Errors for unavailable diagnostics

[blimlim]

Certain diagnostics aren't available for some models or with specific namelist settings. E.g. when calc_Tsfc=.false. f_sitemptop can't be calculated and can't be saved. Other variables aren't available when using the UM style coupling for ESM1.6

PR #35 adds error messages for several of these diagnostics:

cice5/source/ice_history.F90

Lines 235 to 242 in eb9583d

	#ifdef ACCESS
	! these are not available with UM style coupling
	if ( f_siflsenstop /= 'x' ) call abort_ice("f_siflsenstop not available, set to 'x'")
	if ( f_sifllwdtop /= 'x' ) call abort_ice("f_sifllwdtop not available, set to 'x'")
	if ( f_sifllwutop /= 'x' ) call abort_ice("f_sifllwutop not available, set to 'x'")
	if ( f_siflswdtop /= 'x' ) call abort_ice("f_siflswdtop not available, set to 'x'")
	if ( f_siflswutop /= 'x' ) call abort_ice("f_siflswutop not available, set to 'x'")
	if ( f_sisnconc /= 'x' ) call abort_ice("f_sisnconc not available, set to 'x'")

The lists might not be exhaustive. E.g. f_flwup_ai, fsens_ai, f_flwdn, f_fswdn, and f_fswup use the same data as some of the above fields, but aren't included in the lists. It could be good to go through the diagnostics and add errors for any additional ones that aren't available.