Jeffrey Walker
USRA/NASA-GSFC
The Catchment-Based LSM
•
•
srfexc
=
srfexc
–
es
–
srflow
+
i
+
a
•
rzexc
=
rzexc
–
ev
+
srflow
–
rzflow
+
b
•
catdef
=
catdef
+
et
–
rzflow
+
baseflow
+
c
•
•
where
a
,
b
and
c
are correction terms to
ensure mass balance
•
•
•
Using a first-order Taylor series expansion: