Units.
All observation, parameters and variables have assigned units. These are checked at run-time and any errors logged.
A sample observation file header follows.
Observation header file format
t 1 (°C) comment. e.g. air temperature.
rh 1 (%) comment. e.g. relative humidity.
u 1 (m/s) comment etc.
SunAct 1 (h)
ppt 1 (mm/d)
Qsi 1 (W/m^2)
Qso 1 (W/m^2)
Qn 1 (W/m^2)
$Qsi mul(Qsi\t 277.8) unit conversion
$Qso mul(Qso\t 277.8)
$Qn mul(Qn\t 277.8)
$ea ea(t\t rh) (kPa) vapour pressure
Note that there is one or more spaces or tabs between the number of observations and the units and after. The remainder of the line is treated as a comment.
Units must be enclosed in parentheses.
Case is significant in all units and multipliers..
° (degree) is not required but may be constructed using ALT key and Num Lock and 0176 or 0186 entered on the numeric key pad.
% (percentage) is ignored.
Multipliers.
Y | Yotta | 1e+24 |
Z | Zetta | 1e+21 |
E | Exa | 1e+18 |
P | Peta | 1e+15 |
T | Tera | 1e+12 |
G | Giga | 1e+9 |
M | Mega | 1e+6 |
k | kilo | 1e+3 |
K | Kilo | 1e+3 |
h | hecto | 1e+2 |
H | Hecto | 1e+2 |
D | Deka | 1e+1 |
d | deci | 1e-1 |
c | cent | 1e-2 |
m | mili | 1e-3 |
u | micro | 1e-6 |
µ | micro | 1e-6 |
n | nano | 1e-9 |
p | pico | 1e-12 |
f | femto | 1e-15 |
a | atto | 1e-18 |
z | zepto | 1e-21 |
y | yocto | 1e-24 |
Units.
A | Ampere | 1 | |
Bq | becquerel | 1 | l/s |
Btu | InternationalTableBtu | 1055.05585262 | Kg*m^2/s^2 |
C | Coulomb | 1 | A*s |
Ci | Curie | 3.7*1010 | l/s |
F | Farad | 1 | A^2*s^4/Kg*m^2 |
Fdy | Faraday | 96487 | A*s |
Gy | Gray | 1 | m^2/s^2 |
H | Henry | 1 | Kg*m^2/A^2*s^2 |
Hz | Hertz | 1 | s^-1 |
J | Joule | 1 | Kg*m^2/s^2 |
K | Kelvin | 1 | "), |
Knot | NauticalMilesPerHour | 463.0/900.0 | m/s |
N | Newton | 1 | Kg*m/s^2 |
Ohm | Ohm | 1 | Kg*m^2/A^2*s^3 |
OzUK | UKFluidOunce | 2.8413075e-5 | m^3 |
P | Poise | 0.1 | Kg/m*s |
Pa | Pascal | 1 | Kg/m*s |
Pdl | Poundal | 0.13825495376 | Kg*m/s^2 |
Pica | Pica | 1.0/72.0 | in |
R | Roentgen | 0.000258 | A*s/Kg |
S | Siemens | 1 | A^2*s^3/Kg*m^2 |
St | Stokes | 0.0001 | m^2/s |
Sv | Sievert | 1 | m^2/s^2 |
T | Tesla | 1 | Kg/A*s^2 |
U | UnifiedAtomicMass | 1.6605402e-27 | Kg |
V | Volt | 1 | Kg*m^2/A*s^2 |
W | Watt | 1 | Kg*m^2/s^3 |
Wb | Weber | 1 | Kg*m^2/A*s^2 |
acre | Acre | 4046.87260987 | m^2 |
arcmin | ArcMinute | 2.9088820866e-4 | r |
arcs | ArcSecond | 4.848136111e-6 | r |
atm | Attmosphere | 101325 | Kg/m*s^2 |
au | AstronomicalUnit | 1.495979*1011 | m |
b | Barn | 1e-28 | m^2 |
bar | Bar | 100000 | Kg/m*s^2 |
bbl | Barrel | 0.158987294928 | m^3 |
bu | Bushel | 0.03523907 | m^3 |
c | LightSpeed | 299792458 | m/s |
cal | Calorie | 4.1868 | Kg*m^2/s^2 |
cd | Candela | 1 | |
chain | Chain | 20.1168402337 | m |
ct | Carat | 0.0002 | Kg |
cu | USCup | 2.365882365e-4 | m^3 |
