Old News

1st July 2016

Dear ENVI-met Users, We are thrilled to announce the release of ENVI_met V 4.0 which comes with a bunch of new and exciting features.

Turning over from V3.1 to V4.0 involved about 8 years of development work both of the core ENVI-met model and of the supporting applications from the DatabaseEditor over Albero to LEONARDO.

With increasing computer possibilities, new ways of numerical simulations became available and have been implemented in ENVI-met. One of the most outstanding features is for sure the dynamical thermal wall model that allows to simulate walls with up to 3 different layers of materials with the option to use individual surfaces for every single wall or roof segment.

Also, the area of application of ENVI-met has shifted a lot in the recent years. Initially designed as an urban outdoor climate model, ENVI-met analysis can now take a multitude of perspectives:

From analysing plant growing conditions over pollutant dispersion up to “urbanising” synoptic meteorological data for the individual site conditions in building energy simulations. As a consequence, the ENVI-met system V4 is about 7 times the size of the last official release in 2004, with most of the routines revised and many of them re-written to take benefit of the increased computing resources.

Needlessly to say, the V4 has been tested massively of the past years by a large and independent scientific community. Many thanks to all of you who gave feedback and helped us to improve our system. There are more than 300 scientific papers indexed by Google Scholar only in the last year.

As you see from the matrix above we have with this new release implemented a change in the licensing model which we would like to present in the following:

Starting with V 4.0 from 1st July 2016, there will be from now on three versions of ENVI-met available:

In the past, we had only a single version of ENVI-met 3.x that was released free of charge with a very limited set of options and functionalities. So a natural question to ask is, why do we change our licensing model and move away from a complete free software solution?

Basically we have had two options: The one was to keep a “small” and free ENVI-met with limited functionalities like in Version 3.1 and restrict all the advanced modules to our personal and research usage. This way, there would be no need for proper documentation or different apps to interact with ENVI-met because we were the only ones using it.

The second option seems more reasonable for us, because it allows us to share our research and work with you:

That is to massively invest into the ENVI-met software system and make many of the advanced features available to the public (except those only available in the Consulting Expert Version). Doing so, we still keep a small, free ENVI-met Version for anyone who wants to get in touch with urban microclimate on a non-commercial basis. On the other hand, we do offer the PRO Version with a fair licensing model for commercial, Scientific&Education and general non-commercial applications.

With this change of our license model we hope to have devised a good compromise between having a sustainable business model that allows us to continue to develop ENVI-met and also make it available at a fair price for everybody.

To celebrate the new release and to allow a smooth transition for existing project work, we provide a FREE SCIENCE license to all users running until the End of Juli 2016 (for details, see the ENVI-met DownloadCenter at

All the best, Your ENVI_MET Team

5th June 2016

We are happy and proud to introduce a new PhD Thesis written by Helge Simon from our lab that has just be defended.

This thesis describes a number of new features introduced in ENVI-met including a wide set of numerical testing and in-situ validations.

The main features included are:

  • The new 3D plant-as-object model allowing a very realistic simulation of the plants transpiration behaviour
  • Introduction of a BVOC chemical model allowing to simulate the emission of biogen gases by plants and their impact on the NO-NO2-Ozone reactions (only in the Xpert Version of ENVI-met so far)
  • Evaluation of the new multi-node wall model including validation studies
  • Coupling of ENVI-met with MUKLIMO_3 of the German Wather Service DWD (continuation of work)

The thesis can be found here:

Most of the features included are already part of the new ENVI-met 4 engine.

Our congrats to Helge and enjoy reading!


Michael Bruse, CDO

ENVI-met | Decoding Urban Nature

9th Oct 2015

ENVI-met V3.1 is no longer provided as download. User support in our forum will kept up for the next 6 months and then will be closed as well. User support and forum for LEONARO 3.x has been closed down- please only use LEONARDO 2014 now.

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news/start.txt · Last modified: 2017/08/25 21:44 by enviadmin