Estimate the underground water temperature as the mean of the air temperature in the 365 days before. This function use igraph::running_mean() to calculate running mean.
Arguments
- path_data
Path to the folder containing air temperature "Tair.nc" created by
TNET_readSafran()- path_export
Path to the folder to export the file "Tg.nc". If
NULL,path_export = path_data.- shapefile
Path to the shapefile with all info on segments. See
TNETutils_getSAFRAN_fromShape()for all mandatory columns.
Details
Steps of the calculations are the following:
Step 1 - Calculate daily mean air temperature
Calculate the mean daily air temperature on SAFRAN grid
Step 2 - Calculate air temperature on river segments
Using TNETutils_getSAFRAN_fromShape() function, we get all info af SAFRAN grid on each river segments to calculate daily mean air temperature on each segments.
Step 3 - Calculate for each time t, mean temperature of the t-365 days
The ground temperature (\(T_g(t)\)) at a given time t is calculated as the average of the air temperatures (\(T_{\text{air}}(t - i)\)) over the previous 365 days:
$$T_g(t) = \frac{1}{365} \sum_{i=1}^{365} T_{\text{air}}(t - i)$$
where:
\(T_g(t)\) : Ground temperature at time t.
\(T_{\text{air}}(t - i)\) : Air temperature i days before time t.
Examples
TNET_computeTnappe(path_data = path/to/data,
path_export = path/to/export/folder,
shapefile = path/to/shapefile.shp)
#> Error: object 'to' not found
############################################################
## Using this function with TNET_initializeSim() function ##
############################################################
infoSimu <- TNET_initializeSim(...)
#> Error: '...' used in an incorrect context
TNET_readSafran(...)
#> Error in TNET_readSafran(...): could not find function "TNET_readSafran"
TNET_computeTnappe(path_data = infoSimu$safranPath,
path_export = infoSimu$hydroPath,
shapefile = infoSimu$TOPAGE_shape)
#> Error: object 'infoSimu' not found