Is there a document that explains the difference between Coastal Region and Interior Plains Region for the Irrigation Region parameter?  I mean, other than the Wiki that just says that these are the two possible values?

 

I live in the Sacramento Valley.  Summers are hot and dry.  Winters are cool and moderately rainy.  Seems like it's probably Interior Plains because we have no marine effect, but I'm just not sure.

 

Appreciate any advice or directions to more documentation.

 

Thanks.

Hi mbrossart,

 

If you are not next to the beach, then use interior. It is used for calculating the amount of evaporation:

/*
* BaroAbsolute - Mean site barometric pressure In kPa
* http://cagesun.nmsu.edu/~zsamani/papers/net_radiation_paper.pdf
* KR = KRA * (Pressure/(101.3))^0.5
* KRA:
* Empirical coeff:
* 0.17 for interior regions
* 0.20 for coastal regions
*/
region*sqrt(BaroAbsolute/101.3);

With kind regards,

Michel