Low Tropospheric Ozone Over the Indo‐Pacific Warm Pool Related to Non‐Electrified Convection
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| Titel: | Low Tropospheric Ozone Over the Indo‐Pacific Warm Pool Related to Non‐Electrified Convection |
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| Autoren: | Clara M. Nussbaumer, Andrea Pozzer, Michael Hewson, Linda Ort, Bianca Krumm, Joseph Byron, Jonathan Williams, Philipp Joppe, Florian Obersteiner, Andreas Zahn, Jos Lelieveld, Horst Fischer |
| Quelle: | Geophysical Research Letters, Vol 52, Iss 5, Pp n/a-n/a (2025) Geophysical Research Letters, 52 (5), e2024GL112788 |
| Verlagsinformationen: | American Geophysical Union (AGU), 2025. |
| Publikationsjahr: | 2025 |
| Schlagwörter: | tropospheric ozone, Indo‐Pacific warm Pool, Earth sciences, in situ observations, ddc:550, QC801-809, Geophysics. Cosmic physics, Australia, lightning, deep convection |
| Beschreibung: | Lightning is the most important source of nitric oxide (NO) in the tropical upper troposphere and controls the formation of tropospheric ozone (). It is associated with deep convection and occurs mostly over continents. The Chemistry of the Atmosphere Field Experiment in the Pacific (CAFE Pacific) was conducted in early 2024 from Cairns, Australia, taking airborne measurements across the Australian continent and the surrounding maritime regions. Based on cloud top properties, lightning data and in situ observations of NO, and carbon monoxide, we show that deep convection occurs over Northern Australia and the Indo‐Pacific Warm Pool. While we identify strong lightning activity over Australia, we observe deep convection in the Warm Pool that is not electrified. Our observations of low in the Warm Pool can be attributed to ‐poor air from the marine boundary layer, which is not replenished by photochemical production from NO at high altitudes. |
| Publikationsart: | Article |
| Dateibeschreibung: | application/pdf |
| Sprache: | English |
| ISSN: | 1944-8007 0094-8276 |
| DOI: | 10.1029/2024gl112788 |
| DOI: | 10.5445/ir/1000180650 |
| Zugangs-URL: | https://doaj.org/article/9ffb72e46e0b474391509f3374403bef https://publikationen.bibliothek.kit.edu/1000180650/159506522 https://publikationen.bibliothek.kit.edu/1000180650 https://doi.org/10.5445/IR/1000180650 |
| Rights: | CC BY |
| Dokumentencode: | edsair.doi.dedup.....1b05471285f1625b03b64eb2f3669069 |
| Datenbank: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstract: | Lightning is the most important source of nitric oxide (NO) in the tropical upper troposphere and controls the formation of tropospheric ozone (). It is associated with deep convection and occurs mostly over continents. The Chemistry of the Atmosphere Field Experiment in the Pacific (CAFE Pacific) was conducted in early 2024 from Cairns, Australia, taking airborne measurements across the Australian continent and the surrounding maritime regions. Based on cloud top properties, lightning data and in situ observations of NO, and carbon monoxide, we show that deep convection occurs over Northern Australia and the Indo‐Pacific Warm Pool. While we identify strong lightning activity over Australia, we observe deep convection in the Warm Pool that is not electrified. Our observations of low in the Warm Pool can be attributed to ‐poor air from the marine boundary layer, which is not replenished by photochemical production from NO at high altitudes. |
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| ISSN: | 19448007 00948276 |
| DOI: | 10.1029/2024gl112788 |