Routines for creating Gaussian-shaped land surface topography for latitude-longitude grids. More...

Data Types
interface	get_gaussian_topog

Functions/Subroutines
subroutine	gaussian_topog_init_ (lon, lat, zsurf)
	Returns a simple surface height field that consists of a single Gaussian-shaped mountain. More...

	gaussian_topog_init_r4

	gaussian_topog_init_r8

real(kind=fms_top_kind_) function, dimension(size(lon, 1), size(lat, 1))	get_gaussian_topog_ (lon, lat, height, olond, olatd, wlond, wlatd, rlond, rlatd)
	The height, position, width, and elongation of the mountain is controlled by optional arguments. More...

	get_gaussian_topog_r4

	get_gaussian_topog_r8

subroutine	read_namelist

Variables
logical	do_nml = .true.

real(kind=r8_kind), dimension(maxmts)	height = 0.0_r8_kind
	height in meters of the gaussian mountiains

integer, parameter	maxmts = 10

logical	module_is_initialized = .FALSE.

real(kind=r8_kind), dimension(maxmts)	olat = 0.0_r8_kind
	Latitude of mountain origins (degrees)

real(kind=r8_kind), dimension(maxmts)	olon = 0.0_r8_kind
	longitude of mountain origins (degrees)

real(kind=r8_kind), dimension(maxmts)	rlat = 0.0_r8_kind
	Latitude of half-width mountain ridges (degrees) for "standard" gaussian mountain set, rlon/rlat = 0.

real(kind=r8_kind), dimension(maxmts)	rlon = 0.0_r8_kind
	Longitude of half-width mountain ridges (degrees) for "standard" gaussian mountain set, rlon/rlat = 0.

real(kind=r8_kind), dimension(maxmts)	wlat = 0.0_r8_kind
	Latitude of half-width mountain trails (degrees)

real(kind=r8_kind), dimension(maxmts)	wlon = 0.0_r8_kind
	Longitude of half-width mountain trails (degrees)

Detailed Description

Routines for creating Gaussian-shaped land surface topography for latitude-longitude grids.

Author: Bruce Wyman

Interfaces generate simple Gaussian-shaped mountains from parameters specified by either argument list or namelist input. The mountain shapes are controlled by the height, half-width, and ridge-width parameters.

Data Type Documentation

◆ gaussian_topog_mod::get_gaussian_topog

interface gaussian_topog_mod::get_gaussian_topog

Definition at line 54 of file gaussian_topog.F90.

Private Member Functions
	get_gaussian_topog_r4

	get_gaussian_topog_r8

Function/Subroutine Documentation

◆ gaussian_topog_init_()

subroutine gaussian_topog_init_	(	real(kind=fms_top_kind_), dimension(:), intent(in)	lon,
		real(kind=fms_top_kind_), dimension(:), intent(in)	lat,
		real(kind=fms_top_kind_), dimension(:,:), intent(out)	zsurf
	)

Returns a simple surface height field that consists of a single Gaussian-shaped mountain.

Returns a surface height field that consists of the sum of one or more Gaussian-shaped mountains.

Parameters

[in]	lon	The mean grid box longitude in radians
[in]	lat	The mean grid box latitude in radians
[out]	zsurf	The surface height (meters). Size must be size(lon) by size(lat)

Definition at line 40 of file gaussian_topog.inc.

◆ get_gaussian_topog_()

real(kind=fms_top_kind_) function, dimension(size(lon,1),size(lat,1)) get_gaussian_topog_	(	real(kind=fms_top_kind_), dimension(:), intent(in)	lon,
		real(kind=fms_top_kind_), dimension(:), intent(in)	lat,
		real(kind=fms_top_kind_), intent(in)	height,
		real(kind=fms_top_kind_), intent(in), optional	olond,
		real(kind=fms_top_kind_), intent(in), optional	olatd,
		real(kind=fms_top_kind_), intent(in), optional	wlond,
		real(kind=fms_top_kind_), intent(in), optional	wlatd,
		real(kind=fms_top_kind_), intent(in), optional	rlond,
		real(kind=fms_top_kind_), intent(in), optional	rlatd
	)

The height, position, width, and elongation of the mountain is controlled by optional arguments.

Parameters

real	lon The mean grid box longitude in radians.
real	lat The mean grid box latitude in radians.
real	height Maximum surface height in meters.
real	olond, olatd Position/origin of mountain in degrees longitude and latitude. This is the location of the maximum height.
real	wlond, wlatd Gaussian half-width of mountain in degrees longitude and latitude.
real	rlond, rlatd Ridge half-width of mountain in degrees longitude and latitude. This is the elongation of the maximum height.
real	zsurf The surface height (in meters). The size of the returned field is size(lon) by size(lat). </OUT>

Exceptions

FATAL shape(zsurf) is not equal to (/size(lon),size(lat)/) Check the input grid size and output field size. The input grid is defined at the midpoint of grid boxes.

Note: Mountains do not wrap around the poles. Returns a land surface topography that consists of a "set" of simple Gaussian-shaped mountains. The height, position, width, and elongation of the mountains can be controlled by variables in the namelist.

Definition at line 100 of file gaussian_topog.inc.

◆ read_namelist()

subroutine gaussian_topog_mod::read_namelist

private

read namelist

write version and namelist to log file

Definition at line 124 of file gaussian_topog.F90.

Data Types

Functions/Subroutines

Variables