New cmip5 experiment 7.4 historicalExt

[charlotte]

New experiment xml file required for 7.4 historicalExt

7.4 historicalExt historical extension extension of the historical simulation (experiment 3.2) through year 2012.

[charlotte]

Message from Karl

At the WGCM meeting in Exeter there was agreement that the "historical" runs should be extended from their official ending date at the end of 2006 to about year 2012. The concentrations and land-use changes specified in these runs will not be the same for all groups and may not even be based on true observations (but instead be estimated in various ways). Since these runs should not be confused with the "historical" runs where everyone uses the same forcing (based on observations), the feeling is these short runs (2006-2012) should be labeled as a new experiment. I've sent a message to the modeling groups describing what they should do. You might want to read items 6e and 6f in that message (copied below). To accommodate these new runs, we need to add a line to the second table of Appendix 1.1 of the DRS document with the following entries:

7.4 historicalExt

historical extension

extension of the historical simulation (experiment 3.2) through year 2012.

I understand this will require additions to much of the software, possibly including CMOR2 tables, ESG publisher?, ESG node software?, METAFOR questionnaire, ESG search?, etc.

I apologize for these late changes, but the WGCM thought it important to include these extensions of the historical runs so that detection attribution studies could be done.

Please pass on this message to anyone who might need to know this (beyond those already on the GO-ESSP-tech mail list).

Best regards, Karl

[charlotte]

The 7.4 historicalExt experiment was committed to subversion at revision r2619