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Nitric acid particles in cold thick ice clouds observed at global scale: Link with lightning, temperature, and upper tropospheric water vapor
- Source :
- Journal of Geophysical Research: Atmospheres, Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2007, 112 (D5), pp.D05212. ⟨10.1029/2005JD006602⟩, Journal of Geophysical Research: Atmospheres, 2007, 112 (D5), pp.D05212. ⟨10.1029/2005JD006602⟩
- Publication Year :
- 2007
- Publisher :
- HAL CCSD, 2007.
-
Abstract
- International audience; Signatures of nitric acid particles (NAP) in cold thick ice clouds have been derived from satellite observations. Most NAP are detected in the tropics (9 to 20% of clouds with T < 202.5 K). Higher occurrences were found in the rare midlatitudes very cold clouds. NAP occurrence increases as cloud temperature decreases, and NAP are more numerous in January than July. Comparisons of NAP and lightning distributions show that lightning seems to be the main source of the NOx, which forms NAP in cold clouds over continents. Qualitative comparisons of NAP with upper tropospheric humidity distributions suggest that NAP may play a role in the dehydration of the upper troposphere when the tropopause is colder than 195 K.
- Subjects :
- Atmospheric Science
010504 meteorology & atmospheric sciences
Soil Science
Aquatic Science
[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology
010502 geochemistry & geophysics
Oceanography
Atmospheric sciences
01 natural sciences
Troposphere
Geochemistry and Petrology
Earth and Planetary Sciences (miscellaneous)
ice clouds
0105 earth and related environmental sciences
Earth-Surface Processes
Water Science and Technology
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Ice cloud
Ecology
Paleontology
Forestry
Atmospheric temperature
Lightning
Nap
nitric acid
Geophysics
13. Climate action
Space and Planetary Science
Middle latitudes
global scale
Environmental science
Tropopause
Water vapor
Subjects
Details
- Language :
- English
- ISSN :
- 2169897X and 21698996
- Database :
- OpenAIRE
- Journal :
- Journal of Geophysical Research: Atmospheres, Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2007, 112 (D5), pp.D05212. ⟨10.1029/2005JD006602⟩, Journal of Geophysical Research: Atmospheres, 2007, 112 (D5), pp.D05212. ⟨10.1029/2005JD006602⟩
- Accession number :
- edsair.doi.dedup.....40ebb2de500b2d9fc739c2860ab42ee7