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hwy_ncl_package.ncl
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undef("create_areawgt_latlon_Wrap")
function create_areawgt_latlon_Wrap(lat:numeric,lon:numeric)
begin
print("--------------------------------------------------")
print("Welcome to hwy_ncl_package")
print("You are creating the area weights ...")
dlon = abs(lon(1) - lon(0))
dlat = abs(lat(1) - lat(0))
num_lon = dimsizes(lon)
num_lat = dimsizes(lat)
area_wgt = new((/num_lat,num_lon/),float)
dx = new(num_lat,float)
dy = new(num_lat,float)
re = 6.371e6
rad = 4.0*atan(1.0)/180.0
do j = 1-1, num_lat-1
dx(j) = doubletofloat(re*cos(lat(j)*rad)*dlon*rad)
dy(j) = doubletofloat(re*abs(dlat)*rad)
end do
do j = 1-1, num_lat-1
do i = 1-1, num_lon-1
area_wgt(j,i) = dx(j)*dy(j)
end do
end do
area_wgt!0 = "lat"
area_wgt!1 = "lon"
area_wgt&lat = lat
area_wgt&lon = lon
print("Minimum of the area weights: "+min(area_wgt))
print("Total area: "+sum(area_wgt))
if (min(area_wgt) .lt. 0.0 .or. abs(sum(area_wgt) -5.1e14) .gt. 0.01*5.1e14) then
print("error in the area weights")
return(area_wgt)
end if
print("Create the area weights successfully!")
print("--------------------------------------------------")
return(area_wgt)
end
undef("create_areawgt_var_Wrap")
function create_areawgt_var_Wrap(var:numeric)
begin
print("--------------------------------------------------")
print("Welcome to hwy_ncl_package")
print("You are creating the area weights ...")
lon = var&lon
lat = var&lat
dlon = abs(lon(1) - lon(0))
dlat = abs(lat(1) - lat(0))
num_lon = dimsizes(lon)
num_lat = dimsizes(lat)
area_wgt = new((/num_lat,num_lon/),float)
dx = new(num_lat,float)
dy = new(num_lat,float)
re = 6.371e6
rad = 4.0*atan(1.0)/180.0
do j = 1-1, num_lat-1
dx(j) = doubletofloat(re*cos(lat(j)*rad)*dlon*rad)
dy(j) = doubletofloat(re*abs(dlat)*rad)
end do
do j = 1-1, num_lat-1
do i = 1-1, num_lon-1
area_wgt(j,i) = dx(j)*dy(j)
end do
end do
area_wgt!0 = "lat"
area_wgt!1 = "lon"
area_wgt&lat = lat
area_wgt&lon = lon
print("Minimum of the area weights: "+min(area_wgt))
print("Total area: "+sum(area_wgt))
if (min(area_wgt) .lt. 0.0 .or. abs(sum(area_wgt) -5.1e14) .gt. 0.01*5.1e14) then
print("error in the area weights")
return(area_wgt)
end if
print("Create the area weights successfully!")
print("--------------------------------------------------")
return(area_wgt)
end
undef("create_areawgt_latlon_bnds_Wrap")
function create_areawgt_latlon_bnds_Wrap(lat:numeric,lon:numeric,lat_bnds:numeric,lon_bnds:numeric)
begin
print("--------------------------------------------------")
print("Welcome to hwy_ncl_package")
print("You are creating the area weights ...")
num_lon = dimsizes(lon)
num_lat = dimsizes(lat)
dlat = lat
do j = 0, num_lat-1
dlat(j) = abs(lat_bnds(j,0)-lat_bnds(j,1))
end do
dlon = abs(lon_bnds(0,0)-lon_bnds(0,1))
area_wgt = new((/num_lat,num_lon/),float)
dx = new(num_lat,float)
dy = new(num_lat,float)
re = 6.371e6
rad = 4.0*atan(1.0)/180.0
do j = 1-1, num_lat-1
dx(j) = doubletofloat(re*cos(lat(j)*rad)*dlon*rad)
dy(j) = doubletofloat(re*abs(dlat(j))*rad)
end do
do j = 1-1, num_lat-1
do i = 1-1, num_lon-1
area_wgt(j,i) = dx(j)*dy(j)
end do
end do
area_wgt!0 = "lat"
area_wgt!1 = "lon"
area_wgt&lat = lat
area_wgt&lon = lon
print("Minimum of the area weights: "+min(area_wgt))
print("Total area: "+sum(area_wgt))
if (min(area_wgt) .lt. 0.0 .or. abs(sum(area_wgt) -5.1e14) .gt. 0.01*5.1e14) then
print("error in the area weights")
return(area_wgt)
end if
print("Create the area weights successfully!")
