CO2 – Page 5 – Shamskm: A site to exchange knowledge and solutions

Acid raid, ozone depletion contributed to ancient extinction

By Guest PostDecember 2, 2013Science3d modeling technique, acid raid, ancient extinction, arctic siberia, atmospheric effects, base, benjamin black, carbon dioxide, christine shields, CO2, earth history, ecological diversity, fluctuations in ph, global ozone collapse, jean francois lamarque, jeffrey kiehl, kotuy river, linda elkins tanton, mass extinction, massachusetts institute, ozone depletion, permian mass extinction, permian period, rise of dinosaurs, russia, Siberia, siberian traps, so2, sulfur dioxide, Technology, terrestrial species, ultraviolet radiation, volcanic eruptions, volcanic rock, volcanic sequence

Washington, D.C.— Around 250 million years ago, at the end of the Permian period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth’s history. Some researchers have suggested that this extinction was triggered by contemporaneous volcanic eruptions in Siberia. New results from a team including Director of Carnegie’s Department of Terrestrial Magnetism Linda Elkins-Tanton show that the atmospheric effects of these eruptions could have been devastating. Their work is published in Geology.

The mass extinction included the sudden loss of more than 90 percent of marine species and more than 70 percent of terrestrial species and set the stage for the rise of the dinosaurs. The fossil record suggests that ecological diversity did not fully recover until several million years after the main pulse of the extinction. (more…)

Carbon hotspots: Rivers and streams leak more CO2 than thought

By Guest PostNovember 22, 2013EnvironmentAmazon, annual rainfall, atmosphere, carbon budget, carbon dioxide, carbon hotspots, central america, CO2, co2 evasion rate, concentration of co2, david butman, ecosystem, field data, flux of co2, global carbon cycle, global dataset, global resource, human activity, hydrochemical database, jens hartmann, percentage of emission, peter a raymond, southeast asia, university of hamburg

The amount of carbon dioxide escaping from rivers and streams into the atmosphere is much larger than previously thought, according to a new study that maps for the first time the flux of CO₂ from inland waters worldwide. Published in the journal Nature, the research reveals the major role these waterways play in the global carbon cycle, the authors said.

“This study solidifies the significance of inland waters as conduits of exchange and provides a framework for inclusion of this exchange in regional and global studies,” said lead author Peter A. Raymond, a professor of ecosystem ecology at the Yale School of Forestry & Environmental Studies (F&ES). “Understanding how ecosystems exchange carbon is important, as they currently offset a significant percentage of emissions caused by human activity.” (more…)

Creating fuel from sunlight

By Guest PostOctober 29, 2013Environment, Sciencecarbon dioxide byproduct, CO2, components of syngas, creating fuel, energy mix, fossil fuel, from, jane davidson, liquid hydrocarbon fuel, methane, natural, next generation, solar power, solar simulator, sunlight, syngas, synthetic gas, tom chase, university of minnesota

Turning fossil fuel into energy is easy: You just burn it. And live with the carbon dioxide byproduct. What if we could reverse the process and turn water and carbon dioxide back into fuel?

A dream solution, but it may seem like trying to put the genie back in the bottle. (more…)

6 Reasons to Consider Powering Your House with Wind Turbines

By Guest PostOctober 23, 2013Environmentac, aiden korr, clean energy, CO2, dc current, electricity for free, energy, environmentalist, green house gases, house, kw, means of a generator, methane, mr renewables, power company, raw kinetic energy, renewable energy, rotational energy, solar, system, wind turbines

Wind energy is one of the cleanest forms of renewable energy along with solar. This is the main reason why wind turbines were some of the very first form of clean energy producers adopted not only by governments, but also people to power their homes. They cost relatively less when compared to installing solar panels.

Reasons to consider powering your house with wind turbines

#1 Contribute To Your Community

Keep your head high and feel proud, you are going to contribute to your community. You can’t obviously store all of the energy that will be produced by your system. You will be able to export excess energy produced by your turbines to the local grid and share the electricity with your neighbors. (more…)

Warme und saure Sintflut?

By Guest PostSeptember 30, 2013Environment, Natureantarktis, climate change, CO2, co2 konzentration, groenlands, intergovernmental panel, ipcc, juergen freund, klimaschutz, klimawandel, kohlensaeure, kontinental eisschilde, korallenriffe, marine oekosysteme, meeresschutz, oekosysteme, ozeane, saure sintflut, stockholm, warme, wwf

WWF zum Klimabericht des IPCC: „Klimaschutz und Meeresschutz verbinden“ zum Klimabericht des IPCC: „Klimaschutz und Meeresschutz verbinden“

