Experiment: xatxb

This run acts as the control pre-industrial LAM run for Europe. It uses lateral boundary conditions from xatxa and is as near to xatxa as possible. Compared to the global model, the horizontal diffusion has changed, the large scale precipitation, some aspects of the gravity wave scheme, and the high latittude filtering constants. All of these were changed in accordance with standard Hadley centre settings for the LAM, except that diffusion was stronger. There was a small enhancement throughout the atmosphere (from 1.7e+7 to 2.2e+7) but a stronger enhancement in the top 3 levels to 3.4e+7

Brief Description	Fuller Description	Total Length of Run (in years)	Averaging period (in years)	Spinup period (in years)	CO2 (in ppmv)	CH4 (in ppbv)	N2O (in ppbv)	CFC11 (in pptv)	CFC12 (in pptv)	Computer used for simulation	Compiler used for simulation	Date of first entry in datebase	Date of most recent modification to entry in database
New_European_LAM	European LAM for pre-industrial conditions. Configured as xatxa	14	6	8	279	703	276	0	0	turing	unknown	Not_Recorded	Not_Recorded
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Summary of Results for Experiment xatxb

Variable	DJF	JJA	ANN	Monthly	Variable
Plantary Albedo					Warm Month Mean
Surface Albedo					Cold Month Mean
					Mean Annual Temperature Cycle
					Mean Annual Precipitation Cycle
Meridional Stream Function
High Pass Eddy Kinetic Energy at 200 hPa
Low Pass Eddy Kinetic Energy at 200 hPa
High Pass Temperature Flux at 850 hPa