The northern hemisphere climate during the last glacial period (about 65,000-15,000 years before present) was dominated by two prominent signals of glacial climate variability, known as Dansgaard-Oeschger cycles and Heinrich events. The episodic Heinrich events, defined by an enhanced ice discharge from the Laurentide Ice Sheet, tend to coincide with cold phases of the Dansgaard-Oeschger cycles, which are periodic and abrupt warming and cooling cycles. This suggests a close connection, but the…
Contact
Rainer Weigle
Group leader Tel.: +49 (0)40 41173-373 rainer.weigle@mpimet.mpg.de
Helpdesk
Tel.: +49 (0)40 41173-361 help-it@mpimet.mpg.de
Contact
Central IT Services
Central IT Services
IT services are provided at MPI-M by the Central IT Services (CIS) group.
The most important services of the Central IT Services are:
Procurement, setup and management of IT hardware and software for both users (laptops, PCs) and infrastructure (servers, networks, etc.) Central user…
Have you ever wondered how much a single measurement campaign matters when estimating the ocean's carbon sink? In a study published recently in Scientific Reports, Jaqueline Behncke and Peter Landschützer from the Max Planck Institute for Meteorology together with Toste Tanhua from GEOMAR show that data from a single sailboat have a significant impact on estimates of the ocean carbon sink. In the South Polar Ocean, where few measurement campaigns take place, CO2 measurements from a single…
When a snowball Earth deglaciates, the planet transitions rapidly into a hot "supergreenhouse" climate that persists for a hundred thousand years or more - according to the classic snowball Earth theory. In a new publication, MPI-M scientists Lennart Ramme, Tatiana Ilyina and Jochem Marotzke show that this concept is too simplified, as the ocean transformations after a snowball Earth drive strong carbon cycle dynamics, which alter the evolution of atmospheric CO2. In fact, scenarios ranging…
Do climate models realistically represent the coupling between Earth’s surface warming and the top-of-the atmosphere radiation? Dirk Olonscheck, research scientist at Max Planck Institute for Meteorology, and Maria Rugenstein, Assistant Professor at Colorado State University, show that models systematically underestimate the observed coupling strength. Thereby, the models accumulate too much energy in the atmosphere, an effect that contributes to a possibly too high climate sensitivity of some…
In their new study Olga Erokhina and Uwe Mikolajewicz showed that adding icebergs to climate models can help scientists better understand the influence melting icebergs have on the planet’s climate. Even though icebergs are an important component of the climate system, they are not included in most models — partly as they are computational quite expensive. Erokhina und Mikolajewicz now found a new approach of including them that doesn't add much to the computational cost of running the climate…
In a recent study, Dr. Junhong Lee and Dr. Cathy Hohenegger show that a next-generation climate model exhibits a different relationship between water stored in the soil and precipitation compared to a state-of-the-art climate model. This finding questions the ability of conventional climate models to answer questions related to climate over land.
PalMod - From the Last Interglacial to the Anthropocene - Modeling a Complete Glacial Cycle
Scalar - Quantifying millennial timescale grounding-line retreat in East Antarctica
Projects
Since November 2019
Postdoc at Max Planck Institute for Meteorology, Germany
June 2017 - November 2019
Postdoc at University of Tübingen, Germany
November 2013- June 2017
PhD in Glaciology University of Birmingham and British Antarctic Survey, UK
2012-2013
MSc by Research…
Biography and Research
Klaus Fraedrich
is guest scientist at the Max Planck Insitute for Meteorology, Hamburg, Germany.
His prior affiliations include: Professor at University of Hamburg, Freie Universität Berlin, Rheinische Friedrich-Wilhelms-Universität Bonn (all in Germany); visiting Professor at the Universities of New South Wales (Sydney, Australia), Washington (SeaPle, USA), Wisconsin (Madison, USA), Nanjing University of Information Science and Technology (China), Head of Long-Range…
In a recent publication, Prof. Jin-Song von Storch together with other scientists showed that the ocean component of the ICON model is able to realistically simulate the major properties of open-ocean tides, also known as barotropic tides or surface tides. This ability is a prerequisite for the ocean component of ICON at kilometer scale to realistically simulate internal tides, which “live” in the ocean interior and are challenging to observe. Internal tides represent a major internal wave…
A group of climate protection fellows from South America, Asia and Africa will be visiting the Max Planck Institute for Meteorology (MPI-M) and the German Climate Computing Center on March 20 to gain an overview of selected aspects of climate research.
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