Source of SST dataset for CAM5 F-compset simulations?

[fyke@lanl_gov]

Hi there,

I'm wondering if someone in the CAM community could tell me what the citable source is for this climatological SST boundary condition data?

/glade/p/cesm/cseg/inputdata/atm/cam/sst/sst_HadOIBl_bc_1x1_clim_pi_c101029.nc

It is used as the boundary condition for F-compset simulations using CAM5, using this CESM tag: cesm1_2_beta06

I suspect it is derived from HadSST2, but I cannot seem to verify this...

Thanks for any help!

Jeremy Fyke (505-606-0025)

 

[hannay]

The SST are derived from the Merged Hadley-NOAA/OI Sea Surface Temperature & Sea-Ice Concentration (Hurrell et al, 2008)https://climatedataguide.ucar.edu/climate-data/merged-hadley-noaaoi-sea-surface-temperature-sea-ice-concentration-hurrell-et-al-2008
The dataset includes the "diddling" procedure that ensures that the monthly mean of the daily-interpolated SST anomalies matches the monthly SST anomalies. This follows the protocol for AMIP simulation described in: Taylor, K.E., D. Williamson, and F. Zwiers (2000): The sea surface temperature and sea-ice concentration boundary conditions for AMIP II simulations. PCMDI Report No. 60 and UCRL-MI-125597, Lawrence Livermore National Laboratory, Livermore, CA, 25 pp.pdf file available at  http://www-pcmdi.llnl.gov/publications/pdf/60.pdf    

 

[hannay]

Also, I want to make it clear this specific dataset is an average for preindustrial SST data.

 

[fyke@lanl_gov]

Thanks!  This is great info.  I appreciate that it is preindustrial SST data.Jeremy

 

[liess@umn_edu]

Hi,I have some follow-up questions or more generally would like to know if there is a README file about the climatological input files. My specific questions are: 1. the http://www-pcmdi.llnl.gov/publications/pdf/60.pdf report mentions climatological SSTs being derived from data between December of 1978 and March of 1996. Is this still true for newer files in the repository such as sst_HadOIBl_bc_0.9x1.25_clim_c040926.nc? 2. What's the difference between sst_HadOIBl_bc_0.9x1.25_clim_c040926.nc and sst_HadOIBl_bc_0.9x1.25_clim_c040926a.nc? 3. Are there also specific years being used for the preindustrial SSTs such as sst_HadOIBl_bc_0.9x1.25_clim_pi_c101028.nc?
Thanks in advance for any clarification!Stefan

 

[hannay]

Climos year:1) sst_HadOIBl_bc_0.9x1.25_clim_c040926.nc 
This climo was computed over the years: 1982-20012) sst_HadOIBl_bc_0.9x1.25_clim_pi_c101028.ncThis climo was computed over the years: 1870-1899See also: http://bb.cgd.ucar.edu/any-one-know-what-years-are-used-create-hurrell-sst-climatology-file============ About the difference between sst_HadOIBl_bc_0.9x1.25_clim_c040926.nc and sst_HadOIBl_bc_0.9x1.25_clim_c040926a.nc.I lloked at the files. They are basically identical except the sst_HadOIBl_bc_0.9x1.25_clim_c040926a.nc has the attribute "calendar". for the variable "time":        double time(time) ;                time:units = "days since 0000-01-01 00:00:00" ;                time:calendar = "365_day" ;  

 

[liess@umn_edu]

Thanks for the detailed information!