In Situ Measurements of Cirrus Clouds on a Global Scale
| Autor: | Martin Gallagher, Martina kraemer, Thomas Choularton, Darrel Baumgardner, Gary Lloyd, Andreas Petzold |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
In situ
Atmospheric Science Scale (ratio) Aircraft 010504 meteorology & atmospheric sciences Cirrus cirrus clouds 010501 environmental sciences Environmental Science (miscellaneous) lcsh:QC851-999 Convergence zone 01 natural sciences complex mixtures Microphysics Troposphere Altitude Clouds ddc:550 microphysics Remote sensing 0105 earth and related environmental sciences Cloud fraction Northern Hemisphere technology industry and agriculture in situ Jet stream Climatology aviation Environmental science lcsh:Meteorology. Climatology sense organs Aviation human activities aircraft |
| Zdroj: | Atmosphere 12(1), 41-(2021). doi:10.3390/atmos12010041 Atmosphere, Vol 12, Iss 41, p 41 (2021) Atmosphere Volume 12 Issue 1 Lloyd, G, Gallagher, M, Choularton, T, Krämer, M, Andreas, P & Baumgardner, D 2021, ' In situ measurements of cirrus clouds on a global scale ', Atmosphere, vol. 12, no. 1, 41 . https://doi.org/10.3390/atmos12010041 EGU General Assembly, virtuell, virtuell, 2021-04-19-2021-04-30 Lloyd, G, Gallagher, M, Choularton, T, Krämer, M, Petzold, A & Baumgardner, D 2020, ' In-Situ Measurements of Cirrus Clouds on a Global Scale ', Atmosphere, vol. 12, no. 1, 41 . https://doi.org/10.1002/essoar.10504376.1, https://doi.org/10.3390/atmos12010041 |
| DOI: | 10.5194/egusphere-egu21-10885 |
| Popis: | Observations of high-altitude cirrus clouds are reported from measurements made during the routine monitoring of cloud properties on the commercial aircraft as part of the In-Service Aircraft for a Global Observing System. The increasing global scale of the measurements is revealed, with 7 years of in situ data producing a unique and rapidly growing dataset. We find that cloud fractions measured &ge 10 km at aircraft cruise altitude are representative of seasonal trends associated with the mid-latitude jet stream in the Northern Hemisphere, and the relatively higher cloud fractions are found in tropical regions such as the Inter-Tropical Convergence Zone and South East Asia. Both stratospheric and tropospheric data were used to calculate the cloud fractions routinely experienced by commercial aircraft. Further work is needed for a direct comparison with previous studies that limit cloud fraction calculations to tropospheric data only. The characteristics of these clouds are discussed and the potential different formation mechanisms in different regions assessed. |
| Databáze: | OpenAIRE |
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