Simulated One Point Mode
From krc
Simulated One Point Mode
This mode is currently only supported for Mars.
It requires to provide: 1: a Temperature T 2: @ a season ls 3: @ a LTST hour
OUT = krc(lat = 0., lon = 0., T = 170., ls = 152.4, hour = 3.12)
The output is the equivalent thermal inertia in J m-2 K-1 s-1/2, in this case OUT = XXX.
The One-Point Mode outputs a TI (SI) for an array of input temperatures with the given parameters
It can output various values that indicate why a TI was not derived for failure cases:
- -600: The Temperature provided is lower than the lowest model output. Possible Frost Presence
- -500: No value was derived or returned. KRC may have failed to run all together
- -400: Negative TI value. This is a non-physical return as a function of the fitting routine
- -300: TI value larger than 2200 SI. 2200 SI is the top of the available lookup table and extrapolation is not permitted
- -200: Returned TI value doesn't meet proximity criterion (TI_Guess_PCT)
- -100: Bad TI_Guess / TI_Guess_PCT combination. This is most likely a user error
SOMETHING ABOUT TI_Guess_PCT and TI_Guess
Validity not met => -200.
OUT = krc(T=190,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=300.,TI_Guess_PCT=0.05)
Validity met => 334.
OUT = krc(T=190,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=300.,TI_Guess_PCT=0.2)
OUT = krc(T=190,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=300.) #No validity criterion specified, good guess => 334.
OUT = krc(T=190,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=900.) #No validity criterion specified, poor guess => 641. You shoot yourself in the foot
OUT = krc(T=190,ls=0.,hour=4.,lat=12.,lon=12.) #No guess, slow, => 334.
OUT = krc(T=190,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess_PCT=0.2) #Pathological Case; KRC runs, sets TI_Guess to 0., and returns a flag => -100.
OUT = krc(T=130,ls=0.,hour=4.,lat=12.,lon=12.) #Below Frost point => -600. (The solution was a negative TI)
OUT = krc(T=130,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=200.) #Below Frost point, horrible guess but -600
OUT = krc(T=130,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=200.,TI_Guess_PCT=0.5) #Below Frost point, horrible guess -200
OUT = krc(T=500,ls=0.,hour=4.,lat=12.,lon=12.) #Much too warm => flags high TI => -300.
OUT = krc(T=500,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=200.) #Much too warm, poor guess => flags high TI => -300.
OUT = krc(T=500,ls=0.,hour=4.,lat=12.,lon=12.,TI_Guess=200.,TI_Guess_PCT=0.1) #Much too warm, poor guess => flags poor guess => -200.
OUT = krc(T=190,ls=000.00,hour=4.,lat=12.,lon=12.) #No guess, slow, => 334.
OUT = krc(T=190,ls=359.99,hour=4.,lat=12.,lon=12.) #No guess, slow, => 334.
OUT = krc(T=190,ls=359.99,hour=4.,lat=12.,lon=12.,DELLS=0.) #sets DELLS=0. to avoid this issue but error message: Please do not set both DELLS and DELJUL XXX
CORRECTION MADE: Not an issue anymore since Christopher extended lookup table to Ls<0 and Ls>360.
