What is SimCLIM?

SimCLIM is a software tool designed to facilitate the assessment of risks from climate change for sustainability officers, consultants, policy makers, academics, non-governmental and governmental organizations and students.

SimCLIM uses the latest CMIP5 climate data. Maps, graphs and charts of various aspects of climate change can be generated spatially and for sites, for cities, provinces/states, nations, and the world. The flexibility of SimCLIM is limitless. Now the power to model past and future climate can be in your hands!

What can you do with SimCLIM?

  • Spatial scenarios (user chosen year, emission scenario, climate sensitivity, and GCM)
  • Site specific scenario (given location, emission scenario, climate sensitivity, and GCM)
  • Site specific sea level rise (with/without vertical land movement)
  • Site data (import, browse, analytics)
  • Extreme events (analytics, with/without climate change)
  • Supports ensembles of GCMs

What models can you develop?

  • Rain water tank (site specific)
  • Water balance (spatial)
  • Coastal erosion (site specific)
  • Degree day (site specific & spatial)
  • others on request

What areas are covered?

All of AR5 which includes:

  • Global included (0.5°x0.5° or ca. 50kmx50km; sea level rise 0.25°x0.25° or ca. 25x25km)
  • All countries/regions/subregions available (resolution dependent on country area, most 1kmx1km)
  • Specific countries with states are available on request
  • Some continents available on request

Which climate variables can you assess?

Monthly averages of:

  • Precipitation(mm)
  • Mean Temperature(˚C)
  • Minimum Temperature (˚C)
  • Maximum Temperature (˚C)
  • On request – Solar (W/m2) ; Relative humidity (%); Wind speed (m/s)

Key features

  • AR5: Support for the four key representative concentration pathway scenarios: RCP 2.6; 4.5; 6.0; and 8.5.
  • Climate scenarios including minimum, maximum and mean temperature available with 40 general circulation models to choose from and to apply in ensembles for virtually any place on Earth.
  • CORDEX Regional Climate Model (RCM) data available for nearly all the CORDEX regions of the world. Their inclusion with SimCLIM 4.0 supplements the 40 GCMs already available and can be used individually, as a group or combined with the GCMs in a master ensemble. The user has complete control over the mix of GCMs and RCMs that can be applied.
  • Flexible Windows-based program that can apply a wide range of previously downscaled data at virtually any scale (local to global) so that what if scenarios can be rapidly developed
  • Scientifically robust methods are applied that are based on IPCC guidelines, the latest climate science and an expert panel of advisors.
  • Climate data is presented in formats that are easily understood and transparent.
  • Downscaled data that is derived from virtually any statistical or dynamical method can be post-processed and added to SimCLIM so it can drive the generation of spatial scenarios as a member of a multi model ensemble.
  • Outputs can be exported to GIS programs such as ArcGIS and tabular data can be quickly exported to Excel for further analysis and graphing.
  • Extreme daily precipitation analysis AR5 dataset now with 22 general circulation model patterns.

Highlights for SimCLIM Desktop 4.0

  • Ensembles: Ensembles are now easy to create as you use on the fly; you no longer need to create and manage "ensemble templates".
  • Overhauled the Site Specific SLR and Climate Scenario Generators with a new interface and functionality
  • Supports the new CLIMsystems License Manager, allowing for network license management for organizations.
  • Many other improvements throughout.


Check out our YouTube Channel for videos.


System requirements

  • Windows XP, Vista, 7, 8, 8.1 and 10
  • 2gb+ disk space
  • 4gb RAM
  • Additional downscaled data can range in size from a few hundred megabytes to many gigabytes