Fill dynamics and sample mixing in the AirCore
<p>The AirCore is a long coiled tube that acts as a “tape recorder” of the composition of air as it is slowly filled or flushed. When launched by balloon with one end of the tube open and the other closed, the initial fill air flows out during ascent as the outside air pressure drops. During d...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-03-01
|
| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/15/1903/2022/amt-15-1903-2022.pdf |
| Summary: | <p>The AirCore is a long coiled tube that acts as a “tape recorder” of the
composition of air as it is slowly filled or flushed. When launched by
balloon with one end of the tube open and the other closed, the initial fill air flows out during ascent as the outside air pressure drops. During
descent atmospheric air flows back in. I describe how we can associate the
position of an air parcel in the tube with the altitude it came from by
modeling the dynamics of the fill process. The conditions that need to be
satisfied for the model to be accurate are derived. The extent of the mixing of
air parcels that enter at different times is calculated so that we know how many independent samples are in the tube upon landing and later when the AirCore is analyzed.</p> |
|---|---|
| ISSN: | 1867-1381 1867-8548 |