Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ralf Meerkötter"'
Autor:
Andreas Marsing, Ralf Meerkötter, Romy Heller, Tina Jurkat-Witschas, Stefan Kaufmann, Christiane Voigt
The radiative energy budget in the Arctic undergoes a rapid transformation compared to global mean changes. Understanding the role of cirrus in this system is vital, as they interact with short- and long-wave radiation at the top of the tropopause, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf482fc757b6cb12a5011d7174eb754d
https://doi.org/10.5194/egusphere-egu22-8114
https://doi.org/10.5194/egusphere-egu22-8114
Autor:
Ralf Meerkötter, Kai Schennetten
Publikováno v:
Journal of Radiological Protection. 40:181-196
A radiative transfer model for the determination of UV radiation on arbitrarily oriented surfaces is validated by spectral measurements taken directly on the inner surface of a cockpit window of an Airbus A321-231 during a flight from Frankfurt, Germ
Autor:
Valerian Hahn, Ralf Meerkötter, Christiane Voigt, Sonja Gisinger, Daniel Sauer, Valéry Catoire, Volker Dreiling, Hugh Coe, Cyrille Flamant, Stefan Kaufmann, Jonas Kleine, Peter Knippertz, Manuel Moser, Philip Rosenberg, Hans Schlager, Alfons Schwarzenboeck, Jonathan Taylor
Publikováno v:
Atmospheric Chemistry and Physics Discussions
Atmospheric Chemistry and Physics Discussions, In press, pp.(discussion). ⟨10.5194/acp-2022-795⟩
Atmospheric Chemistry and Physics Discussions, In press, pp.(discussion). ⟨10.5194/acp-2022-795⟩
Reflection of solar radiation by tropical low-level clouds has an important cooling effect on climate and leads to decreases in surface temperatures. Still, the effect of pollution on ubiquitous tropical continental low-level clouds and the investiga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7953e5c1ec79dd31f5242fbe814c43d
https://doi.org/10.5194/acp-2022-795
https://doi.org/10.5194/acp-2022-795
Autor:
Andreas Marsing, Ralf Meerkötter, Romy Heller, Stefan Kaufmann, Tina Jurkat-Witschas, Martina Krämer, Christian Rolf, Christiane Voigt
The radiative energy budget in the Arctic undergoes a rapid transformation compared to global mean changes. Understanding the role of cirrus in this system is vital, as they interact with short- and long-wave radiation and the presence of cirrus can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::973c7597e3d95210f6d60d4fbf2562f4
https://juser.fz-juelich.de/record/908555
https://juser.fz-juelich.de/record/908555
Autor:
Ulrich Pöschl, Thilo Erbertseder, Hans Schlager, Patrick Jöckel, Johannes Schneider, Daniel Sauer, Ulrich Schumann, Mariano Mertens, Andreas Marsing, Christiane Voigt, Luca Bugliaro, Valerian Hahn, Mira L. Pöhlker, Joachim Curtius, Christopher Pöhlker, Andrea Pozzer, Qiang Li, Jos Lelieveld, Ralf Meerkötter, Laura Tomsche
Worldwide regulations to control the COVID-19 pandemic caused significant reductions in ground and airborne transportation in spring 2020. This unprecedented situation provided the unique opportunity to directly measure the less perturbed atmosphere,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::723b4e982d86543cbe573404bee31cc8
https://doi.org/10.5194/egusphere-egu21-13134
https://doi.org/10.5194/egusphere-egu21-13134
Autor:
Markus Degünther, Ralf Meerkötter
Publikováno v:
Geophysical Research Letters. 28:1683-1686
Satellite UV mapping is usually based on the independent pixel approximation (IPA) which neglects horizontal photon transport between adjacent columns. Horizontal inhomogeneity of cloud fields therefore causes uncertainties in the derived UV radiatio
Autor:
Ralf Meerkötter, Markus Degünther
Publikováno v:
Journal of Geophysical Research: Atmospheres. 105:22755-22761
The influence of inhomogeneous surface albedo on UV irradiance is investigated assuming the sky to be overcast by a horizontally homogeneous stratus cloud. From calculations with a three-dimensional (3-D) radiative transfer model the snow-induced rel
Publikováno v:
Atmospheric Physics ISBN: 9783642301827
Earth’s structure today is manifested in the known distribution of continents and oceans, in a variety of surface types, as well as in a surrounding atmosphere consisting of gaseous constituents, aerosols, and clouds. This complex composition defin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd4644dfbf5c033ec8502ba1259bde1a
https://doi.org/10.1007/978-3-642-30183-4_4
https://doi.org/10.1007/978-3-642-30183-4_4
Autor:
Ralf Meerkötter, Luca Bugliaro
Publikováno v:
Atmospheric Chemistry and Physics, Vol 9, Iss 5, Pp 1767-1778 (2009)
ResearcherID
ResearcherID
This study shows that it is possible to retrieve the temporal evolution of cloud base heights in convective broken cloud fields from data of the SEVIRI instrument onboard the geostationary satellite Meteosat-9. Presented and discussed are time depend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e58add0f153b4534791fe3acd7e6546
https://elib.dlr.de/58359/
https://elib.dlr.de/58359/
Autor:
Ralf Meerkötter, Tobias Zinner
[1] A method is proposed for estimating base heights of convective clouds from satellite data. The approach takes advantage of the fact that convective water clouds appear as geometrically and optically thin clouds near an approximately constant cond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c11b646a8374f379762bcbc1065d3a89
https://elib.dlr.de/46275/
https://elib.dlr.de/46275/