Wolfgang Seiler (born 22 January 1940 in Remscheid) is a German biogeochemist and climatologist. Seiler was Director of the Institute of Meteorology and Atmospheric Environmental Research (IMK-IFU) of the Karlsruhe Institute of Technology, and is a pioneer in basic research in biogeochemistry.
Seiler studied meteorology from 1961 to 1969 at the University of Mainz and graduated with a diploma. In 1970 he received his doctorate in meteorology (Dr. rer. nat.). Ten years later he completed his Habilitation at the ETH Zurich in atmospheric chemistry. From 1980 to 1982 he was lecturer at the ETH Zurich. From 1980 to 1989 he was a visiting professor at the Georgia Institute of Technology, Atlanta, USA, and from 1989 to 1990 a Research Professor of Environmental Sciences at the University of Virginia, Charlottesville, USA.
Seiler worked as a research assistant at the Institute of Meteorology, University of Mainz (1967-1969) and was head of the research group "trace gases" at the Max Planck Institute for Chemistry (MPI), Mainz (1969-1986). In 1978 he was a researcher at the National Center for Atmospheric Research (NCAR), in Boulder, Colorado, where he collaborated with Paul J. Crutzen and Ralph J. Cicerone. [1] In 2001 Seiler was a Highly Cited Researcher (one of world's leading researchers) in the category Geosciences and Ecology/Environment. [2]
From 1986 to 2001, Seiler was the Director of the Fraunhofer Institute for Atmospheric Environmental Research, [3] and from 2001 to September 2007 the Director of Institute of Meteorology and Atmospheric Environmental Research (IMK-IFU) of the Forschungszentrum Karlsruhe (now Karlsruhe Institute of Technology). [4] After he retired, Professor Seiler became an environmental officer [5] (voluntary) of the City of Garmisch-Partenkirchen. Together with Ralf Klemens Stappen he served project leader of the pilot project Sustainable Garmisch-Partenkirchen [6] (Munich 2018, Bid for the 2018 Winter Olympics) and Executive of the Energiewende Oberland. [7]
For more, see [9]
The scientific community has been investigating the causes of climate change for decades. After thousands of studies, it came to a consensus, where it is "unequivocal that human influence has warmed the atmosphere, ocean and land since pre-industrial times." This consensus is supported by around 200 scientific organizations worldwide, The dominant role in this climate change has been played by the direct emissions of carbon dioxide from the burning of fossil fuels. Indirect CO2 emissions from land use change, and the emissions of methane, nitrous oxide and other greenhouse gases play major supporting roles.
Global warming potential (GWP) is an index to measure how much infrared thermal radiation a greenhouse gas would absorb over a given time frame after it has been added to the atmosphere. The GWP makes different greenhouse gases comparable with regard to their "effectiveness in causing radiative forcing". It is expressed as a multiple of the radiation that would be absorbed by the same mass of added carbon dioxide, which is taken as a reference gas. Therefore, the GWP has a value of 1 for CO2. For other gases it depends on how strongly the gas absorbs infrared thermal radiation, how quickly the gas leaves the atmosphere, and the time frame being considered.
The Wank is a mountain in southern Germany, situated in the Loisach valley close to the Austrian border in the southwestern Ester Mountains range near Garmisch-Partenkirchen. It rises from about 700 metres (2,300 ft) above mean sea level up to 1,780 metres (5,840 ft) at the summit. The mountain is crowned by a grassy summit which has views over Garmisch-Partenkirchen and the surrounding region. The summit can be reached via the eponymous Wankbahn, a cable car system that runs during the summer months, or by a network of footpaths that criss-cross the area. A mountain hut on the summit, the Wank-Haus, provides food and accommodation, and a nearby scientific observatory plays a role in monitoring atmospheric and climatic conditions. The Wank is a destination for hikers, day-trippers from Garmisch-Partenkirchen and paragliders. In June 2024, the Scotland national football team set up their UEFA Euro 2024 training base codenamed "Camp Chug" on the bonnie bonnie banks of Mount Wank.
Non-methane volatile organic compounds (NMVOCs) are a set of organic compounds that are typically photochemically reactive in the atmosphere—marked by the exclusion of methane. NMVOCs include a large variety of chemically different compounds, such as benzene, ethanol, formaldehyde, cyclohexane, 1,1,1-trichloroethane and acetone. Essentially, NMVOCs are identical to volatile organic compounds (VOCs), but with methane excluded. Methane is excluded in air-pollution contexts because it is not toxic. It is however a very potent greenhouse gas, with low reactivity and thus a long lifetime in the atmosphere. An important subset of NMVOCs are the non-methane hydrocarbons (NMHCs).
The Max Planck Institute for Chemistry is a non-university research institute under the auspices of the Max Planck Society in Mainz, Germany. It was created as the Kaiser Wilhelm Institute for Chemistry in 1911 in Berlin.
The eddy covariance is a key atmospheric measurement technique to measure and calculate vertical turbulent fluxes within atmospheric boundary layers. The method analyses high-frequency wind and scalar atmospheric data series, gas, energy, and momentum, which yields values of fluxes of these properties. It is a statistical method used in meteorology and other applications to determine exchange rates of trace gases over natural ecosystems and agricultural fields, and to quantify gas emissions rates from other land and water areas. It is frequently used to estimate momentum, heat, water vapour, carbon dioxide and methane fluxes.
