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regrid.ncl
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regrid.ncl
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;###############
; test
;;;;;;;;;;;e
;;;;$$$$ ; functions ;;;
;;;# isodd ; checks the whether the given num is odd
;;;# iseven ; checks the whether the given num is even
;;;# remapTLL ; regridding with linear intepolation
;;;# maskingTLL ; masking with ref data
;;;# remap_maskingTLL ;both remap and masking
;;;# remapLL ; regridding along lat and lon
;;;# maksingLL ; masking along lat and lon
;;;# acctodaily ; accumulated rainfall into daily rainfall
;;;# todaily ; converts 3hly to daily
;;;# bias ; bias of the given variables
;;;# Percentile ; percentile quartile
;;;# hhtodaily ; HHly to Dly
;;;;$$$$ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;
; function isodd
; Doc self Discriptive.
; argument should be integer
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
undef("isodd")
function isodd(number:integer)
begin
if ( number %2 .ne. 0) then
return(True)
else
return(False)
end if
end
;;=======================================================
;;;;;;;;;;;;;;;;;;;;;;
; Function iseven
;argument should be integer
;;;;;;;;;;;;;;;;;;;;;
undef("iseven")
function iseven(number:integer)
begin
return(.not.isodd(number))
end
;;=======================================================
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Function remapTLL
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
undef("remapTLL")
function remapTLL(x[*][*][*]:numeric,y[*][*][*]:numeric)
local dims,ntime,nlat,nlon,dim_Names,newtime,newlat,newlon,dim_Names1,ui,uj,xo
begin
;;;;variable to;;;;;;;
dims = dimsizes(x)
ntime= dims(0)
nlat = dims(1)
nlon = dims(2)
dim_Names=getvardims(x)
newtime = ispan(0,ntime-1,1)
newlat=fspan(min(x&$dim_Names(1)$),max(x&$dim_Names(1)$),nlat)
newlon=fspan(min(x&$dim_Names(2)$),max(x&$dim_Names(2)$),nlon)
;;;;;Variable from;;;;;;;
dim_Names1=getvardims(y)
ui=y&$dim_Names1(1)$ ;;lat
uj=y&$dim_Names1(2)$ ;;lon
xo=linint2(uj,ui,y,True,newlon,newlat,-999)
copy_VarAtts(x,xo)
copy_VarCoords(x,xo)
return(xo)
end
;;;;;;;;;;;;;;;;;;;;
;;Function maskingTLL
;;;;;;;;;;;;;;;;;;;;
undef("maskingTLL")
function maskingTLL(x[*][*][*]:numeric,y[*][*][*]:numeric)
local yo
begin
print(";;;;;;; note : dimensions should be same size")
yo=where(.not.ismissing(x),y,x@_FillValue)
copy_VarAtts(x,yo)
copy_VarCoords(x,yo)
return(yo)
end
;;;;;;;;;;;;;;;;;
;;Function remap_masking
;;;;;;;;;;;;;;;;
undef("remap_maskingLL")
function remap_maskingLL(x[*][*]:numeric,y[*][*]:numeric)
