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nam_sam.hist.alt_def.ncwrite.ncl
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nam_sam.hist.alt_def.ncwrite.ncl
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load "$diag_scripts/../interface_scripts/interface.ncl"
load "$diag_scripts/shared/plot/mder.ncl"
load "$diag_scripts/ipccwg1ar6ch3_modes/functions.ncl"
begin
enter_msg(DIAG_SCRIPT, "")
syear_a = 1958
eyear_a = 2019
syear_b = 1979
eyear_b = 1999
syear_c = 2000
eyear_c = 2019
if (isatt(diag_script_info, "syear_nam")) then
syear_a := diag_script_info@syear_nam
end if
if (isatt(diag_script_info, "eyear_nam")) then
eyear_a := diag_script_info@eyear_nam
end if
if (isatt(diag_script_info, "syear_sam0")) then
syear_b := diag_script_info@syear_sam0
end if
if (isatt(diag_script_info, "eyear_sam0")) then
eyear_b := diag_script_info@eyear_sam0
end if
if (isatt(diag_script_info, "syear_sam1")) then
syear_c := diag_script_info@syear_sam1
end if
if (isatt(diag_script_info, "eyear_sam1")) then
eyear_c := diag_script_info@eyear_sam1
end if
; Create work directory
out_path = config_user_info@work_dir
system("mkdir -p " + out_path)
var0 = variable_info[0]@short_name
info_items = select_metadata_by_name(input_file_info, var0)
datasetnames = metadata_att_as_array(info_items, "dataset")
dim_MOD = ListCount(info_items)
;--------------------------
; historical-ssp245 datasets
;--------------------------
atts := True
atts@exp = "historical-ssp245"
if (dim_MOD.ne.ListCount(select_metadata_by_atts(info_items, atts))) then
error_msg("f", DIAG_SCRIPT, "", "this diagnostic can only handle historical-ssp245" + \
" experiment")
end if
if (ListCount(info_items) .lt. 1) then
error_msg("f", DIAG_SCRIPT, "", "this diagnostic needs at least one " + \
"run")
end if
seas = "djf"
if (isatt(diag_script_info, "season")) then
seas = diag_script_info@season
end if
seas = str_lower(seas)
;----------------------------------------------------------
pi=4.*atan(1.0)
rad=(pi/180.)
;-------------------------------------------------------------
; NAM/SAM for historical-ssp245 simulations
;-------------------------------------------------------------
;
; lat := nam_patterns_obs&lat
; lat!0 = "lat"
; lat&lat = lat
; w := cos(rad*lat) ; weights for Taylor diagram
; w!0 = "lat"
; w&lat = lat
nens = dim_MOD
model = metadata_att_as_array(info_items, "dataset")
emem = metadata_att_as_array(info_items, "ensemble")
ensemble_assign = new(nens, integer)
enum = 1
temp = model(0)
do gg = 0,nens-1
if (temp.eq.model(gg)) then ; does the model name match what's in temp?
