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--- testbed [2017/09/15 18:14] – [Science objectives] neggers
+++ testbed [2021/01/22 22:21] (current) – external edit 127.0.0.1
@@ Line 11: / Line 11: @@
 ==== A brief history ====
-The InScAPE parameterization testbed is a continuation of the [[http://www.knmi.nl|KNMI]] Parameterization Testbed (KPT). The KPT was initiated and developed by Prof. Roel Neggers when affiliated at the KNMI in the period 2007-2013. What KPT and InScAPE share is the [[http://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-11-00162.1|general modelling and evaluation strategy]] that is applied. Currently the InScAPE testbed includes simulations at and observational data from a number of meteorological supersites. The home site is the Jülich ObservatorY for Cloud Evolution ([[http://gop.meteo.uni-koeln.de/ag_crewell/doku.php?id=sites:joyce|JOYCE]]) that is located at the Research Centre Jülich, and is operated by the [[http://gop.meteo.uni-koeln.de/ag_crewell/doku.php?id=home|research group of Prof.Susanne Crewell]]. Simulations are also performed at the Barbados Cloud Observatory ([[http://www.mpimet.mpg.de/en/science/the-atmosphere-in-the-earth-system/initiatives/barbadosstation.html|BCO]]), in order to study fast feedback mechanisms between subtropical marine boundary-layer clouds and the changing global climate. Recently the [[http://gop.meteo.uni-koeln.de/ag_crewell/doku.php?id=sites:awipev| AWIPEV]] site at Ny Ålesund was added to the list of supersites, as part of our participation in the ongoing TR172 project on Arctic Amplification [[http://www.ac3-tr.de/|(AC)]]<sup>3</sup>. In the near future we also plan to perform simulations at the ARM SGP site.
+The InScAPE parameterization testbed is a continuation of the [[http://www.knmi.nl|KNMI]] Parameterization Testbed (KPT). The KPT was initiated and developed by Prof. Roel Neggers when affiliated at the KNMI in the period 2007-2013. What KPT and InScAPE share is the [[http://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-11-00162.1|general modelling and evaluation strategy]] that is applied. Currently the InScAPE testbed includes simulations at and observational data from a number of meteorological supersites. The home site is the Jülich ObservatorY for Cloud Evolution ([[http://atmos.meteo.uni-koeln.de/ag_crewell/doku.php?id=sites:joyce|JOYCE]]) that is located at the Research Centre Jülich, and is operated by the [[http://atmos.meteo.uni-koeln.de/ag_crewell/doku.php?id=home|research group of Prof.Susanne Crewell]]. Simulations are also performed at the Barbados Cloud Observatory ([[http://www.mpimet.mpg.de/en/science/the-atmosphere-in-the-earth-system/initiatives/barbadosstation.html|BCO]]), in order to study fast feedback mechanisms between subtropical marine boundary-layer clouds and the changing global climate. Recently the [[http://atmos.meteo.uni-koeln.de/ag_crewell/doku.php?id=sites:awipev| AWIPEV]] site at Ny Ålesund was added to the list of supersites, as part of our participation in the ongoing TR172 project on Arctic Amplification [[http://www.ac3-tr.de/|(AC)]]<sup>3</sup>. In the near future we also plan to perform simulations at the ARM SGP site, in collaboration with the ongoing LASSO initiative. FIXME
+==== Multi-year idealized DALES ====
+Downscaling of a point-sampled profile from a GCM at a site of interest.
+LES acts as a generator of high-frequency fine-scale variability around this larger-scale state.
+Periodic lateral boundaries, homogeneous prescribed advective forcing.
+These forcings have the shape of prescribed tendencies for the horizontal advection, and prescribed subsidence velocity for the vertical advection. As a result, the latter becomes interactive with vertical gradients as generated by the LES simulation.
+Forcings and boundary conditions are based exclusively on ECMWF analyses and short-range (3hr) forecasts. Automated scripts have been developed to this purpose, and can be used to generate forcings at any location in the world, as far back in time as is covered by the MARS archive of IFS output.
+DALES is equipped with a simplified version of the ECWMF surface and soil scheme, allowing simulation with evolving surface properties and interactive surface heat fluxes.
+Domain size of 12.6x12.6x5km. Interactive radiation, using ECMWF state (including clouds) above the turbulent domain. Background ozone profile.
+While simulations are simplified, it does make them more transparent and computationally efficient. A benefit of simplicity is the huge gain in time coverage that is allowed, allowing for multi-year simulation. Currently our database of DALES simulations covers five years of 6-month (April-September) periods from 2012 to 2016.
+The database of idealized DALES simulations has been used in various studies. ...
+Recently the Inscape group is starting to experiment with blending observations from field campaigns with model-derived forcings for LES simulations. (NARVAL, ACLOUD, PASCAL)
+FIXME
 ==== ICON-LEM around supersites ====