local dims,ntime,nlat,nlon,dim_Names,newtime,newlat,newlon,dim_Names1,ui,uj,xo,yo
begin
;;;;variable to;;;;;;;
dims = dimsizes(x)
nlat = dims(0)
nlon = dims(1)
dim_Names=getvardims(x)
newlat=fspan(min(x&$dim_Names(0)$),max(x&$dim_Names(0)$),nlat)
newlon=fspan(min(x&$dim_Names(1)$),max(x&$dim_Names(1)$),nlon)
;;;;;Variable from;;;;;;;
dim_Names1=getvardims(y)
ui=y&$dim_Names1(0)$ ;;lat
uj=y&$dim_Names1(1)$ ;;lon
xo=linint2(uj,ui,y,True,newlon,newlat,-999)
copy_VarAtts(x,xo)
copy_VarCoords(x,xo)
yo=where(.not.ismissing(x),xo,x@_FillValue)
copy_VarAtts(x,yo)
copy_VarCoords(x,yo)
return(yo)
end
;;;;;;;;;;;;;;;;;
;;Function remap_masking
;;;;;;;;;;;;;;;;
undef("remap_maskingTLL")
function remap_maskingTLL(x[*][*][*]:numeric,y[*][*][*]:numeric)
local dims,ntime,nlat,nlon,dim_Names,newtime,newlat,newlon,dim_Names1,ui,uj,xo,yo
begin
;;;;variable to;;;;;;;
dims = dimsizes(x)
ntime= dims(0)
nlat = dims(1)
nlon = dims(2)
dim_Names=getvardims(x)
newtime = ispan(0,ntime-1,1)
newlat=fspan(min(x&$dim_Names(1)$),max(x&$dim_Names(1)$),nlat)
newlon=fspan(min(x&$dim_Names(2)$),max(x&$dim_Names(2)$),nlon)
;;;;;Variable from;;;;;;;
dim_Names1=getvardims(y)
ui=y&$dim_Names1(1)$ ;;lat
uj=y&$dim_Names1(2)$ ;;lon
xo=linint2(uj,ui,y,True,newlon,newlat,-999)
copy_VarAtts(x,xo)
copy_VarCoords(x,xo)
yo=where(.not.ismissing(x),xo,x@_FillValue)
copy_VarAtts(x,yo)
copy_VarCoords(x,yo)
return(yo)
end
;;;;;;;;;;;;;;;;;;;;;;
;;remapLL
;;;;;;;;;;;;;;;;;;;;
undef("remapLL")
function remapLL(x[*][*]:numeric,y[*][*]:numeric)
local dims,nlat,nlon,dim_Names,newlat,newlon,dim_Names1,ui,uj,xo
begin
;;;;variable to;;;;;;;
dims = dimsizes(x)
nlat = dims(0)
nlon = dims(1)
dim_Names=getvardims(x)
newlat=fspan(min(x&$dim_Names(0)$),max(x&$dim_Names(0)$),nlat)
newlon=fspan(min(x&$dim_Names(1)$),max(x&$dim_Names(1)$),nlon)
;;;;;Variable from;;;;;;;
dim_Names1=getvardims(y)
ui=y&$dim_Names1(0)$ ;;lat
uj=y&$dim_Names1(1)$ ;;lon
xo=linint2(uj,ui,y,True,newlon,newlat,-999)
copy_VarAtts(x,xo)
copy_VarCoords(x,xo)
return(xo)
end
;;;;;;;;;;;;;;;;;;;;
;;Function maskingLL
;;;;;;;;;;;;;;;;;;;;
undef("maskingLL")
function maskingLL(x[*][*]:numeric,y[*][*]:numeric)
local yo
begin
print(";;;;;;; note : dimensions should be same size")
yo=where(.not.ismissing(x),y,-999)
copy_VarAtts(x,yo)
copy_VarCoords(x,yo)
return(yo)
end
;;;;;;;;;;;;;;;;;;;
;;;Function read
;;;;;;;;;;;;;;;;;;;
undef("readnc")
function readnc(x:string)
local a
begin
a = addfile(x,"r")
; print(getfilevarnames(a))
return(a)
end
;;;;;;;;;;;;;;;;;;;;;;
;;;
;;;;;;;;;;;;;;;;;;;;;;
undef("prate")
