GENIE ExampleGENIE1expt - Revision history

Genie-user: GENIE:ExampleGENIE1expt moved to GENIE ExampleGENIE1expt: make public

2008-03-06T08:49:15Z

GENIE:ExampleGENIE1expt moved to GENIE ExampleGENIE1expt: make public

Genie-user: /* Running the model */ removed space in configs/ genie_...

2008-01-21T15:49:45Z

Running the model: removed space in configs/ genie_...

Genie-user: /* A simple experiment examining the effects of atmosphere parameters on climate and its sensitivity */

2007-07-24T16:32:47Z

A simple experiment examining the effects of atmosphere parameters on climate and its sensitivity

Genie-user: /* Setting up the model */

2007-07-24T15:29:46Z

Setting up the model

Genie-user: /* Further work */

2007-07-24T11:38:23Z

Further work

Genie-user: /* Further work */

2007-07-24T11:23:13Z

Further work

Genie-user: /* Further work */

2007-07-24T11:22:01Z

Further work

Genie-user: /* Further work */

2007-07-24T11:16:36Z

Further work

Genie-user: /* Further work */

2007-07-24T11:15:57Z

Further work

Genie-user: /* Setting up the model */

2007-07-24T11:03:27Z

Setting up the model

@@ Line 27: / Line 27: @@
 **	qrsh –q interactive.q
 *	Start the model experiment from /genie-main by using
-**	./genie_example.job –f configs/ genie_eb_go_gs_expt1.config
+**	./genie_example.job –f configs/genie_eb_go_gs_expt1.config
 *	You will now get output to the screen and the experiment will take around an hour
 *	Meanwhile output datasets will be written to /genie-output/genie_eb_go_gs_expt1

← Older revision		Revision as of 16:32, 24 July 2007
Line 1:		Line 1:
		+	Tim Lenton (t.lenton@uea.ac.uk)
		+
	==A simple experiment examining the effects of atmosphere parameters on climate and its sensitivity==		==A simple experiment examining the effects of atmosphere parameters on climate and its sensitivity==
	Aim: To examine the spatial pattern of temperature for genie_eb_go_gs (default 36x36x8 grid), examine its sensitivity to varying parameters in the simple atmosphere model (EMBM), and evaluate the model climate sensitivity		Aim: To examine the spatial pattern of temperature for genie_eb_go_gs (default 36x36x8 grid), examine its sensitivity to varying parameters in the simple atmosphere model (EMBM), and evaluate the model climate sensitivity

@@ Line 13: / Line 13: @@
 **	changing the frequency of ‘full’ (or restart) model datatsets, by setting ea_4, go_4, gs_4 = 20000 (every 200 years, in goldstein timesteps – to give 10 datasets)
 **	changing the frequency of timeseries output, by setting ea_5, go_5, gs_5 = 100 (to give annual 1 January snapshots)
 *	First we are going to run at pre-industrial (278ppmv) CO2 level, which requires no change to ea_20
 *	However, you can generate a unique instance of the model by varying key EMBM parameters ea_12 to ea_15. Some suggested reasonable ranges for these parameters are as follows:

@@ Line 35: / Line 35: @@
 ** e.g. /genie-output/genie_eb_go_gs_expt2/goldstein/spn.opsit - this file lists maximum and minimum meridional overturning streamfunctions in the Pacific and Atlantic and their locations.
 *** compare the values between expt1 and expt2 to see the effect of doubling CO2
-*	You can look at the netCDF results using Panoply or Matlab scripts.
+*	You can look at the netCDF results using e.g. Panoply.

@@ Line 32: / Line 32: @@
 *	You can view the ascii output files
 ** e.g. /genie-output/genie_eb_go_gs_expt2/embm/spn.airt – this file lists hemispheric mean air temperatures and global maximum and minimum air temperatures and their locations.
-** e.g. /genie-output/genie_eb_go_gs_expt2/goldstein/spn.opsit - this file lists maximum and minimum meridional overturning streamfunctions in the Pacific and Atlantic and their locations.
+*** compare the values between expt1 and expt2 to see the effect of doubling CO2
 *	You can look at the netCDF results using Panoply or Matlab scripts.

← Older revision	Revision as of 08:49, 6 March 2008
(No difference)

@@ Line 30: / Line 30: @@
 ===Further work===
 *	Repeat the above but create genie_eb_go_gs_expt2.config in which you change EXPID to genie_eb_go_gs_expt2, and set ea_20 = 2.0 (for 2x pre-industrial CO2)
-*	You can view the ascii output files (e.g. /genie-output/genie_eb_go_gs_expt2/embm/spn.airt – this file lists hemispheric and global mean air temperatures at the frequency you specified, 100 years).
+*	You can view the ascii output files
 *	You can look at the netCDF results using Panoply or Matlab scripts.

@@ Line 7: / Line 7: @@
 *	Go to /configs and copy genie_eb_go_gs.config to genie_eb_go_gs_expt1.config (or similar)
 *	In the new config file change the EXPID to genie_eb_go_gs_expt1
-*	Set the run length to 2000 years by changing ma_koverall_total=1000000 (Note: this is the total number of atmospheric timesteps and by default the EMBM takes 5 timesteps per ocean timestep and the ocean takes 100 timesteps per year, therefore 500 timesteps per year for the EMBM and 500*2000=1000000)
+*	Set the run length to 2000 years by changing ma_koverall_total=1000000
 *	You need to control model data output. We recommend the following choices:
 **	changing the frequency of ‘health checks’, by setting ea_3, go_3, gs_3 = 10000 (every 100 years, in goldstein timesteps)
@@ Line 13: / Line 14: @@
 **	changing the frequency of timeseries output, by setting ea_5, go_5, gs_5 = 100 (to give annual 1 January snapshots)
 *	First we are going to run at pre-industrial (278ppmv) CO2 level, which requires no change to ea_20
-*	However, each person can generate a unique instance of the model by varying key EMBM parameters ea_12 to ea_15. Some suggested reasonable ranges for these parameters are as follows:
+*	However, you can generate a unique instance of the model by varying key EMBM parameters ea_12 to ea_15. Some suggested reasonable ranges for these parameters are as follows:
 **	ea_12 = 1.0e6 to 8.0e6 (default 5.0e6 already quite high)
 **	ea_13 = 1.0e5 to 1.0e7 (default 1e6)
 **	ea_14 = 0.5 to 1.5 (default 1.0 radians)
 **	ea_15 = 0.0 to 0.2 (default 0.1)
 ===Running the model===
 *	Log into a node by using