ensemble_assign(gg) = enum ; if so, assign it the same number
else
enum = enum+1 ; if not, assign it the next number
ensemble_assign(gg) = enum
temp = model(gg)
end if
end do
delete(temp)
ensemble_assign@models = str_join(model+"/"+emem,",")
do gg = 0, nens-1
arrF := read_data(info_items[gg])
arrF&time := cd_calendar(arrF&time,-1)
syr_data = arrF&time(0)/100
eyr_data = arrF&time(dimsizes(arrF&time)-1)/100
; if (gg.ge.1.and.isatt(arrF,"is_all_missing")) then ;
; continue
; end if
do hh = 0,2 ; nam, sam, sam
if (hh.eq.0) then
syr = syear_a
eyr = eyear_a
end if
if (hh.ge.1) then
syr = min((/syear_b, syear_c/))
eyr = max((/eyear_b, eyear_c/))
end if
arr := new((/3, eyr-syr+1, dimsizes(arrF&lat), dimsizes(arrF&lon)/), typeof(arrF)) ; (mon, yr, lat, lon)
arr!0 = "month"
arr!1 = "year"
arr!2 = arrF!1
arr!3 = arrF!2
if (seas.eq."djf") then
smo = 0
emo = 2
elseif (seas.eq."jja") then
smo = 6
emo = 8
end if
arr&month = ispan(smo, emo, 1)
arr&year = ispan(syr, eyr, 1)
arr&$arr!2$ = arrF&$arrF!1$
arr&$arr!3$ = arrF&$arrF!2$
do mon = smo, emo
if (mon.lt.1) then
mo = mon + 12
syrF = syr - 1
eyrF = eyr - 1
else
mo = mon
syrF = syr
eyrF = eyr
end if
syrO = syr
eyrO = eyr
if (syrF.lt.syr_data) then
syrO = syr + syr_data - syrF
syrF = syr_data
end if
if (eyrF.gt.eyr_data) then
eyrO = eyr + eyr_data - eyrF
eyrF = eyr_data
end if
arr({mon}, {syrO:eyrO}, :, :) = (/arrF({syrF*100+mo:eyrF*100+mo:12}, :, :)/)
end do
zm := dim_avg_n_Wrap(arr, 3) ; (mon, yr, lat)
zm = dim_standardize_n(zm, 0, 1) ; standardize along "year" dimension for each calendar month
zm_seas := dim_avg_n_Wrap(zm, 0) ; (yr, lat) seasonal mean
arr_seas := dim_avg_n_Wrap(arr, 0) ; (yr, lat, lon) seasonal mean
delete([/arr, zm/])
if (hh.eq.0) then ; NAM
finarr_nam_pc := zm_seas({syear_a:eyear_a}, {35}) - zm_seas({syear_a:eyear_a}, {65})
finarr_nam := regCoef_n(dim_standardize(finarr_nam_pc, 0),arr_seas({syear_a:eyear_a}, :, :),0,0)
copy_VarMeta(arr_seas(0,:,:),finarr_nam)
end if
if (hh.eq.1) then ; SAM
finarr_sam_pc0 := zm_seas({syear_b:eyear_b}, {-40}) - zm_seas({syear_b:eyear_b}, {-65})
finarr_sam0 := regCoef_n(dim_standardize(finarr_sam_pc0, 0),arr_seas({syear_b:eyear_b}, :, :),0,0)
copy_VarMeta(arr_seas(0,:,:),finarr_sam0)
end if
if (hh.eq.2) then ; SAM
finarr_sam_pc1 := zm_seas({syear_c:eyear_c}, {-40}) - zm_seas({syear_c:eyear_c}, {-65})
finarr_sam1 := regCoef_n(dim_standardize(finarr_sam_pc1, 0),arr_seas({syear_c:eyear_c}, :, :),0,0)
copy_VarMeta(arr_seas(0,:,:),finarr_sam1)
end if
end do
delete(arrF)
if (gg.eq.0) then
nam_patterns := new((/nens,dimsizes(finarr_nam&lat),dimsizes(finarr_nam&lon)/),typeof(finarr_nam))
nam_patterns!0 = "E"
nam_patterns&E = ispan(0, nens-1,1)
nam_patterns!1 = "lat"
nam_patterns&lat = finarr_nam&lat
nam_patterns!2 = "lon"
nam_patterns&lon = finarr_nam&lon
nam_patterns = nam_patterns@_FillValue
sam_patterns0 := nam_patterns