d | day | 86400 | s |
dyn | Dyne | 0.00001 | Kg*m/s^2 |
eV | ElectronVolt | 1.60217733e-19 | Kg*m^2/s^2 |
erg | Erg | 0.0000001 | Kg*m^2/s^2 |
fath | Fathom | 1.82880365761 | m |
fbm | BoardFoot | 0.002359737216 | m^3 |
fc | Footcandle | 10.7639104167 | cd*sr/m^2 |
fermi | Fermi | 1e-15 | m |
flam | Footlambert | 3.42625909964 | cd/m^2 |
ft | InternationalFoot | 0.3048 | m |
ftUS | SurveyFoot | 0.304800609601 | m |
g | Gram | 1 | |
ga | StandardFreefall | 9.80665 | m/s^2 |
gal | USGallon | 0.003785411784 | m^3 |
galC | CanadianGallon | 0.00454609 | m^3 |
galUK | UKGallon | 0.004546092 | m^3 |
gf | GramForce | 0.00980665 | Kg*m/s^2 |
grad | Grade | 1.57079632679e-2 | r |
grain | Grain | 0.00006479891 | Kg |
h | Hour | 3600 | s |
ha | Hectare | 10000 | m^2 |
hp | horsepower | 745.699871582 | Kg*m^2/s^2 |
in | Inch | 0.0254 | m |
inH2O | InchesOfWater | 248.84 | Kg/m*s^2 |
inHg | InchesOfMercury | 3386.38815789 | Kg/m*s^2 |
int | CRHM time step | 3600 | s |
kip | KilopoundForce | 4448.22161526 | Kg*m/s^2 |
kph | KilometersPerHour | 5.0/18.0 | m/s |
l | Liter | 0.001 | m^3 |
lam | Lambert | 3183.09886184 | cd/m^2 |
lb | AvoirdupoisPound | 0.45359267 | Kg |
lbf | PoundForce | 4.44822161526 | Kg*m/s^2 |
lbt | TroyPound | 0.3732417216 | Kg |
lm | Lumen | 1 | cd*sr |
lx | Lux | 1 | cd*sr/m^2 |
lyr | LightYear | 9.46052840488*1015 | m |
m | Meter | 1 | |
mho | Mho | 1 | A^2*s^2/Kg*m^2 |
mi | InternationalMile | 1609.344 | m |
miUS | USStatuteMile | 1609.34721869 | m |
mil | Mil | 0.0000254 | m |
min | Minute | 60 | s |
mmHg | MilimeterOfMercury | 133.322368421 | Kg/m*s^2 |
mol | Mole | 1 | |
mph | MilesPerHour | 0.44704 | m/s |
nmi | NauticalMile | 1852 | m |
oz | Ounce | 0.028349523125 | Kg |
ozfl | USFluidOunce | 2.95735295625e-5 | m^3 |
ozt | TroyOunce | 0.0311034768 | Kg |
pc | Parsec | 3.08567818585106 | m |
ph | Phot | 10000 | cd*sr/m^2 |
pk | Peck | 0.0088097675 | m^3 |
psi | PoundsPerSquareInch | 6894.75729317 | Kg/m*s^2 |
pt | Pint | 0.000473176473 | m^3 |
qt | Quart | 0.000946352946 | m^3 |
r | Radian | 1 | |
rad | Rad | 0.01 | m^2/s^2 |
rd | Rod | 5.02921005842 | m |
rem | Rem | 0.01 | m^2/s^2 |
s | Second | 1 | |
sb | Stilb | 10000 | cd/m^2 |
slug | Slug | 14.5939029372 | Kg |
sr | Steradian | 1 | |
st | Stere | 1 | m^3 |
t | MetricTon | 1000 | Kg |
tbsp | Tablespoon | 1.47867647813e-5 | m^3 |
therm | EECTherm | 105506000 | Kg*m^2/s^2 |
ton | ShortTon | 907.18474 | Kg |
tonUK | UKLongTon | 1016.0469088 | Kg |
torr | Torr | 133.322368421 | Kg/m^2 |
tsp | Teaspoon | 4.92892159375e-6 | m^3 |
yd | InternationalYard | 0.9144 | m |
yr | Year | 31556925.9747 | s |
° | Degree | 1.74532925199e-2 | r |
°C | DegreeCelsius | 1.0 | K |
°F | DegreesFahrenheit | 1.0/1.8 | K |
°R | DegreesRankine | 1.0/1.8 | K |
µ | Micron | 1e-6 | m |
Å | Angstrom | 1e-10 | m |