Subject: The climatic correction of basal crop coefficient Posted: 1/11/2019 Viewed: 5721 times
"The Kcb mid and Kcb end values are typical values expected under a standard climatic condition defined in FAO 56 as a sub-humid climate having average daytime minimum relative humidity (RHmin = 45%) and having calm to moderate wind speeds averaging 2 m/s. For specific adjustment in climates where RHmin and u2 are larger or smaller than the standard values, the Kcb mid as well as Kcb end values are adjusted"
I need clarification on this matter, should I make an adjustment to Kcb values since my relative humidity and wind speed data differ from the standard condition? OR does WEAP-MABIA have the features to adjust Kcb values according to my climatic condition, allowing me to input the standard Kcb values recommened by FAO56 without adjusting them beforehand?
Mr. Jack Sieber
Subject: Re: The climatic correction of basal crop coefficient Posted: 1/14/2019 Viewed: 5714 times
Yes, you should make an adjustment to Kcb values, because your relative humidity and wind speed data differ from the standard condition. WEAP does NOT automatically adjust these based on climate data.
Topic "The climatic correction of basal crop coefficient"