function prate(x[*][*][*]:numeric)
local dims,ntime,ntJump
begin
dims = dimsizes(x)
ntime = dims(0)
ntJump = 8 ; 3-hrly values
;;;;;;;;;;;;;;;;;
y=x(:,:,:) ;;defining rf variable
;;;;;;;calculating preciptation_rate ;;;;;;;;;
do i=1,ntime-1
y(i,:,:)=x(i,:,:) - x(i-1,:,:)
end do
return(y)
end
; ;;;;;;;;;;;;;;;;;;
; ;; Function 3htlytodaily
; ;;;;;;;;;;;;;;;;;;
undef("acctodaily")
function acctodaily(x[*][*][*]:numeric)
local dims,ntime,nlat,nlon,ntJump,rf_daily,ntStrt,ntLast,nt
begin
dims = dimsizes(x)
ntime = dims(0)
nlat = dims(1)
nlon = dims(2)
ntJump = 8 ; 3-hrly values
;;;;;;;;;;;;;;;;;
y=x(:,:,:) ;;defining rf variable
;;;;;;;calculating preciptation_rate ;;;;;;;;;
do i=1,ntime-1
y(i,:,:)=x(i,:,:) - x(i-1,:,:)
end do
;;;;;;;;;;; converting to daily;;;;;;;;;;;;;;
rf_daily = y(:ntime-2:ntJump,:,:) ;; defining rf_daily variable
ntStrt = 0
ntLast = ntJump-1
do nt=0,ntime-2,ntJump
rf_daily(nt/ntJump,:,:) = (/ dim_sum_n(y(ntStrt:ntLast,:,:), 0) /)
ntStrt = ntStrt+ntJump
ntLast = ntLast+ntJump
end do
return(rf_daily)
end
; ;;;;;;;;;;;;;;;;;;
; ;; Function 3htlytodaily
; ;;;;;;;;;;;;;;;;;;
undef("todaily")
function todaily(x[*][*][*]:numeric)
local dims,ntime,nlat,nlon,ntJump,rf_daily,ntStrt,ntLast,nt
begin
dims = dimsizes(x)
ntime = dims(0)
nlat = dims(1)
nlon = dims(2)
ntJump = 8 ; 3-hrly values
;;;;;;;;;;;;;;;;;
;;;;;;;;;;; converting to daily;;;;;;;;;;;;;;
rf_daily = x(:ntime-2:ntJump,:,:) ;; defining rf_daily variable
ntStrt = 0
ntLast = ntJump-1
do nt=0,ntime-2,ntJump
rf_daily(nt/ntJump,:,:) = (/ dim_sum_n(x(ntStrt:ntLast,:,:), 0) /)*3
ntStrt = ntStrt+ntJump
ntLast = ntLast+ntJump
end do
return(rf_daily)
end
; ;;;;;;;;;;;;;;;;;;
; ;; Function 3htlytodaily
; ;;;;;;;;;;;;;;;;;;
undef("todailyTLLL")
function todailyTLLL(x[*][*][*][*]:numeric)
local dims,ntime,nlevel,nlat,nlon,ntJump,daily,ntStrt,ntLast,nt
begin
dims = dimsizes(x)
ntime = dims(0)
nlevel= dims(1)
nlat = dims(2)
nlon = dims(3)
ntJump = 8 ; 3-hrly values
;;;;;;;;;;;;;;;;;
;;;;;;;;;;; converting to daily;;;;;;;;;;;;;;
daily = x(:ntime-2:ntJump,:,:,:) ;; defining rf_daily variable
ntStrt = 0
ntLast = ntJump-1
do nt=0,ntime-2,ntJump
daily(nt/ntJump,:,:,:) = (/ dim_sum_n(x(ntStrt:ntLast,:,:,:), 0) /)*3
ntStrt = ntStrt+ntJump
ntLast = ntLast+ntJump
end do
return(daily)
end
;;;;;;;;;;;;;;;;;;;;;;
;;; bias
;;;;;;;;;;;;;;;;;;;;;;
undef("bias")
function bias(x[*][*]:numeric,y[*][*]:numeric)
local c
begin
c= x-y
copy_VarAtts(x,c)
copy_VarCoords(x,c)
return(c)
end
;;;;;;;;;;;
;;;Percentile
;;;;;;;;;;;
undef("Percentile")
function Percentile(x:numeric,P:float)
begin
if(P.gt.0) then
P = P/100.
