High latitude vertical profiles of 14CO2 across the tropopause from the Atmospheric Tomography (ATom) Mission
Abstract
We present vertical profiles of radiocarbon (14CO2) up to altitudes of ~12 km in May 2018 from the fourth deployment of the Atmospheric Tomography Mission (ATom-4). Fifty whole air samples selected for 14CO2 analysis were collected by the NASA DC-8 aircraft in the Northern Hemisphere between 62 and 69°N from 183 to 12079 m and in the Southern Hemisphere between 57 and 81°S from 186 to 11485 m. These new data are combined with measurements from previous NASA missions including SEAC4RS (2013), DC-3 (2012), Pre-AVE (2004), SOLVE (2000), POLARIS (1997), and high altitude balloon flights in 2003, 2004, and 2005 to inform stratospheric transport and stratosphere-troposphere exchange.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.A53P2982C
- Keywords:
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- 0320 Cloud physics and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0340 Middle atmosphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0341 Middle atmosphere: constituent transport and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 3362 Stratosphere/troposphere interactions;
- ATMOSPHERIC PROCESSES