UMD Models

Place		University of Maryland
Model Name		PLM Ecological Component	Economic Component	River Estuary Ecosystem	River Box Model
Model Type		"D,Sp,Sim"	"D,Sp,E"	"D,Sim"	"Sp-Box,E"
Spatial Extent		Pax Watershed	Pax Counties	Pax River	Pax River
Area	(km2) w/water	2400	9520
Spatial Resolution	# cells/ segmts	6000			11
	cell size (km2)	0.4	0.04		25
	volume (km3)				0.2-1
	cells in Pax	6000			11
Temporal Resolution	Extent	50 yrs		multi yrs	10 yrs
Temporal Resolution	Time step	1 day	1 year	1 day	2 weeks
#Vars/cell		20 State Vars			10
Calibration	#Data sites	10-15
Model Components (•= calculated in model)	Surface Water	•	•
	Ground Water	•	•
	Stream Flow	•
	Sed.(in runoff)	•
	Nutrients	•		•	•
	Trace Elements
	Wat.Qual.,e.g.BOD	•	•	•	•
	SAV			•
	Benthos			•
	Plankton	•		•	Chl a
	Fish
	Terrest.Producers	•	•
	Other Variables	human activ.(BMPs); terr. consumers	human activities		salt