Results 31 to 40 of about 5,933 (229)

Radiative forcing by contrails [PDF]

Annales Geophysicae, 1999
Abstract. A parametric study of the instantaneous radiative impact of contrails is presented using three different radiative transfer models for a series of model atmospheres and cloud parameters. Contrails are treated as geometrically and optically thin plane parallel homogeneous cirrus layers in a static atmosphere. The ice water content is varied as
R. Meerkötter, U. Schumann, U. Schumann, D. R. Doelling, P. Minnis, T. Nakajima, Y. Tsushima   +6 more
openaire   +5 more sources

Simulated radiative forcing from contrails and contrail cirrus [PDF]

Atmospheric Chemistry and Physics, 2013
Abstract. A comprehensive general circulation model including ice supersaturation is used to estimate the climate impact of aviation induced contrails. The model uses a realistic aviation emissions inventory for 2006 to initiate contrails, and allows them to evolve consistently with the model hydrologic cycle.
C.-C. Chen, A. Gettelman
openaire   +3 more sources

Global aviation contrail climate effects from 2019 to 2021 [PDF]

Atmospheric Chemistry and Physics
The current best-estimate of the global annual mean radiative forcing (RF) attributable to contrail cirrus is thought to be 3 times larger than the RF from aviation's cumulative CO2 emissions.
R. Teoh, Z. Engberg, U. Schumann, C. Voigt, C. Voigt, M. Shapiro, S. Rohs, M. E. J. Stettler   +7 more
doaj   +1 more source

H-alpha features with hot onsets. II. A contrail fibril

, 2016
The solar chromosphere observed in H-alpha consists mostly of narrow fibrils. The longest typically originate in network or plage and arch far over adjacent internetwork.
Rutten, R. J., van der Voort, L. H. M. Rouppe   +1 more
core   +1 more source

Contrail cirrus radiative forcing for future air traffic [PDF]

Atmospheric Chemistry and Physics, 2019
The climate impact of air traffic is to a large degree caused by changes in cirrus cloudiness resulting from the formation of contrails. Contrail cirrus radiative forcing is expected to increase significantly over time due to the large projected ...
L. Bock, U. Burkhardt
doaj   +1 more source

Properties of individual contrails: a compilation of observations and some comparisons [PDF]

Atmospheric Chemistry and Physics, 2017
Mean properties of individual contrails are characterized for a wide range of jet aircraft as a function of age during their life cycle from seconds to 11.5 h (7.4–18.7 km altitude, −88 to −31 °C ambient temperature), based on a compilation of about 230 ...
U. Schumann, R. Baumann, D. Baumgardner, S. T. Bedka, D. P. Duda, V. Freudenthaler, J.-F. Gayet, A. J. Heymsfield, P. Minnis, M. Quante, E. Raschke, H. Schlager, M. Vázquez-Navarro, C. Voigt, Z. Wang   +14 more
doaj   +1 more source

The global spatiotemporal distribution of the mid-tropospheric CO2 concentration and analysis of the controlling factors [PDF]

, 2019
The atmospheric infrared sounder (AIRS) provides a robust and accurate data source to investigate the variability of mid-tropospheric CO2 globally.
Cao, Liangzhong, Chen, Xi, De Maeyer, Philippe, Kurban, Alishir, Ochege, Friday Uchenna, Pan, Tao, Qian, Jin, Qin, Xiugong, Yin, Zuozhong, Zhang, Chi   +9 more
core   +1 more source

On the Life Cycle of Individual Contrails and Contrail Cirrus [PDF]

Meteorological Monographs, 2017
Abstract The life cycle of individual (initially line shaped) contrails behind aircraft and of contrail cirrus (aged contrails mixed with other ice clouds) is described. The full contrail life cycle is covered, from ice formation for given water, heat, and particulate emissions; to changes in the jet, wake, and dispersion phases; through
Schumann, Ulrich, Heymsfield, Andrew J.
openaire   +3 more sources

Composition and distribution of aerosols over the North Atlantic during the Subsonic Assessment Ozone and Nitrogen Oxide Experiment (SONEX) [PDF]

, 2000
We report the mixing ratios of aerosol-associated soluble ions (focusing on SO4= and NO3−) and HNO3 over the North Atlantic during NASA\u27s Subsonic Assessment Ozone and Nitrogen Oxide Experiment (SONEX).
Dibb, Jack E., Scheuer, Eric, Talbot, R.
core   +2 more sources

Contrail Formation Within Cirrus: Contrail Induced Perturbations and Cirrus Adjustments

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Contrail formation constitutes a large fraction of the aviation climate impact. But only part of the effect has been studied in detail, as research focused on contrail formation in cloud‐free air. Even though it is known that the impact of contrail formation within cirrus can be detected in space‐born remote sensing data, little research has ...
Pooja Verma, Ulrike Burkhardt
wiley   +1 more source