The atmosphere of Mars is the layer of gases surrounding Mars. It is primarily composed of carbon dioxide (95%), molecular nitrogen (2.85%), and argon (2%). It also contains trace levels of water vapor, oxygen, carbon monoxide, hydrogen, and noble gases. The atmosphere of Mars is much thinner and colder than Earth's having a max density 20g/m3 with a temperature generally below zero down to -60 Celsius. The average surface pressure is about 610 pascals (0.088 psi) which is 0.6% of the Earth's value.
In climate science, longwave radiation (LWR) is electromagnetic thermal radiation emitted by Earth's surface, atmosphere, and clouds. It is also referred to as terrestrial radiation. This radiation is in the infrared portion of the spectrum, but is distinct from the shortwave (SW) near-infrared radiation found in sunlight.
Arctic methane emissions contribute to a rise in methane concentrations in the atmosphere. Whilst the Arctic region is one of many natural sources of the greenhouse gas methane, there is nowadays also a human component to this due to the effects of climate change. In the Arctic, the main human-influenced sources of methane are thawing permafrost, Arctic sea ice melting, clathrate breakdown and Greenland ice sheet melting. This methane release results in a positive climate change feedback, as methane is a powerful greenhouse gas. When permafrost thaws due to global warming, large amounts of organic material can become available for methanogenesis and may therefore be released as methane.
Greenhouse gases (GHGs) are the gases in the atmosphere that raise the surface temperature of planets such as the Earth. What distinguishes them from other gases is that they absorb the wavelengths of radiation that a planet emits, resulting in the greenhouse effect. The Earth is warmed by sunlight, causing its surface to radiate heat, which is then mostly absorbed by greenhouse gases. Without greenhouse gases in the atmosphere, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F).
Atmospheric methane is the methane present in Earth's atmosphere. The concentration of atmospheric methane is increasing due to methane emissions, and is causing climate change. Methane is one of the most potent greenhouse gases. Methane's radiative forcing (RF) of climate is direct, and it is the second largest contributor to human-caused climate forcing in the historical period. Methane is a major source of water vapour in the stratosphere through oxidation; and water vapour adds about 15% to methane's radiative forcing effect. The global warming potential (GWP) for methane is about 84 in terms of its impact over a 20-year timeframe, and 28 in terms of its impact over a 100-year timeframe.
Greenhouse gas emissions from wetlands of concern consist primarily of methane and nitrous oxide emissions. Wetlands are the largest natural source of atmospheric methane in the world, and are therefore a major area of concern with respect to climate change. Wetlands account for approximately 20–30% of atmospheric methane through emissions from soils and plants, and contribute an approximate average of 161 Tg of methane to the atmosphere per year.
The Total Carbon Column Observing Network (TCCON) is a global network of instruments that measure the amount of carbon dioxide, methane, carbon monoxide, nitrous oxide and other trace gases in the Earth's atmosphere. The TCCON began in 2004 with the installation of the first instrument in Park Falls, Wisconsin, USA, and has since grown to 23 operational instruments worldwide, with 7 former sites.
The atmospheric carbon cycle accounts for the exchange of gaseous carbon compounds, primarily carbon dioxide, between Earth's atmosphere, the oceans, and the terrestrial biosphere. It is one of the faster components of the planet's overall carbon cycle, supporting the exchange of more than 200 billion tons of carbon in and out of the atmosphere throughout the course of each year. Atmospheric concentrations of CO2 remain stable over longer timescales only when there exists a balance between these two flows. Methane, Carbon monoxide (CO), and other human-made compounds are present in smaller concentrations and are also part of the atmospheric carbon cycle.
Meinrat O. Andreae, born in 1949 in Augsburg, is a German biogeochemist. Since 1987, he has worked as Director and Scientific Member at the Max Planck Institute for Chemistry (MPIC) in Mainz.
Space-based measurements of carbon dioxide are used to help answer questions about Earth's carbon cycle. There are a variety of active and planned instruments for measuring carbon dioxide in Earth's atmosphere from space. The first satellite mission designed to measure CO2 was the Interferometric Monitor for Greenhouse Gases (IMG) on board the ADEOS I satellite in 1996. This mission lasted less than a year. Since then, additional space-based measurements have begun, including those from two high-precision satellites. Different instrument designs may reflect different primary missions.
Increasing methane emissions are a major contributor to the rising concentration of greenhouse gases in Earth's atmosphere, and are responsible for up to one-third of near-term global heating. During 2019, about 60% of methane released globally was from human activities, while natural sources contributed about 40%. Reducing methane emissions by capturing and utilizing the gas can produce simultaneous environmental and economic benefits.
Hans Peter Schmid is a climatologist. He is director of the Institute of Meteorology and Climate Research - Atmospheric Environmental Research of the Karlsruhe Institute of Technology (KIT/IMK-IFU) based in Garmisch-Partenkirchen. He is also Professor of Atmospheric Environmental Research at the Center of Life and Food Sciences Weihenstephan at the Technical University of Munich (TUM).
Natalie Mahowald is an American Earth scientist who is the Irving Porter Church Professor of Engineering at Cornell University. Her research considers atmospheric transport of biogeochemically-relevant species, and the impact of humans on their environments.