperature, precipitation and sunlight changes all contribute to the       greening effect. To determine the extent of carbon dioxide’s       contribution, researchers ran the data for carbon dioxide and each of       the other variables in isolation through several computer models that       mimic the plant growth observed in the satellite data.              Results showed that carbon dioxide fertilization explains 70 percent of       the greening effect, said co-author Ranga Myneni, a professor in the       Department of Earth and Environment at Boston University. “The second       most important driver is nitrogen, at 9 percent. So we see what an       outsized role CO2 plays in this process.”              About 85 percent of Earth’s ice-free lands is covered by vegetation. The       area covered by all the green leaves on Earth is equal to, on average,       32 percent of Earth’s total surface area — oceans, lands and permanent       ice sheets combined. The extent of the greening over the past 35 years       “has the ability to fundamentally change the cycling of water and carbon       in the climate system,” said lead author Zaichun Zhu, a researcher from       Peking University, China, who did the first half of this study with       Myneni as a visiting scholar at Boston University.              --- SoupGate-DOS v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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