Ocean Responses to Typhoon Namtheun Explored with Argo Floats and Multiplatform Satellites
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Bibliographic record
Abstract
Argo salinity and temperature profiles, along with other sea surface measurements, were used to explore the impacts of Typhoon Namtheun (2004) on the ocean. Namtheun took local enthalpy heat from the sea (0.39–0.7 × 108 J m−2), cooled the sea surface water as a result of vertical mixing (maximum 3–4°C) and produced heavy precipitation over the sea (100–180 mm). During this time, the vast latent heat released (2.6–4.4 × 108 J m−2) by the precipitation made a larger contribution to the typhoon's energy budget than the local air-sea enthalpy flux. In the upper ocean, the oceanic responses can be separated into two sub-processes, the fast spin-up accompanied by one-dimensional vertical mixing and the slow spin-down accompanied by the convergence of surface water. From Argo profiles on 28 July, it can be seen that the typhoon-induced surface mixing broke down the seasonal thermocline (approximately 20 db) within one day. In addition, the shallower (<200 db) convergence of the sea surface fresh water as a result of precipitation also made the post-typhoon water fresher (0.04 (practical salinity scale used)). In the deep ocean, the rapid upwelling at the top of the permanent thermocline suggests that the fast spin-up is a barotropic mechanism, probably gravity pressure. During the slow spin-down stage, the upwelling signal propagated downward (approximately 2 m h−1) from the shallow water to the deep ocean for about 10 days; this was a baroclinic process. The baroclinic mechanism was more effective in maintaining a cyclonic eddy than in maintaining an inertial wave, and the low sea surface height anomaly and upwelling lasted much longer than the inertial oscillation (>20 days as opposed to approximately 10 days). This change in vertical structure and long-term upwelling could have impacts on the ocean environment and even on the short-term climate.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.001 | 0.001 |
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 it