print("--------------------------------------------------")
return(area_wgt)
end
undef("create_areawgt_latlon_center_Wrap")
function create_areawgt_latlon_center_Wrap(lat:numeric,lon:numeric)
begin
print("--------------------------------------------------")
print("Welcome to hwy_ncl_package")
print("You are creating the area weights ...")
dlon = abs(lon(1) - lon(0))
num_lon = dimsizes(lon)
num_lat = dimsizes(lat)
area_wgt = new((/num_lat,num_lon/),float)
dlat = lat
dlat(0) = abs(lat(0)-lat(1))
bnds_point = (lat(0)+lat(1))/2.0
do j = 1, num_lat-1
bnds_point_new = 2.0*lat(j) - bnds_point
dlat(j) = abs(bnds_point_new-bnds_point)
bnds_point = bnds_point_new
end do
dx = new(num_lat,float)
dy = new(num_lat,float)
re = 6.371e6
rad = 4.0*atan(1.0)/180.0
do j = 1-1, num_lat-1
dx(j) = doubletofloat(re*cos(lat(j)*rad)*dlon*rad)
dy(j) = doubletofloat(re*abs(dlat(j))*rad)
end do
do j = 1-1, num_lat-1
do i = 1-1, num_lon-1
area_wgt(j,i) = dx(j)*dy(j)
end do
end do
area_wgt!0 = "lat"
area_wgt!1 = "lon"
area_wgt&lat = lat
area_wgt&lon = lon
print("Minimum of the area weights: "+min(area_wgt))
print("Total area: "+sum(area_wgt))
if (min(area_wgt) .lt. 0.0 .or. abs(sum(area_wgt) -5.1e14) .gt. 0.01*5.1e14) then
print("error in the area weights")
return(area_wgt)
end if
print("Create the area weights successfully!")
print("--------------------------------------------------")
return(area_wgt)
end
undef("create_areawgt_var_center_Wrap")
function create_areawgt_var_center_Wrap(var:numeric)
begin
print("--------------------------------------------------")
print("Welcome to hwy_ncl_package")
print("You are creating the area weights ...")
lat = var&lat
lon = var&lon
dlon = abs(lon(1) - lon(0))
num_lon = dimsizes(lon)
num_lat = dimsizes(lat)
area_wgt = new((/num_lat,num_lon/),float)
dlat = lat
dlat(0) = abs(lat(0)-lat(1))
bnds_point = (lat(0)+lat(1))/2.0
do j = 1, num_lat-1
bnds_point_new = 2.0*lat(j) - bnds_point
dlat(j) = abs(bnds_point_new-bnds_point)
bnds_point = bnds_point_new
end do
dx = new(num_lat,float)
dy = new(num_lat,float)
re = 6.371e6
rad = 4.0*atan(1.0)/180.0
do j = 1-1, num_lat-1
dx(j) = doubletofloat(re*cos(lat(j)*rad)*dlon*rad)
dy(j) = doubletofloat(re*abs(dlat(j))*rad)
end do
do j = 1-1, num_lat-1
do i = 1-1, num_lon-1
area_wgt(j,i) = dx(j)*dy(j)
end do
end do
area_wgt!0 = "lat"
area_wgt!1 = "lon"
area_wgt&lat = lat
area_wgt&lon = lon
print("Minimum of the area weights: "+min(area_wgt))
print("Total area: "+sum(area_wgt))
if (min(area_wgt) .lt. 0.0 .or. abs(sum(area_wgt) -5.1e14) .gt. 0.01*5.1e14) then
print("error in the area weights")
return(area_wgt)
end if
print("Create the area weights successfully!")
print("--------------------------------------------------")
return(area_wgt)
end