Showing posts with label EGU 2019. Show all posts
Showing posts with label EGU 2019. Show all posts

Sunday, April 14, 2019

Tom&Dunnians

Since 10 year, the Saturday after the EGU meeting, Guenter Bloeschl (GS) organizes at TU Wien a meeting of  hydrologists called the Wien Hydrology Symposium. This year among the guest there was Thomas Dunne (GS) who talked about fluvial geomorphology. Tom is universally known for his work as hydrologist and geomorphologist (both of them) and students will realize that saturation excess mechanism of overland flow formation take its name from him as Dunnian runoff.  Here you can find a picture of him with my own representation of "his" process.
My draw is also here below for free usage (I have also the image for the Hortonian runoff though). 



Thursday, April 4, 2019

EGU Wien 2019: Two numerical models to solve Richards and energy equations

This contribution discusses two methods of integration for Richards equation and the heat equation (for T > 0 centigrades).  Results are encouraging and show that temperature could be important to get the right runoff production.

The model uses new numerics based on work by Vincenzo Casulli and Paola Zanolli, called nested Newton. The original poster is obtained by clicking on the figure.

EGU Wien 2019: Modeling the transpiration using the Schymanski-Or formula on alpine grassland sites

You can do better than usual in  modelling by using the Schymanski-Or formulation of the evapotranspiration solution obtained by assuming the Penman ansatz. Here you can find some work related to it made within GEOframe.
I am not co-author of the poster, he is Michele Bottazzi, one of my Ph.D. students. But  it is in line with our common findings.
Please find the full version of the poster by clicking on the Figure.

EGU Wien 2019: Snow Water Equivalent modeling: comparing GEOtop physically based approach with temperature-index-based models in GEOframe-NewAge

In the work for a new version of GEOtop snow modelling, we are comparing here the results given by the GEOtop 2.0 snow model with those by the GEOframe components. Comparison is made in one point and, in both cases, requires calibration which is, however, made on different quantities for the different context. To get the results give a look to the poster.
The work uses the data given by ARPA Val d'Aosta retrieved at Torgnon site
Please find the high resolution poster by clicking on the figure above.