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Akademický článek

Comparison of ocean vertical mixing schemes in the Max Planck Institute Earth System Model (MPI-ESM1.2)

Autor: O. Gutjahr, N. Brüggemann, H. Haak, J. H. Jungclaus, D. A. Putrasahan, K. Lohmann, J.-S. von Storch

Publikováno v: Geoscientific Model Development, Vol 14, Pp 2317-2349 (2021)

For the first time, we compare the effects of four different ocean vertical mixing schemes on the mean state of the ocean and atmosphere in the Max Planck Institute Earth System Model (MPI-ESM1.2). These four schemes are namely the default Pacanowski

Externí odkaz: https://doaj.org/article/e6347ecdb0ad47868abcd731c713cdf2

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Akademický článek

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Akademický článek

Northern Hemisphere blocking simulation in current climate models: evaluating progress from the Climate Model Intercomparison Project Phase 5 to 6 and sensitivity to resolution

Autor: R. Schiemann, P. Athanasiadis, D. Barriopedro, F. Doblas-Reyes, K. Lohmann, M. J. Roberts, D. V. Sein, C. D. Roberts, L. Terray, P. L. Vidale

Publikováno v: Weather and Climate Dynamics, Vol 1, Pp 277-292 (2020)

Global climate models (GCMs) are known to suffer from biases in the simulation of atmospheric blocking, and this study provides an assessment of how blocking is represented by the latest generation of GCMs. It is evaluated (i) how historical CMIP6 (C

Externí odkaz: https://doaj.org/article/ecc0fedf324a43e3b0d798b16ad46320

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Akademický článek

Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP)

Autor: O. Gutjahr, D. Putrasahan, K. Lohmann, J. H. Jungclaus, J.-S. von Storch, N. Brüggemann, H. Haak, A. Stössel

Publikováno v: Geoscientific Model Development, Vol 12, Pp 3241-3281 (2019)

As a contribution towards improving the climate mean state of the atmosphere and the ocean in Earth system models (ESMs), we compare several coupled simulations conducted with the Max Planck Institute for Meteorology Earth System Model (MPI-ESM1.2) f

Externí odkaz: https://doaj.org/article/f3a72f22ceae459282f5724c3f2deb91

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Akademický článek

Surface Flux Drivers for the Slowdown of the Atlantic Meridional Overturning Circulation in a High‐Resolution Global Coupled Climate Model

Autor: D. A. Putrasahan, K. Lohmann, J.‐S. vonStorch, J. H. Jungclaus, O. Gutjahr, H. Haak

Publikováno v: Journal of Advances in Modeling Earth Systems, Vol 11, Iss 5, Pp 1349-1363 (2019)

Abstract This paper investigates the causation for the decline of the Atlantic Meridional Overturning Circulation (AMOC) from approximately 17 Sv to about 9 Sv, when the atmospheric resolution of the Max Planck Institute‐Earth System Model is enhan

Externí odkaz: https://doaj.org/article/84cb4697dc2d4e0aa9e1b100733b867f

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Akademický článek

A statistical and process-oriented evaluation of cloud radiative effects in high-resolution global models

Autor: M. A. Thomas, A. Devasthale, T. Koenigk, K. Wyser, M. Roberts, C. Roberts, K. Lohmann

Publikováno v: Geoscientific Model Development, Vol 12, Pp 1679-1702 (2019)

This study evaluates the impact of atmospheric horizontal resolution on the representation of cloud radiative effects (CREs) in an ensemble of global climate model simulations following the protocols of the High Resolution Model Intercomparison Proje

Externí odkaz: https://doaj.org/article/1b6998564aa741f484881c41e1a1230e

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Akademický článek

Using simulations of the last millennium to understand climate variability seen in palaeo-observations: similar variation of Iceland–Scotland overflow strength and Atlantic Multidecadal Oscillation

Autor: K. Lohmann, J. Mignot, H. R. Langehaug, J. H. Jungclaus, D. Matei, O. H. Otterå, Y. Q. Gao, T. L. Mjell, U. S. Ninnemann, H. F. Kleiven

Publikováno v: Climate of the Past, Vol 11, Iss 2, Pp 203-216 (2015)

A recent palaeo-reconstruction of the strength of the Iceland–Scotland overflow during the last 600 years suggests that its low-frequency variability exhibits strong similarity with palaeo-reconstructions of the Atlantic Multidecadal Oscillation (A

Externí odkaz: https://doaj.org/article/5aa1e77d44d443cbb2d63d3f58b2c47d

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Akademický článek

Enhanced 20th-century heat transfer to the Arctic simulated in the context of climate variations over the last millennium

Autor: J. H. Jungclaus, K. Lohmann, D. Zanchettin

Publikováno v: Climate of the Past, Vol 10, Iss 6, Pp 2201-2213 (2014)

Oceanic heat transport variations, carried by the northward-flowing Atlantic Water, strongly influence Arctic sea-ice distribution, ocean–atmosphere exchanges, and pan-Arctic temperatures. Palaeoceanographic reconstructions from marine sediments ne

Externí odkaz: https://doaj.org/article/0b27e5275f944bd081a48162d4b7a6bb

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Akademický článek

The role of subpolar deep water formation and Nordic Seas overflows in simulated multidecadal variability of the Atlantic meridional overturning circulation

Autor: K. Lohmann, J. H. Jungclaus, D. Matei, J. Mignot, M. Menary, H. R. Langehaug, J. Ba, Y. Gao, O. H. Otterå, W. Park, S. Lorenz

Publikováno v: Ocean Science, Vol 10, Iss 2, Pp 227-241 (2014)

We investigate the respective role of variations in subpolar deep water formation and Nordic Seas overflows for the decadal to multidecadal variability of the Atlantic meridional overturning circulation (AMOC). This is partly done by analysing long (

Externí odkaz: https://doaj.org/article/8b0248658ad4418ab72ed035faee4fd6

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