meteoadriatic
Member
Dear WRF community,
In IEVA paper by Wicker & Skamarock, An Implicit-Explicit Vertical Transport Scheme for Convection Allowing Models (2020), authors stated:
and later
The w-damping is obviously controlled by w_damping namelist.input flag, but would you kindly point me to the heating limiter filter configuration? It is controllable through namelist at all, or if not, how to remove it or control it's strength within code?
I would like to try some experiments without any of vertical motion limitations in order to see if that improves convection simulation in my case, and IEVA scheme might be enough to keep model from getting unstable.
Thank you in advance,
Ivan Toman
In IEVA paper by Wicker & Skamarock, An Implicit-Explicit Vertical Transport Scheme for Convection Allowing Models (2020), authors stated:
For example, the High-Resolution Rapid Refresh (HRRR) model (Benjamin et al. 2016), which is based on a configuration of the Weather Research and Forecasting - Advanced Research WRF (WRF-ARW) community modeling system (Skamarock et al. 2008), uses two filters to control the magnitude of the vertical motion. The most significant filter is the reduction of latent heating by placing an upper limit on the heating rate produced by the physics parameterizations (mostly by phase changes within the cloud microphysics) at each time step
and later
The updraft data shown in Fig. 1 is adapted using data from Potvin et al. (2019). The Center for the Analysis and Prediction of Storms (CAPS, Snook et al. 2019) and the HRRR forecasts both use the latent heat limiting and w-damping...
The w-damping is obviously controlled by w_damping namelist.input flag, but would you kindly point me to the heating limiter filter configuration? It is controllable through namelist at all, or if not, how to remove it or control it's strength within code?
I would like to try some experiments without any of vertical motion limitations in order to see if that improves convection simulation in my case, and IEVA scheme might be enough to keep model from getting unstable.
Thank you in advance,
Ivan Toman