Der vom Menschen gemachte Klimawandel hat stärkere Auswirkungen auf die Weltmeere als bislang bekannt. Dies geht aus den heute in Stockholm vorgestellten Ergebnissen des Klimabericht des IPCC (Intergovernmental Panel of Climate Change) hervor. Die vom Menschen verursachten CO2-Emissionen wirken direkt auf die Ozeane: Die Meere werden saurer, weil das Meerwasser CO2 aus der Atmosphäre aufnimmt und sich daraus Kohlensäure bildet. (more…)

MU Scientist Finds Late Cretaceous Period Was Likely Ice-free

By Guest PostSeptember 28, 2013Environment, ScienceAntarctica, benthic foraminifera, carbon dioxide levels, CO2, environmental conditions, fossilized shells, grain of salt, greenland, ice free, ken macleod, late cretaceous climate, late cretaceous period, modern warming, planktic, ppm, single celled organisms, Tanzania, university of missouri

Study results could foreshadow earth’s future climate, MU researcher says

COLUMBIA, Mo. – For years, scientists have thought that a continental ice sheet formed during the Late Cretaceous Period more than 90 million years ago when the climate was much warmer than it is today. Now, a University of Missouri researcher has found evidence suggesting that no ice sheet formed at this time. This finding could help environmentalists and scientists predict what the earth’s climate will be as carbon dioxide levels continue to rise.

“Currently, carbon dioxide levels are just above 400 parts per million (ppm), up approximately 120 ppm in the last 150 years and rising about 2 ppm each year,” said Ken MacLeod, a professor of geological sciences at MU. “In our study, we found that during the Late Cretaceous Period, when carbon dioxide levels were around 1,000 ppm, there were no continental ice sheets on earth. So, if carbon dioxide levels continue to rise, the earth will be ice-free once the climate comes into balance with the higher levels.” (more…)

„Die große Chance, die Arktis zu schützen, bevor sie zerstört wird“

By Guest PostSeptember 16, 2013EnvironmentCO2, die arktis, die grosse chance, dms, esperanza, expedition, fjord wasser, geomar helmholtz zentrum, Greenpeace, greenpeace schiff esperanza, groenland, iris menn, kohlensaeure, meeresoekosystem, michael sswat, organischen kohlenstoff, ozeanforschung kiel, ozeanversauerung, savethearctic, universitaet maine, usa, zu schuetzen

Wie wirkt sich die Versauerung der Ozeane in 20, 40 oder gar 100 Jahren aus? Heute hat das GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel die Ergebnisse eines Experiments aus dem Jahr 2010 veröffentlicht – das Greenpeace mit einer Schiffstour in die Arktis unterstützt hat. Iris Menn, Meeresbiologin, erinnert sich im Interview an die Expedition.

Der zunehmende Ausstoß von Treibhausgasen macht nicht nur dem Klima zu schaffen. Unsere Meere nehmen CO2 aus der Atmosphäre auf, das sich im Wasser zu Kohlensäure wandelt. Steigender CO2-Ausstoß lässt auch die Aufnahme in das Meer steigen – das Wasser wird sauer. (more…)

Klimaneutraler Watt-Tourismus?

By Guest PostSeptember 13, 2013EnvironmentCO2, co2 verbrauch, daenemark, deutschland, hans ulrich roesner, klimafreundlichen urlaub, klimaneutral, klimaneutraler watt tourismus, klimaschutz, nesco, niederlanden, nordseekueste, prowad, schleswig holstein, tourismus, urlaubstag, wattenmeer, wwf

WWF-Studie: 10-Punkte-Plan für klimafreundlichen Urlaub am Wattenmeer

Hamburg/Husum – Ein Urlaub an der Nordseeküste ist zwar weit klimafreundlicher als eine Flugreise in entfernte Weltregionen, dennoch ist die Klimabelastung noch viel zu hoch. Das geht aus einer heute vom WWF veröffentlichten Machbarkeitsstudie zu klimafreundlichem Tourismus in der Wattenmeer-Region hervor. Eine jährliche Belastung von 1,5 Mio. t CO2-Äquivalenten durch den in Deutschland, Dänemark und den Niederlanden stattfindenden Wattenmeer-Tourismus ermittelt die vom Kieler „Institut für Tourismus- und Bäderforschung in Nordeuropa“ durchgeführte Studie. Dies entspricht 148 kg CO2-Äquivalenten pro Urlaubsreise bzw. 15 kg CO2-Äquivalenten pro Person und Urlaubstag. Von „klimaneutral“ ist der Urlaub am Wattenmeer also noch weit entfernt. Für die Umweltschützer liegt die Lösung jedoch nicht im Verzicht auf den Nordseeurlaub: In einem 10-Punkte-Plan schlägt der WWF vor allem Umstellungen im Verkehrsbereich, energetische Gebäudesanierung, Nutzung erneuerbarer Energien, Transparenz beim CO2-Verbrauch der touristischen Angebote, eine bevorzugt regionale Verpflegung der Gäste, sowie eine bessere Kooperation der Akteure vor. (more…)

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