Anomalous Vertical Structure of Tropospheric Ozone Due To Stratospheric Intrusions and Convective Transport
Bibliographic record
Abstract
Abstract Vertical transport carries airmasses from different sources of tropospheric O 3 including photochemical production and stratospheric intrusions, and is crucial for vertical O 3 variability. Based on temporally dense ozonesondes over northern China, this study reports an anomalous vertical O 3 distribution characterized by a “bottom‐heavy” structure. Specifically, O 3 well exceeded the normal values in the middle‐to‐lower troposphere due to the stratospherically intruded airmasses (SIA), but was sharply reduced in the upper troposphere and lower stratosphere region because of convectively lofted air transported from the Tibetan Plateau. Guided by the discovery of such a vertical O 3 structure, we further assess the SIA contribution to tropospheric O 3 using multi‐year AIRS satellite observations, and find that SIA appear frequently during summer and lead to short‐term O 3 enhancements 35% above the normal values at 500 hPa. These results reveal the linkages between vertical O 3 variations and synoptic processes, highlighting the non‐negligible contribution of SIA to tropospheric O 3 .
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".