Product of the Year

Over the last few years GERICS developed different products and product ideas. The most important are listed below as product of the year.

Product of the Year 2020

Climate outlook for the Federal States (Klimaausblick Bundesländer)

Climate change is in full swing. In recent years, global warming has exceeded the 1 ° C mark. Even in Germany, where the warming is already around 1.5 ° C, the effects are becoming more and more noticeable. But what does climate change mean at the regional level? What changes in extreme weather events are currently being observed and what can be expected for the future?

Klimaausblick Deutschland Ausschnitt Headerbild

The Climate Service Center Germany has now published a climate outlook for each of the 16 German federal states. Each report summarizes the results for climate parameters such as Temperature, hot days, dry days or heavy rain days in just a few pages. The reports have a uniform structure and allow regional comparisons to be made.

The climate outlook for federal states is intended to provide local decision-makers with the most comprehensive possible picture of the current state of knowledge, including the possible uncertainties. The adaptation to climate change on site can thus be put on a better basis.

further information (in German only)

Product of the Year 2019

CORDEX-CORE: World Climate Research Program (WCRP) Coordinated Downscaling Experiment (CORDEX) Common Regional Experiment (CORE)

Cordx Core

CORDEX-CORE is an initiative of the “Coordinated Downscaling Experiment” (CORDEX) and part of the “World Climate Research Program” (WCRP) with the aim of creating a high-resolution and uniform basis of climate information for all human-inhabited continents.

In order to cover the range of possible climate changes, climate simulations were carried out in CORDEX-CORE under a scenario with strong greenhouse gas emissions (RCP8.5) and a scenario with comprehensive climate protection measures (RCP2.6). For each scenario, three global climate simulations with different climate sensitivities were selected and regionalized with two regional climate models. This results in at least twelve simulations for each of the defined simulation areas, each for the period 1970 to 2100, with a horizontal resolution of 0.22 ° (~ 25 km) previously unattainable for most regions.

At GERICS, the entire set of simulations was carried out with the regional climate model REMO operated at GERICS, and simulations for the Central Asia region (CAS) were also created. For all areas, simulations were initially generated using the ERA-Interim reanalysis data, and based on this, the performance of the model was evaluated and successfully published in November 2019 (Remedio et al., 2019). Further publications are in preparation. The data from CORDEX-CORE were presented in October 2019 at the international CORDEX conference ICRC CORDEX 2019 in Beijing and made available to the scientific community via the Earth System Grid Federation (ESGF). Scientific publications based on these data will also be included in the IPCC's 6th Assessment Report (AR6). They will provide an important basis for investigations into regional climate changes worldwide and the basis for analyzes of vulnerability, climate impacts and adaptation.

  • Evaluation of New CORDEX Simulations Using an Updated Köppen–Trewartha Climate Classification. Atmosphere Remedio, A.R.; Teichmann, C.; Buntemeyer, L.; Sieck, K.; Weber, T.; Rechid, D.; Hoffmann, P.; Nam, C.; Kotova, L.; Jacob, D. Evaluation of New CORDEX Simulations Using an Updated Köppen–Trewartha Climate Classification. Atmosphere 2019, 10, 726.
  • Assessing mean climate change signals in the global CORDEX-CORE ensemble Teichmann, C.; Jacob, D.; Remedio, A. R.; Remke, T.; Buntemeyer, L.; Hoffmann, P.; Kriegsmann, A.; Lierhammer, L.; Bülow, K.; Weber, T.; Sieck, K.; Rechid, D.; Langendijk, G. S.; Coppola, E.; Giorgi, F.; Ciarlo`, J. M.; Raffaele, F.; Giuliani, G.; Xuejie, G.; Sines, T. R.; Torres-Alavez, J. A.; Das, S.; Di Sante, F.; Pichelli, E.; Glazer, R.; Ashfaq, M.; Bukovsky, M. & Im, E.-S.; Assessing mean climate change signals in the global CORDEX-CORE ensemble. Climate Dynamics, 2020


Dr. Claas Teichmann

Phone: +49 (0) 40 226 338 441

E-mail contact

Product of the Year 2018

GERICS Products in connection with the IPCC Special Report on 1.5°C Global Warming and the GERICS Federal States Check

Cover SR1.5

The IPCC Special Report on 1.5 ° C global warming is of particular importance to GERICS, as Daniela Jacob, as one of the three coordinating lead authors, coordinated Chapter 3, along with two colleagues from Jamaica and Australia. In this function she was the only scientist from Germany.

Many GERICS staff members also actively contributed to the preparation of this special report. In addition, many scientific information regarding global warming of 1.5 ° C have been prepared around the subject of the report, and with this new GERICS products were created.

GERICS and the IPCC Special Report on 1.5°C Global Warming

Climate change in Germany's federal states

Bundeslaender Check Regenkarte Detail SH Tacho

The summer of 2018 was extraordinary. Deviations from the expected climatic mean were already determined in the spring. The months April and May were the warmest in Germany since the beginning of the weather records more than 130 years ago. June and July stayed warm and were characterized by unusual dryness. In certain regions of the country, it has been raining very little this summer. July saw less rainfall in Germany than in the last 60 years.

Where in Germany are situations such as those we have experienced this year and last year becoming more frequent? GERICS creates clarity. GERICS Federal States Check

Product of the Year 2017


Screenshot EasyREMO

GERICS develops, maintains and uses the regional climate model (RCM) REMO. With this in-house RCM GERICS’ scientists are able to judge the quality, abilities and limitations of the models and their results. Moreover we can actively contribute to and shape major scientific activities such as CORDEX, which usually provides early and/or better access to regional climate model data which is key to the development of climate services products.

