Results 61 to 70 of about 21,915 (232)

Evidence of nitric acid uptake in warm cirrus anvil clouds during the NASA TC4 campaign [PDF]

, 2010
Uptake of HNO3 onto cirrus ice may play an important role in tropospheric NOx cycling. Discrepancies between modeled and in situ measurements of gas-phase HNO3 in the troposphere suggest that redistribution and removal mechanisms by cirrus ice have been ...
Bansemer, Aaron, Dibb, Jack E., Heymsfield, Andrew J, Rogers, David, Scheuer, Eric, Twohy, Cynthia   +5 more
core   +2 more sources

Transport to the Extratropical Stratosphere by Overshooting Storms in Idealized Simulations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Deep convection is a significant source of water to the extratropical stratosphere which can alter radiative properties and contribute to ozone loss. Previous studies find it responsible for 40% of mid‐latitude water vapor above 380K. However, the amount of hydration from individual storms and the mechanisms that initiate mixing is less ...
Devin P. Bissell, Christopher J. Nowotarski, Kenneth P. Bowman, Anita D. Rapp   +3 more
wiley   +1 more source

Observation of Cirrus Cloud [PDF]

Nature, 1875
I HAVE just received from the Meteorological Observatory at Upsal, Sweden, a number of blank forms (with instructions in English) for observations of the directions of the cirrus cloud. Copies of these forms I shall have much pleasure in supplying to anyone who may be willing to make observations of these clouds, the systematic and extensive ...
openaire   +1 more source

Impact of Non‐Classical Gravity‐Wave Dynamics on Middle‐Atmosphere Mean Flow and Solar Tides

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Conventional gravity‐wave (GW) parameterizations neglect three aspects of GW dynamics. Instead of momentum and entropy fluxes they use Eliassen‐Palm fluxes, thereby neglecting the possibility that resolved flow are not in geostrophic and hydrostatic balance.
T. Kühner, G. S. Völker, U. Achatz
wiley   +1 more source

Atmospheric Adjustments to In Situ Cirrus Formation in Ice Supersaturated Regions

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract High‐level ice clouds exert a net warming on the climate system because their greenhouse effect outweighs their albedo effect. Focusing on in‐situ cirrus, their formation involves the conversion of upper‐tropospheric water vapor into ice crystals.
Jérémie Juvin‐Quarroz, Audran Borella, Patryk Kiepas, Thomas Dubos, Olivier Boucher, Nicolas Bellouin   +5 more
wiley   +1 more source

Serendipity observations of far infrared cirrus emission in the Spitzer Infrared Nearby Galaxies Survey: Analysis of far-infrared correlations [PDF]

, 2009
We present an analysis of far-infrared dust emission from diffuse cirrus clouds. This study is based on serendipitous observations at 160 microns at high galactic latitude with the Multiband Imaging Photometer (MIPS) onboard the Spitzer Space Telescope ...
Bot, Caroline, Boulanger, Francois, Draine, Bruce, Helou, George, Lagache, Guilaine, Martin, Peter, Miville-Deschenes, Marc-Antoine   +6 more
core   +2 more sources

The Life Cycle of a Stratospheric Smoke Plume as Seen From EarthCARE—Tracking a Plume From Canada to Europe

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract At the end of May 2025, extremely strong wildfires in Canada produced several pyrocumulonimbus clouds lifting the smoke particles up to the lower stratosphere. Stratospheric aerosol optical depths of more than 2.5 were observed by the ATmospheric LiDAR (ATLID) onboard of the Earth Cloud, Aerosol and Radiation Explorer (EarthCARE) satellite ...
Moritz Haarig, Holger Baars, Leonard König, David P. Donovan, Albert Ansmann, Sergey Khaykin, Romain Ceolato, Benedikt Gast, Crisofer Jimenez, Athena A. Floutsi, Robin J. Hogan, Annabel Chantry, Fabien Marnas, Johanna Roschke, Gerd‐Jan van Zadelhoff, Ulla Wandinger   +15 more
wiley   +1 more source

The origin of midlatitude ice clouds and the resulting influence on their microphysical properties [PDF]

Atmospheric Chemistry and Physics, 2016
The radiative role of ice clouds in the atmosphere is known to be important, but uncertainties remain concerning the magnitude and net effects. However, through measurements of the microphysical properties of cirrus clouds, we can better characterize
A. E. Luebke, A. Afchine, A. Costa, J.-U. Grooß, J. Meyer, J. Meyer, C. Rolf, N. Spelten, L. M. Avallone, L. M. Avallone, D. Baumgardner, M. Krämer   +11 more
doaj   +1 more source

Ultrathin Tropical Tropopause Clouds (UTTCs) : I. Cloud morphology and occurrence [PDF]

, 2003
Subvisible cirrus clouds (SVCs) may contribute to dehydration close to the tropical tropopause. The higher and colder SVCs and the larger their ice crystals, the more likely they represent the last efficient point of contact of the gas phase with the ice
Adriani, A., Beuermann, J., Borrmann, S., Cairo, F., Carslaw, K. S., Di Don-Francesco, G., Flentje, H., Khattatov, V., Kiemle, C., Luo, B. P., Mackenzie, R. A., Mazzinghi, P., Mitev, V., Noone, K., Peter, T., Rudakov, V., Santacesaria, V., Schiller, C., Stefanutti, L., Strom, J., Thomas, A., Toci, G., Trautmann, T., Volk, C. M., Wernli, H., Wirth, M., Yushkov, V. A.   +26 more
core   +4 more sources

Influence of Variations in Gravity Wave Properties on Cirrus Ice Number Concentrations Produced by Homogeneous Freezing in the Tropical Tropopause Layer

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract In this study, we examine the impact of variations in gravity wave properties on the ice crystal number concentrations in the tropical tropopause layer (TTL). Analysis of quasi‐Lagrangian superpressure balloon measurements from the Stratéole‐2 campaign shows that high‐frequency waves dominate the occurrence of relatively large vertical wind ...
E. J. Jensen, M. Corcos, B. Kärcher
wiley   +1 more source