Assessing Factorial Snow Model 2.0 Performance in Forest Terrain - With Experimental Sub-Canopy Micro-Meteorological Observations
Typ
Examensarbete för masterexamen
Program
Publicerad
2019
Författare
Yttring, Hanna
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
This thesis is assessing the snow model FSM 2.0 in predictions of snow dynamics
in forest terrain. Two versions of the model have been used. One with default settings
and another with alternative local parameterizations of canopy characteristic
for input data. Experimental data acquisition was conducted in sub-alpine forest
terrain, during the 2019 snow season, Landwasser Valley of Graubunden Canton
in Switzerland. Site locations were selected to cover dense and canopy gap structures.
Processing and analyzing of field data was done in parallel to the field work.
Observed data proves the significance of implementing local parameters in forest
snow modeling. Results from the FSM 2.0 assessment show that using local canopy
characteristics for the site characteristics input data, improves model predictions
for incoming longwave radiaton for both dense and canopy gap sites. It also clearly
improves incoming shortwave radiation for dense sites, and makes a fair prediction
for canopy gap sites.
Beskrivning
Ämne/nyckelord
Snow Hydrology , Snow model , forest snow , snow dynamics , snow in forest , sub-canopy meteorological data , Snow Energy Balance , canopy characteristics , LiDAR , small scale canopy parameters