ALBERT

Description: The Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) provides a framework for the collation of a consistent set of climate impact data across sectors and scales. It also provides a unique opportunity for considering interactions between climate change impacts across sectors through consistent scenarios. The ISIMIP3b part of the third simulation round is dedicated to a quantification of climate-related risks at different levels of global warming and socio-economic change. ISIMIP3b group I simulations are based on historical climate change as simulated in CMIP6 combined with observed historical socio-economic forcing. ISIMIP3b group II simulations are based on climate change according to the CMIP6 future projections combined with socio-economic forcings fixed at 2015 levels. ISIMIP3b group III simulations additionally account for future changes in socio-economic forcing. This dataset covers additional CMIP6-based and bias-adjusted atmospheric climate input data published as secondary input data for ISIMIP3b. Included are datasets from the 5 CMIP6 global climate models that are included in the ISIMIP3b protocol (GFDL-ESM4, IPSL-CM6A-LR, MPI-ESM1-2-HR, MRI-ESM2-0, UKESM1-0-LL) for experiments which are not part of the ISIMIP3b protocol (hist-nat, ssp119, ssp245, ssp460, ssp534-over). Also included are datasets from 5 additional CMIP6 global climate models (CNRM-CM6-1, CNRM-ESM2-1, CanESM5, EC-Earth3, MIROC6) for the experiments of the ISIMIP3b protocol (piControl, historical, SSP126, SSP370, SSP585) and hist-nat in some cases.

Description: The W5E5 dataset was compiled to support the bias adjustment of climate input data for the impact assessments carried out in phase 3b of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP3b). Version 2.0 of the W5E5 dataset covers the entire globe at 0.5° horizontal and daily temporal resolution from 1979 to 2019. Data sources of W5E5 are version 2.0 of WATCH Forcing Data methodology applied to ERA5 data (WFDE5; Weedon et al., 2014; Cucchi et al., 2020), ERA5 reanalysis data (Hersbach et al., 2020), and precipitation data from version 2.3 of the Global Precipitation Climatology Project (GPCP; Adler et al., 2003). Variables (with short names and units in brackets) included in the W5E5 dataset are Near Surface Relative Humidity (hurs, %), Near Surface Specific Humidity (huss, kg kg-1), Precipitation (pr, kg m-2 s-1), Snowfall Flux (prsn, kg m-2 s-1), Surface Air Pressure (ps, Pa), Sea Level Pressure (psl, Pa), Surface Downwelling Longwave Radiation (rlds, W m-2), Surface Downwelling Shortwave Radiation (rsds, W m-2), Near Surface Wind Speed (sfcWind, m s-1), Near-Surface Air Temperature (tas, K), Daily Maximum Near Surface Air Temperature (tasmax, K), Daily Minimum Near Surface Air Temperature (tasmin, K), Surface Altitude (orog, m), and WFDE5-ERA5 Mask (mask, 1).

Description: Sauerstoff ist lebenswichtig. Wälder produzieren ihn, sind aber stark bedroht. Die Auswirkungen auf das Lebenselixier von Mensch und Tier ist erstaunlich gering – ein anderes Problem umso gravierender.

Description: Ein australisches Expertengremium erklärt das 1,5-Grad-Ziel des Klimaabkommens für Paris für gescheitert. Das Limit sei nicht mehr zu halten. Doch die Faktenlage ist differenzierter.

Description: Das Wetter verändert sich durch den Klimawandel auf überraschende Weise: Es wird nicht einfach nur wärmer, sondern zwischendurch auch mal deutlich kälter. So wie aktuell in Teilen Europas und Amerikas.

Description: Sind die extremen Regenfälle Wetterphänomene – oder doch Klima? Forscher haben die Zunahme solcher Ereignisse schon vor 30 Jahren als Folge von Erderwärmung prognostiziert. Inzwischen belegen Messdaten den Zusammenhang.

Description: Die Wissenschaften spielen eine immer wichtigere Rolle in unserer komplexen Welt. Wie man erkennen kann, welche Experten vertrauenswürdig sind – und welche nicht.

Description: The electricity sector will play a central role in achieving the European Green Deal target of a net-zero EU by 2050. The range of available low carbon electricity generation technologies and abundant resources, including wind and solar, mean that electricity will be a leading sector in decarbonisation, provided it can attract sufficient finance (see Finance Policy Brief). Electricity is also important for the decarbonisation of other sectors. Buildings, transport and industry will increasingl, switch to technologies that use electricity in order to achieve decarbonisation. The success of these sectors switching to electricity in order to decarbonise, depends of course on electricity itself being decarbonised first.

