Matches in SemOpenAlex for { <https://semopenalex.org/work/W214191536> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W214191536 abstract "The mechanisms of air-sea gas transfer are studied in a large annular air-sea interaction facility, the Heidelberg Aeolotron. A novel visualization technique is used, in which an alkaline gas (ammonia) in ppm concentration levels is absorbed into slightly acid water (pH = 4). The concentration gradient in the aqueous mass boundary layer is transformed into a sharp pH gradient, which is made visible by a fluorescent pH indicator (Pyranine). Regulating the gas flux into the water allows controlling the thickness of the fluorescent layer. By observing the fluorescence induced by high power LEDs on a 2D surface patch ((21 x 25) cm²) with a camera from above at 100 fps and a spatial resolution of 150 μm, the processes creating near-surface turbulence can be studied even at a wavy water surface. Results from an extensive set of experiments are presented, covering wind speeds from 0.4 - 8.6 m/s, different concentrations of a soluble surfactant, and waves with limited and unlimited fetch. The fluorescence footprints of different processes known to contributeto gas exchange, e.g. Langmuir circulations and microscale breaking, are identified. It is found that the transition of the Schmidt number exponent, which is essential forthe scaling of transfer velocities of different gases, from 2/3 to 1/2 is correlated with the frequency of microscale breaking. Surfactants shift the onset of surface renewalevents to higher wind speeds. Direct comparison to simultaneously captured thermal imagery shows that despite the large difference in diffusion coefficients between ammonia and heat by a factor of 100, the transport of both tracers is governed by the same mechanisms." @default.
- W214191536 created "2016-06-24" @default.
- W214191536 creator A5065833838 @default.
- W214191536 date "2015-01-01" @default.
- W214191536 modified "2023-09-27" @default.
- W214191536 title "Visualization of air-water gas exchange" @default.
- W214191536 doi "https://doi.org/10.11588/heidok.00018209" @default.
- W214191536 hasPublicationYear "2015" @default.
- W214191536 type Work @default.
- W214191536 sameAs 214191536 @default.
- W214191536 citedByCount "2" @default.
- W214191536 countsByYear W2141915362016 @default.
- W214191536 crossrefType "dissertation" @default.
- W214191536 hasAuthorship W214191536A5065833838 @default.
- W214191536 hasConcept C111603439 @default.
- W214191536 hasConcept C113196181 @default.
- W214191536 hasConcept C120665830 @default.
- W214191536 hasConcept C121332964 @default.
- W214191536 hasConcept C145420912 @default.
- W214191536 hasConcept C153294291 @default.
- W214191536 hasConcept C179428855 @default.
- W214191536 hasConcept C185592680 @default.
- W214191536 hasConcept C196558001 @default.
- W214191536 hasConcept C2778001640 @default.
- W214191536 hasConcept C33923547 @default.
- W214191536 hasConcept C43617362 @default.
- W214191536 hasConcept C57879066 @default.
- W214191536 hasConcept C91881484 @default.
- W214191536 hasConceptScore W214191536C111603439 @default.
- W214191536 hasConceptScore W214191536C113196181 @default.
- W214191536 hasConceptScore W214191536C120665830 @default.
- W214191536 hasConceptScore W214191536C121332964 @default.
- W214191536 hasConceptScore W214191536C145420912 @default.
- W214191536 hasConceptScore W214191536C153294291 @default.
- W214191536 hasConceptScore W214191536C179428855 @default.
- W214191536 hasConceptScore W214191536C185592680 @default.
- W214191536 hasConceptScore W214191536C196558001 @default.
- W214191536 hasConceptScore W214191536C2778001640 @default.
- W214191536 hasConceptScore W214191536C33923547 @default.
- W214191536 hasConceptScore W214191536C43617362 @default.
- W214191536 hasConceptScore W214191536C57879066 @default.
- W214191536 hasConceptScore W214191536C91881484 @default.
- W214191536 hasLocation W2141915361 @default.
- W214191536 hasOpenAccess W214191536 @default.
- W214191536 hasPrimaryLocation W2141915361 @default.
- W214191536 hasRelatedWork W1630004298 @default.
- W214191536 hasRelatedWork W1968096985 @default.
- W214191536 hasRelatedWork W1971538538 @default.
- W214191536 hasRelatedWork W19825520 @default.
- W214191536 hasRelatedWork W1993779315 @default.
- W214191536 hasRelatedWork W2008983379 @default.
- W214191536 hasRelatedWork W2013824853 @default.
- W214191536 hasRelatedWork W2026933351 @default.
- W214191536 hasRelatedWork W2054902001 @default.
- W214191536 hasRelatedWork W2070468412 @default.
- W214191536 hasRelatedWork W2100959373 @default.
- W214191536 hasRelatedWork W2114540974 @default.
- W214191536 hasRelatedWork W242320518 @default.
- W214191536 hasRelatedWork W2939403125 @default.
- W214191536 hasRelatedWork W3148517244 @default.
- W214191536 hasRelatedWork W3205767885 @default.
- W214191536 hasRelatedWork W3213098445 @default.
- W214191536 hasRelatedWork W68963233 @default.
- W214191536 hasRelatedWork W2157100438 @default.
- W214191536 hasRelatedWork W2189611417 @default.
- W214191536 isParatext "false" @default.
- W214191536 isRetracted "false" @default.
- W214191536 magId "214191536" @default.
- W214191536 workType "dissertation" @default.