Results 21 to 30 of about 4,545 (231)

A One Year Landsat 8 Conterminous United States Study of Cirrus and Non-Cirrus Clouds

Remote Sensing, 2015
The first year of available Landsat 8 data over the conterminous United States (CONUS), composed of 11,296 acquisitions sensed over more than 11 thousand million 30 m pixel locations, was analyzed comparing the spatial and temporal incidence of 30 m ...
Valeriy Kovalskyy, David P. Roy
doaj   +1 more source

Changes in Supersaturation Inside and Around Arctic Cirrus during Warm Air Intrusion Events [PDF]

EPJ Web of Conferences
Cirrus clouds play a significant role in the radiative processes in the upper troposphere. Depending on the ambient conditions during their formation their micro- and macro-physical characteristics might differ, leading to different and potentially ...
Dekoutsidis Georgios, Grofl Silke, Wirth Martin   +2 more
doaj   +1 more source

Investigating an indirect aviation effect on mid-latitude cirrus clouds – linking lidar-derived optical properties to in situ measurements [PDF]

Atmospheric Chemistry and Physics, 2023
Aviation has a large impact on the Earth's atmosphere and climate by various processes. Line-shaped contrails and contrail cirrus clouds lead to changes in the natural cirrus cloud cover and have a major contribution to the effective radiative forcing ...
S. Groß, T. Jurkat-Witschas, Q. Li, M. Wirth, B. Urbanek, M. Krämer, M. Krämer, R. Weigel, C. Voigt, C. Voigt   +9 more
doaj   +1 more source

On the Transition of Contrails into Cirrus Clouds

Journal of the Atmospheric Sciences, 2000
In situ observations of the microphysical properties of upper-tropospheric contrails and cirrus clouds have been performed during more than 15 airborne missions over central Europe. Experimental and technical aspects concerning in situ characterization of ice clouds with the help of optical and nonoptical detection methods (preferably FSSP-300 and ...
Schröder, F., Kärcher, B., Duroure, C., Ström, J., Petzold, A., Gayet, J. F., Strauß, B., Wendling, P., Borrmann, S.   +8 more
openaire   +4 more sources

Cirrus and water vapor in the tropical tropopause layer observed by Upper Atmosphere Research Satellite (UARS) [PDF]

, 2003
The Microwave Limb Sounder (MLS) on Upper Atmosphere Research Satellite (UARS) is sensitive to water vapor and ozone in the lower stratosphere. The Cryogenic Limb Array Etalon Spectrometer (CLAES), another of the instruments on UARS, has a spatial and ...
Billingham, A., Harwood, R. S., Clark, H. L., Pumphrey, H. C.   +3 more
core   +1 more source

The effects of warm-air intrusions in the high Arctic on cirrus clouds [PDF]

Atmospheric Chemistry and Physics
Warm-air intrusions (WAIs) are responsible for the transportation of warm and moist air masses from the mid-latitudes into the high Arctic (> 70° N). In this work, we study cirrus clouds that form during WAI events (WAI cirrus) and during undisturbed ...
G. Dekoutsidis, M. Wirth, S. Groß
doaj   +1 more source

A decadal cirrus clouds climatology from ground-based and spaceborne lidars above the south of France (43.9° N–5.7° E) [PDF]

Atmospheric Chemistry and Physics, 2013
This study provides an analysis of cirrus cloud properties at midlatitude in the southern part of France from ground-based and spaceborne lidars. A climatology of cirrus cloud properties and their evolution over more than 12 yr is presented and compared ...
C. Hoareau, P. Keckhut, V. Noel, H. Chepfer, J.-L. Baray   +4 more
doaj   +1 more source

A microphysics guide to cirrus clouds – Part 1: Cirrus types [PDF]

Atmospheric Chemistry and Physics, 2016
Abstract. The microphysical and radiative properties of cirrus clouds continue to be beyond understanding and thus still represent one of the largest uncertainties in the prediction of the Earth's climate (IPCC, 2013). Our study aims to provide a guide to cirrus microphysics, which is compiled from an extensive set of model simulations, covering the ...
M. Krämer, C. Rolf, A. Luebke, A. Luebke, A. Afchine, N. Spelten, A. Costa, J. Meyer, J. Meyer, M. Zöger, J. Smith, R. L. Herman, B. Buchholz, B. Buchholz, V. Ebert, D. Baumgardner, S. Borrmann, M. Klingebiel, M. Klingebiel, L. Avallone, L. Avallone   +20 more
openaire   +6 more sources

MST radar and polarization lidar observations of tropical cirrus [PDF]

Annales Geophysicae, 2001
Significant gaps in our understanding of global cirrus effects on the climate system involve the role of frequently occurring tropical cirrus. Much of the cirrus in the atmosphere is largely due to frequent cumulus and convective activity in the ...
Y. Bhavani Kumar, V. S. Siva Kumar, A. R. Jain, P. B. Rao   +3 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
V. A. Yushkov, Santacesaria, Vincenzo, Flentje, H., Adriani, A., Luo, Beiping, C. Kiemle, Di Donfrancesco, Guido, Khattatov, Vyacheslav, Toci, Guido, R. A. MacKenzie, Volk, C.M., MacKenzie, R., Schiller, C., MacKenzie, R. A., Th. Peter, Carslaw, Kenneth S., Santacesaria, V., H. Flentje, Yushkov, Vladimir, Borrmann, Stephan, MacKenzie, Robert A., MacKenzie, A.R., Luo, B. P., Kiemle, Christoph, Mazzinghi, Piero, Cairo, F., Yushkov, Vladimir A., Carslaw, K., Flentje, Harald, Rudakov, Vladimir V., T. Trautmann, Noone, K., Noone, Kevin, Luo, B., P. Mazzinghi, K. Noone, Ström, J., Kiemle, C., Thomas, Andreas, G. Toci, Mazzinghi, P., Di Don-Francesco, Guido, Beuermann, J., C. Schiller, Mitev, V., Wirth, M., Khattatov, V., Trautmann, T., S. Borrmann, Volk, C.-Michael, J. Beuermann, Wernli, H., Di Donfrancesco, G., Carslaw, K.S., Schiller, Cornelius, C. M. Volk, Peter, Thomas, V. Rudakov, F. Cairo, Thomas, A., Stefanutti, Leopoldo, Trautmann, Thomas, Cairo, Francesco, MacKenzie, Robert, Strom, Johan, Carslaw, K. S., Di Don-Francesco, G., B. P. Luo, Beuermann, Jürgen, A. Adriani, Borrmann, S., Rudakov, V., J. Strom, Volk, C., V. Mitev, V. Santacesaria, V. Khattatov, Peter, Th., Yushkov, V., K. S. Carslaw, Volk, C. M., A. Thomas, L. Stefanutti, Adriani, Alberto, M. Wirth, Peter, T., Yushkov, V. A., Stefanutti, L., G. Di Donfrancesco, Toci, G., Wirth, Martin, Mitev, Valentin   +91 more
core   +1 more source