Zobrazeno 1 - 10
of 70
pro vyhledávání: '"G. Krahmann"'
Autor:
P. L'Hégaret, F. Schütte, S. Speich, G. Reverdin, D. B. Baranowski, R. Czeschel, T. Fischer, G. R. Foltz, K. J. Heywood, G. Krahmann, R. Laxenaire, C. Le Bihan, P. Le Bot, S. Leizour, C. Rollo, M. Schlundt, E. Siddle, C. Subirade, D. Zhang, J. Karstensen
Publikováno v:
Earth System Science Data, Vol 15, Pp 1801-1830 (2023)
The northwestern Tropical Atlantic Ocean is a turbulent region, filled with mesoscale eddies and regional currents. In this intense dynamical context, several water masses with thermohaline characteristics of different origins are advected, mixed, an
Externí odkaz:
https://doaj.org/article/4299a9bcc887493286fdc20b83bebf7a
Autor:
J. Hauschildt, S. Thomsen, V. Echevin, A. Oschlies, Y. S. José, G. Krahmann, L. A. Bristow, G. Lavik
Publikováno v:
Biogeosciences, Vol 18, Pp 3605-3629 (2021)
Filaments and fronts play a crucial role for a net offshore and downward nutrient transport in Eastern Boundary Upwelling Systems (EBUSs) and thereby reduce regional primary production. Most studies on this topic are based on either observations or m
Externí odkaz:
https://doaj.org/article/c2ea9a3681af44cb9063746294b4e7b5
Autor:
J. Lüdke, M. Dengler, S. Sommer, D. Clemens, S. Thomsen, G. Krahmann, A. W. Dale, E. P. Achterberg, M. Visbeck
Publikováno v:
Ocean Science, Vol 16, Pp 1347-1366 (2020)
The intraseasonal evolution of physical and biogeochemical properties during a coastal trapped wave event off central Peru is analysed using data from an extensive shipboard observational programme conducted between April and June 2017, and remote se
Externí odkaz:
https://doaj.org/article/2a09d2633c814aa8838501daa048799d
Publikováno v:
Biogeosciences, Vol 17, Pp 215-230 (2020)
Oxygen minimum zones (OMZs) show distinct biogeochemical processes that relate to microorganisms being able to thrive under low or even absent oxygen. Microbial degradation of organic matter is expected to be reduced in OMZs, although quantitative ev
Externí odkaz:
https://doaj.org/article/3be01bbff6ab4f409a19f4744375ecf4
Publikováno v:
Biogeosciences, Vol 16, Pp 979-998 (2019)
Upwelling systems play a key role in the global carbon and nitrogen cycles and are also of local relevance due to their high productivity and fish resources. To capture and understand the high spatial and temporal variability in physical and biogeoch
Externí odkaz:
https://doaj.org/article/a2b20a7432b845cc82706f7210967a80
Autor:
D. S. Grundle, C. R. Löscher, G. Krahmann, M. A. Altabet, H. W. Bange, J. Karstensen, A. Körtzinger, B. Fiedler
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
Abstract Nitrous oxide (N2O) is a climate relevant trace gas, and its production in the ocean generally increases under suboxic conditions. The Atlantic Ocean is well ventilated, and unlike the major oxygen minimum zones (OMZ) of the Pacific and Indi
Externí odkaz:
https://doaj.org/article/a9d9b0a3961f411097b4f7e5b204d1e5
Publikováno v:
Ocean Science, Vol 13, Pp 551-576 (2017)
Repeat shipboard and multi-year moored observations obtained in the oxygen minimum zone (OMZ) of the eastern tropical North Atlantic (ETNA) were used to study the decadal change in oxygen for the period 2006–2015. Along 23° W between 6 and 14°
Externí odkaz:
https://doaj.org/article/153780c274ec4fd0b8a84924b7a60cb0
Autor:
J. Karstensen, F. Schütte, A. Pietri, G. Krahmann, B. Fiedler, D. Grundle, H. Hauss, A. Körtzinger, C. R. Löscher, P. Testor, N. Vieira, M. Visbeck
Publikováno v:
Biogeosciences, Vol 14, Iss 8, Pp 2167-2181 (2017)
The temporal evolution of the physical and biogeochemical structure of an oxygen-depleted anticyclonic modewater eddy is investigated over a 2-month period using high-resolution glider and ship data. A weakly stratified eddy core (squared buoyancy fr
Externí odkaz:
https://doaj.org/article/63ae1eb7df5f4ebf905997c272b42b71
Autor:
F. Schütte, J. Karstensen, G. Krahmann, H. Hauss, B. Fiedler, P. Brandt, M. Visbeck, A. Körtzinger
Publikováno v:
Biogeosciences, Vol 13, Iss 20, Pp 5865-5881 (2016)
Localized open-ocean low-oxygen “dead zones” in the eastern tropical North Atlantic are recently discovered ocean features that can develop in dynamically isolated water masses within cyclonic eddies (CE) and anticyclonic mode-water eddies (ACME)
Externí odkaz:
https://doaj.org/article/8e7b3956dc694acbac9d13b013d7044c
Publikováno v:
Ocean Science, Vol 12, Iss 4, Pp 861-873 (2016)
A strong El Niño developed in early 2015. Measurements from a research cruise on the R/V Sonne in October 2015 near the Equator east of the Galapagos Islands and off the shelf of Peru are used to investigate changes related to El Niño in the upper
Externí odkaz:
https://doaj.org/article/9379b35b36664666a03d1f4d50715bb2