The CMIP is a standard experimental framework for studying the output of coupled atmosphere-ocean general circulation models. CMIP5 (formally: Coupled Model Intercomparison Project Phase 5) is the most current and extensive of the CMIPs.
RCP = trajectory of emissions and land-use. leading to a specifc forcing level. SSP = Shared socio-economic pathway: story. about how population, GDP, income etc.
Here are the currently active CMIP6 CoG sites (all data can be accessed via any one of these): USA, PCMDI/LLNL (California) - France, IPSL - Germany, DKRZ -
CMIP5 is the model ensemble for the IPCC's Fifth Assessment Report (AR5) and was released in 2014. CMIP6 is the model ensemble for the IPCC's Sixth Assessment Report (AR6) and was released in 2021.
Download CMIP5 data:
- Choose project: CMIP5.
- Experiment family: e.g. Historical, RCP etc.
- Time frequency: mon (you probably want monthly outputs)
- Realm: Maybe you want only aerosol data? Or restrict your search to “atmos†(atmosphere)
- Variable: Choose the variable you want.
35. mitigation measures (ssp126), air pollutants are substantially reduced across all regions by up to 15 ppb for O3 and 12 µg m-3. for PM2.5. However, for scenarios that encompass weak action on mitigating climate and reducing air pollutant emissions.
CMIP5 involves 20 climate modeling research groups around the world with 40 GCMs. To evaluate the performances of these GCMs, their simulated climatological temperature and precipitation for years 1901–1999 are employed.
One simple answer to the question of why there are so many climate models is that science is a global activity. Around the world, there are roughly thirty research groups that have developed their own global circulation models.
The Intergovernmental Panel on Climate Change (IPCC) is the United Nations body for assessing the science related to climate change.
A coupled climate model is a computer code that estimates the solution to differential equations of fluid motion and thermodynamics to obtain time and space dependent values for temperature, winds and currents, moisture and/or salinity and pressure in the atmosphere and ocean.
The coupling of models is a commonly used approach when addressing the complex interactions between different components of earth system. In climate research and forecasting activities, advanced models are needed, which consider regional and local air-sea interaction.
Climate forcing is the physical process of affecting the climate on the Earth through a number of forcing factors. Examples of some of the most important types of forcings include: variations in solar radiation levels, volcanic eruptions, changing albedo, and changing levels of greenhouse gases in the atmosphere.
RCP 4.5 is more likely than not to result in global temperature rise between 2 degrees C, and 3 degrees C, by 2100 with a mean sea level rise 35% higher than that of RCP 2.6.
A sizeable portion of recent studies on future climate impacts have focused on a warming scenario called “RCP8. 5â€. This high-emissions scenario is frequently referred to as “business as usualâ€, suggesting that is a likely outcome if society does not make concerted efforts to cut greenhouse gas emissions.