One of the major developments in recent years is a user-friendly desktop version of REMO (called EasyREMO), which aims specifically at users in those parts of the world without access to a high-performance computing service. In addition, EasyREMO can be used as capacity building tool, because it comes with graphical user interface (GUI) that does not require in-depth technical knowledge of how to run a regional climate model. The GUI enables the users to select their own model domain, to choose between two different grid resolutions, and to pick from two different climate change scenarios with a mouse click.
further information

Product of the Year 2016

Klimawandel in Deutschland

Titelseite Klimabericht

The National Assessment on Climate Change in Germany comprises the first ever collection and synthesis of all existing information about climate change in Germany. Thus the 5th IPCC Assessment Report is broken down to the national scale, enriched by additional information from "grey" literature, case studies and the authors’ own scientific findings. The German language book "Klimawandel in Deutschland" is meant to present state-of-the-art scientific knowledge in terms of the expressions of climate change, its impacts, deriving risks and adaptation options.

In an interdisciplinary approach the book merges all disciplines and topics. In addition to presenting climate change and climate change impacts the authors draw conclusions on the necessary responses. The key messages are summarized at the end of each chapter.
further information

Product of the Year 2015

IMPACT2C Web-atlas

IMPACT2C Webatlas Titel lang Rahmen

The policy discussion of whether we can limit global warming to not more than +2°C is of central importance for policy decisions. In this context, the following scientific questions are of major importance:
– what might be the potential impacts of a +2°C global warming compared to the preindustrial period for various regions of the globe, and economic sectors?
– what are the differences between a +2°C and a +3°C global warming?
– what might be prevented if global warming is limited to +2°C rather than +3°C?

Parts of these questions have been answered in the IMPACT2C project. In order to present the findings of the project easily accessible for a wide range of users, the IMPACT2C web-atlas was developed. The IMPACT2C web-atlas depicts the climate change impacts of a +2°C global warming for the key sectors – energy, water, tourism, health, agriculture, ecosystems and forestry, as well as coastal and low-lying areas, – at both the pan-European level, and for some of the most vulnerable regions of the world. By using a multi-model ensemble of both climate and impact projections it is possible to define ranges of impacts and therefore quantify some of the uncertainty around future climate and climate impact projections.
further information

Product of the Year 2014

GERICS Climate Signal Maps


In order to adapt the climate change, reliable information on future expected climatic changes is required. Possible future climate developments can be calculated based on scenarios and with the help of numeric climate models. These developments differ depending on the underlying assumptions on socio-economic scenarios and on future concentration of greenhouse gases and aerosols in the atmosphere.

In order to capture various future climate development possibilities in projections, ensemble simulations are therefore used with different models for different scenarios. These span a wide range of possible climate changes. It is, however, not always directly evident from the range of possible climate changes whether robust information can be derived from the data.

The Climate Signal Maps are mapping the robustness of global climate change information either based on ensembles of regional climate projections or on ensembles of global climate projections.
further information

Product of the Year 2013

Klimawandel und Biodiversität in Deutschland

Cover Buch Biodiversitaet

The status report summarizes the state of knowledge on the effects of climate change on biodiversity in Germany.

The looming loss of biodiversity as a result of climate change is considered one of the greatest challenges of the coming decades. The state of knowledge about the expected effects for Germany is summarized in the volume "Climate Change and Biodiversity: Consequences for Germany". More than 100 experts from different disciplines participated in it.

The impact of climate change on biodiversity has been published in recent years in numerous articles, and in various journals. So far, however, lacked a compact, generally understandable compilation of the current state of knowledge. This gap is closed by the status report "Climate Change and Biodiversity: Consequences for Germany". The editors of the most comprehensive compilation on this subject pursue an interdisciplinary approach: from climatology to biology, soil science and forestry to medicine and sociology, scientists from all relevant fields are involved in the volume.
further information

Product of the Year 2012

GERICS Adaptation toolkit for cities (Stadtbaukasten)

Logo Stadtbaukasten Kloetzchen

The modular designed advisory tool supports cities and municipalities in developing and implementing adaptation policies, considering both climate change mitigation and adaptation. Due to its modular structure, it is flexible and transparent and provides tailored advice. There is a direct interface between the adaptation toolkit for cities and the company toolbox.

The cities toolkit’s main goal is the planning of adaptation measures and their integration into existing planning processes in order to avoid additional pressure for the increasingly scarce human and financial resources at city administrations. This flexible structure allows to address each cities specific environmental and administrative framework. The development of practicable strategies or measures and their implementation is carried out in close cooperation with the contracting cities or municipalities.

The adaptation toolkit for cities provides in its standard configuration eleven module groups that cover the most important areas of activities of a city. Within each module group, there are one or more modules with specific priorities.
further information

Product of the Year 2011

GERICS Climate-Fact-Sheets

CFS Faecher March16 cut

Many investment projects in industry and finance need to consider how they may be affected by climate change, before they are approved. These projects may take place in various countries, regions, or climate zones around the world. There are a range of different climatic data sets available, and careful analysis and compilation of these data is necessary to generate consistent results.

In a compact and concise form the Climate-Fact-Sheets contain the essential climate-characteristics of individual countries or regions worldwide on a few pages. The Climate-Fact-Sheets synthesise information on the potential magnitude of change of different climate-variables like temperature, precipitation or climatological water balance. In addition statements about the climate history and the recent climate characteristics are included.

The information about the possible future climate development is based on global or regional climate projections (depending on the region). A detailed manual on „How to read a Climate-Fact-Sheet“ is provided.
further information