Snow and ice modeling in the southern hemisphere

[abbylute]

Hello,

I was wondering if someone could provide some guidance on how to modify the settings file, and possibly snow_frost.py, to run in the southern hemisphere (beyond just setting the maskmap and gauge location).

My experience has been that I have to set a SeasonalSnowMeltSin value in the settings file in order to change the timing of glacier melt to southern hemisphere summer. Is there a recommended value for this parameter or better yet an input file that can be called on regardless of location? I saw an input file was specified in the settings files supporting the recent paper Hanus et al., (2024).

I'm also wondering if hardcoded values in snow_frost.py need to be modified to work properly in a southern hemisphere context, such as:
self.var.summerSeasonStart = 165
self.var.IceDayDegrees = 180./(259- self.var.summerSeasonStart)
if (dateVar['doy'] > self.var.summerSeasonStart) and (dateVar['doy'] < 260):
SummerSeason = np.sin(math.radians((dateVar['doy'] - self.var.summerSeasonStart) * self.var.IceDayDegrees))

Are there any other settings that need to be modified to run CWatM in the southern hemisphere?

I also welcome any other suggestions for improving snowmelt simulations in diverse geographies.

Thanks in advance,
Abby