sam_patterns1 := nam_patterns
nam_timeseries := new((/nens,dimsizes(finarr_nam_pc)/),float)
nam_timeseries!0 = "E"
nam_timeseries&E = nam_patterns&E
nam_timeseries!1 = "time"
nam_timeseries&time = ispan(syear_a,eyear_a,1)
nam_timeseries = nam_timeseries@_FillValue
sam_timeseries0 := new((/nens,dimsizes(finarr_sam_pc0)/),float)
sam_timeseries0!0 = "E"
sam_timeseries0&E = sam_patterns0&E
sam_timeseries0!1 = "time2"
sam_timeseries0&time2 = ispan(syear_b,eyear_b,1)
sam_timeseries0 = sam_timeseries0@_FillValue
sam_timeseries1 := new((/nens,dimsizes(finarr_sam_pc1)/),float)
sam_timeseries1!0 = "E"
sam_timeseries1&E = sam_patterns1&E
sam_timeseries1!1 = "time3"
sam_timeseries1&time3 = ispan(syear_c,eyear_c,1)
sam_timeseries1 = sam_timeseries1@_FillValue
nam_pc_trends := nam_timeseries(:,0)
sam_pc_trends0 := nam_timeseries(:,0)
sam_pc_trends1 := nam_timeseries(:,0)
ensemble_assign!0 = "E"
ensemble_assign&E = nam_timeseries&E
end if
; nam_patterns(gg,:,:) = (/ linint2_Wrap(finarr_nam&lon,finarr_nam&lat,finarr_nam,True,nam_patterns&lon,nam_patterns&lat,0) /)
nam_patterns(gg,:,:) = (/ finarr_nam /)
; sam_patterns0(gg,:,:) = (/ linint2_Wrap(finarr_sam0&lon,finarr_sam0&lat,finarr_sam0,True,sam_patterns0&lon,sam_patterns0&lat,0) /)
sam_patterns0(gg,:,:) = (/ finarr_sam0 /)
; sam_patterns1(gg,:,:) = (/ linint2_Wrap(finarr_sam1&lon,finarr_sam1&lat,finarr_sam1,True,sam_patterns1&lon,sam_patterns1&lat,0) /)
sam_patterns1(gg,:,:) = (/ finarr_sam1 /)
tttt := dtrend_msg_n(ispan(0,dimsizes(finarr_nam_pc)-1,1),finarr_nam_pc,False,True,0)
nam_pc_trends(gg) = (/ tttt@slope*dimsizes(finarr_nam_pc) /)
tttt := dtrend_msg_n(ispan(0,dimsizes(finarr_sam_pc0)-1,1),finarr_sam_pc0,False,True,0)
sam_pc_trends0(gg) = (/ tttt@slope*dimsizes(finarr_sam_pc0) /)
tttt := dtrend_msg_n(ispan(0,dimsizes(finarr_sam_pc1)-1,1),finarr_sam_pc1,False,True,0)
sam_pc_trends1(gg) = (/ tttt@slope*dimsizes(finarr_sam_pc1) /)
nam_timeseries(gg,:) = (/ finarr_nam_pc /)
sam_timeseries0(gg,:) = (/ finarr_sam_pc0 /)
sam_timeseries1(gg,:) = (/ finarr_sam_pc1 /)
print("Done with "+gg+" out of "+nens)
end do
fn = out_path + "nam_sam.alt_def.hist."+seas+".nc"
system("rm -f " + fn)
z = addfile(fn,"c")
z@source = systemfunc("pwd")+"/"+get_script_name()
z->ensemble_assign = ensemble_assign
z->nam_patterns = nam_patterns
z->sam_patterns0 = sam_patterns0
z->sam_patterns1 = sam_patterns1
z->nam_timeseries = nam_timeseries
z->sam_timeseries0 = sam_timeseries0
z->sam_timeseries1 = sam_timeseries1
z->nam_trends = nam_pc_trends
z->sam_trends0 = sam_pc_trends0
z->sam_trends1 = sam_pc_trends1
delete(z)
log_provenance(fn, "n/a", \
"Patterns, time series & trends of NAM/SAM defined with the latitudinal SLP difference in CMIP6 historical", \
(/"anomaly", "var", "trend"/), (/"nhext", "shext"/), "other", "kosaka_yu", "", \
metadata_att_as_array(info_items, "filename"))
end