Version 2020a (released on 14 May 2020)


  1. Need help? Please let us know in the UMEP Community.

  2. Please report issues with the manual on the GitHub Issues.

  3. Please cite SUEWS with proper information from our Zenodo page.

4.2. Version 2020a (released on 14 May 2020)#


In a future release, we will ONLY deliver SUEWS along with SuPy as a command line tool suews-run: release of standalone SUEWS binaries will be stopped to ease our maintenance load and to facilitate rapid developments. Users will need to have Python 3.6+ to install SuPy:

python3 -m pip install -U supy

However, as the source code of SUEWS are public, users can feel free to compile standalone binaries for platforms of their own interests.

  • Improvement

    1. A ponding water scheme is added in the automatic irrigation calculation; useful when a certain depth of ponding water to maintain in irrigation (e.g., flooding irrigation in rice crop-field).

    2. Irrigation fraction can be specified for all surfaces (previously only available for vegetated surfaces)

    3. A U-shape approach for calculating HDD/CDD is introduced to account for a wide comfort zone between heating and cooling critical temperatures.

  • Changes

    1. A new RoughLenHeatMethod option 5: adaptively choose option 1 for fully pervious surface or 2 otherwise (if any impervious surface exists).

    2. A new column H_maintain is added in SUEWS_Irrigation.txt to set ponding water depth.

    3. New columns to specify irrigation fractions for non-vegetated surfaces in SUEWS_SiteSelect.txt.

    4. A new scheme option BaseTMethod in RunControl.nml to set calculation scheme for HDD/CDD.

  • Fix


  • Known issues

    1. Wind direction is not currently downscaled so non -999 values will cause an error.