Description: The Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) provides a framework for the collation of a consistent set of climate impact data across sectors and scales. It also provides a unique opportunity for considering interactions between climate change impacts across sectors through consistent scenarios. The ISIMIP3b part of the third simulation round is dedicated to a quantification of climate-related risks at different levels of global warming and socio-economic change. ISIMIP3b group I simulations are based on historical climate change as simulated in CMIP6 combined with observed historical socio-economic forcing. ISIMIP3b group II simulations are based on climate change according to the CMIP6 future projections combined with socio-economic forcings fixed at 2015 levels. ISIMIP3b group III simulations additionally account for future changes in socio-economic forcing. This dataset covers the CMIP6-based and bias-adjusted atmospheric climate input data for all three groups of ISIMIP3b simulations. Such data are available for 5 CMIP6 global climate models (GFDL-ESM4, IPSL-CM6A-LR, MPI-ESM1-2-HR, MRI-ESM2-0, UKESM1-0-LL), 5 CMIP6 experiments (piControl, historical, SSP126, SSP37, SSP585) and 11 CMIP6 variables (huss, hurs, pr, prsn, ps, rlds, rsds, sfcWind, tas, tasmax, tasmin).

Description: Steigende Meeresspiegel, häufigere Wetterextreme – mehr als 200 Fachleute haben die Lage des Klimas auf der Erde analysiert. Was uns in den kommenden Jahren bevorsteht – und worauf es jetzt ankommt.

Description: Dramatisch übertriebene Berichte über Forschungsergebnisse können Resignation auslösen. Ein aktuelles Beispiel machte wieder Schlagzeilen – dabei war die Methode wenig aussagekräftig.

Description: Eine Nachricht, deren Symbolwert kaum größer sein könnte, ist diese Woche beinahe untergegangen: Der CO2-Ausstoß tut nicht mehr das, was er seit Jahrzehnten tut – er steigt nicht mehr.

Description: Um die Klimakrise in den Griff zu bekommen, werden wir Kohlenstoff aus der Atmosphäre entfernen und speichern müssen. Wird vermehrt mit Holz gebaut, könnten Städte zu regelrechten Kohlenstoffspeichern werden.

Description: Eine ernsthafte Debatte über die Klimapolitik findet im Wahlkampf kaum statt. Dabei starten wir jetzt in die klimapolitisch wichtigste Legislaturperiode. Auf diese drei Instrumente kommt es jetzt an.

Description: In the last three decades, the EU has been a clear front-runner in the fight against climate change. Structural changes in the European economy combined with policies for supporting renewables and energy efficiency have resulted in a decoupling of economic growth from emissions, with EU-28 GHG emissions declining by 24% over 1990-2019, while GDP increased by about 60%. The greatest progress has so far been achieved in the sectors covered by the EU Emission Trading System (EU ETS), in particular electricity production and heavy industry, while emissions are still increasing in the transport sector. The EU has a good track record of achieving its domestic and international climate and energy pledges. However, current efforts need to be greatly accelerated to achieve climate neutrality by mid-century and the new 55% reduction by 2030, as required by the EU’s own ‘Green Deal’ policy, and the Paris Agreement.

Description: The CHELSA-W5E5 dataset was created to serve as observational climate input data for the impact assessments carried out in phase 3a of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP3a). Version 1.0 of the CHELSA-W5E5 dataset covers the entire globe at 30 arcsec horizontal and daily temporal resolution from 1979 to 2016. Data sources of CHELSA-W5E5 are version 1.0 of WFDE5 over land merged with ERA5 over the ocean (W5E5; Lange, 2019; Cucchi et al., 2020), the ERA5 global reanalysis (Hersbach et al. 2020) and the Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010; Danielson and Gersch, 2011). Variables (with short names and units in brackets) included in the CHELSA-W5E5 dataset are Daily Mean Precipitation (pr, kg m-2 s-1), Daily Mean Surface Downwelling Shortwave Radiation (rsds, W m-2), Daily Mean Near-Surface Air Temperature (tas, K), Daily Maximum Near Surface Air Temperature (tasmax, K), Daily Minimum Near Surface Air Temperature (tasmin, K), Surface Altitude (orog, m), and the CHELSA-W5E5 land-sea mask (mask, 1).

Description: Covid-19 ist nicht schlimmer als die normale Grippe? Bill Gates hat die Coronakrise erfunden? Die Leugner wissenschaftlicher Erkenntnisse verwenden immer wieder dieselben Methoden, um ihr Laienpublikum zu verführen.

Description: Um gute von schlechter Klimapolitik zu unterscheiden, muss man auf das Emissionsbudget schauen. Vorstellen kann man sich das wie ein Bankguthaben. Was dahintersteckt.

Description: Seit mehr als zehn Jahren wird international debattiert, ob die Erderwärmung bei 1,5 oder 2 Grad gestoppt werden soll. Aber kommt es überhaupt auf ein halbes Grad an?

Description: Mehr Brände, Hitzewellen und Niederschläge - viele Vorhersagen der Klimaforschung sind Realität geworden. Nun könnte auch die lang befürchtete Golfstromsystem-Abschwächung eintreffen, mit Folgen für Europa.

Description: Die Corona-Pandemie verschaffte der Erde eine scheinbare CO₂-Verschnaufpause. Aber ist sie nachhaltig? Was muss die internationale Klimapolitik erreichen, was Deutschland tun? Unser Ausblick auf das Klimajahr 2021.