end if
x@_FillValue = default_fillvalue(typeof(x))
; print("Rain rates for project greater than 0 and less than 1000...")
x = where((x.gt.0 .and. x.lt.1000),x,x@_FillValue)
index = round(P*dimsizes(x),3)
; print("Index of percentile: "+index+ " of size: "+dimsizes(x))
ib = dim_pqsort(x,2)
; print("The "+P*100+" percentile: "+x(index))
return(x(index))
end
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; WRF functions ;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;
undef("wrfdaily")
function wrfdaily(nc_file) ;;;;;;;;;;;;;;;;;;;;;;
local times,rain_exp,rain_con,rain,rf,rf_daily
begin
times = wrf_user_getvar(nc_file,"times",-1)
rain_exp = wrf_user_getvar(nc_file,"RAINNC",-1)
rain_con = wrf_user_getvar(nc_file,"RAINC",-1)
rain= rain_exp + rain_con
rain@description = "Precipitation(mm/h)"
rf=prate(rain)
copy_VarCoords(rain_exp,rf)
rf&Time = wrf_times_c(nc_file->Times, 0) ; convert to "hours since"
rf_daily=calculate_daily_values(rf,"sum",0,False)
rf_daily@description = "Precipitation(mm/day)"
return(rf_daily)
end
;;;;;;;;;;;;;;;
undef("wrfprate")
function wrfprate(nc_file) ;;;;;;;;;;;;;;;;;;;;;;
local times,rain_exp,rain_con,rain,rf,rf_daily
begin
times = wrf_user_getvar(nc_file,"times",-1)
rain_exp = wrf_user_getvar(nc_file,"RAINNC",-1)
rain_con = wrf_user_getvar(nc_file,"RAINC",-1)
rain= rain_exp + rain_con
rain@description = "Precipitation(mm/h)"
rf=prate(rain)
copy_VarCoords(rain_exp,rf)
rf&Time = wrf_times_c(nc_file->Times, 0) ; convert to "hours since"
return(rf)
end
;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;
;;getind_latlon1d
;;;;;;;;;;;;;;;;;;;;
; undef("getind_latlon1d")
; function getind_latlon1d(lat1d[*]:numeric,lon1d[*]:numeric \
; ,LAT[*]:numeric, LON[*]:numeric)
; local N, ij, dist, mndist, indx, nLon, nLat, xx
; begin
; N = dimsizes( LAT )
; ij = new ( (/N,2/) , typeof(N))
; nLat =dimsizes(lat1d)
; nLon =dimsizes(lon1d)
; xx= new((/nLat,nLon/),typeof(N))
; n2d = dimsizes( xx )
; do n=0,N-1
; dist = gc_latlon(LAT(n),LON(n),lat1d(n),lon1d(n), 2,2)
; mndist = min( dist )
; ind1d = ind(dist.eq.mndist)
; if (.not.ismissing(ind1d(0))) then
; ij(n,:) = ind_resolve( ind1d(0), n2d )
; else
; print("getind_latlon2d: lat="+ LAT(n)+" lon="+ LON(n)+" problem")
; end if
; delete(mndist)
; delete(ind1d)
; end do
; ij@long_name = "indices closest to specified LAT/LON coordinate pairs"
; if (.not.any(ismissing(ij))) then
; delete(ij@_FillValue)
; end if
; return( ij )
; end
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; ;;;;;;;;;;;;;;;;;;
; ;; Function MMphtoMMpd
; ;;;;;;;;;;;;;;;;;;
; function MMphtoMMpd(x[*][*][*]:numeric,y[*][*][*]:numeric,njump:integer)
; ;;;;variable to;;;;;;;
; dims = dimsizes(x)
; ntime= dims(0)
; nlat = dims(1)
; nlon = dims(2)
; rf_daily=