Diapyknische Vermischung im Subpolaren Nordatlantik
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Model simulations of climate change and global overturning circulation are quite sensitive to the strength and distribution of mixing. However, the field observations are only sparsely available. The strength of diapycnal mixing was estimated from more than 700 profiles of hydrographic and velocity measurements in the subpolar North Atlantic (SPNA). These measurements were collected during hydrographic surveys from 2003 to 2011, ranging from 40 N to 62 N in latitude. Furthermore, 28 Micro-scale structure profiles were collected at 7 stations over the Mid-Atlantic Ridge and at the western boundary during the cruise in 2008, providing supplement of direct measurements and an agent to evaluate the overall estimation. Under the assumption of a steady state, spatial distribution and vertical structure of diapycnal diffusivity were mapped in this area. The inferred diffusivity is generally elevated compared to the background diffusivity in the open ocean and shows large variability in the SPNA. diffusivity of at least one magnitude larger can be seen nearly in the whole area several hundread of meters within seafloor. Strong mixing at mid-depth of one to two orders larger than the background value are found at western boundary, over Mid-Atlantic ridge and in the pathway of North Atlantic Current and deep currents. The possible connections between enhanced mixing and several environmental parameters including seafloor roughness, geostrophic currents and meso-scale eddies are analysed. Conversions between components of the North Atlantic Deep Water associated with mixing are estimated from vertical motion inferred from density field and turbulent diffusivity based on an advection-diffusion balance model. In vertical direction, averaged diffusivity is found to decrease with the height above seafloor within the deepest 1500 m and to be constant. A transformation of around 1.6 Sv from Gibbs Fracture Zone Water to overlying Labrador Sea water is derived; the transformation between lowest Denmark Strait Overflow Water to upper Gibbs Fracture Zone Water is about 3.5 Sv.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.018 | 0.005 |
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