Module Daily to Hourly PET
Derive hourly from daily evapotranspiration using sinusoidal distribution. 
References:
- Ambikadevi, K.M. (2004): Simulation of Evapotranspiration and Rainfall-runoff for the Stillwater River Watershed in Central Massachusetts. Environmental & Water Resources Engineering Masters Projects, University of Massachusetts, Amherst online
- Author: O.Conrad (c) 2011
 
- Specification: grid
 
- Menu: Climate|Evapotranspiration
 
Parameters
|   | Name | Type | Identifier | Description | Constraints | 
| Input | Daily Data | Table (input) | DAYS | - | - | 
| Output | Hourly Data | Table (output) | HOURS | - | - | 
| Options | Julian Day | Table field | JD | - | - | 
 | Evapotranspiration | Table field | ET | - | - | 
 | Precipitation (*) | Table field | P | - | - | 
 | Latitude | Floating point | LAT | - | Minimum: -90.000000 Maximum: 90.000000 Default: 53.000000 | 
| (*) optional | 
Command-line
Usage: saga_cmd climate_tools 7 -DAYS <str> [-JD <str>] [-ET <str>] [-P <str>] [-HOURS <str>] [-LAT <str>]
  -DAYS:<str> 	Daily Data
	Table (input)
  -JD:<str>   	Julian Day
	Table field
  -ET:<str>   	Evapotranspiration
	Table field
  -P:<str>    	Precipitation
	Table field
  -HOURS:<str>	Hourly Data
	Table (output)
  -LAT:<str>  	Latitude
	Floating point
	Minimum: -90.000000
	Maximum: 90.000000
	Default: 53.000000