Routines for creating Gaussian-shaped land surface topography for latitude-longitude grids.
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| subroutine | gaussian_topog_init_ (lon, lat, zsurf) |
| | Returns a simple surface height field that consists of a single Gaussian-shaped mountain.
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| gaussian_topog_init_r4 |
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| gaussian_topog_init_r8 |
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| 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.
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| get_gaussian_topog_r4 |
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| get_gaussian_topog_r8 |
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| subroutine | read_namelist |
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| logical | do_nml = .true. |
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| real(kind=r8_kind), dimension(maxmts) | height = 0.0_r8_kind |
| | height in meters of the gaussian mountiains
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| integer, parameter | maxmts = 10 |
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| logical | module_is_initialized = .FALSE. |
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| real(kind=r8_kind), dimension(maxmts) | olat = 0.0_r8_kind |
| | Latitude of mountain origins (degrees)
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| real(kind=r8_kind), dimension(maxmts) | olon = 0.0_r8_kind |
| | longitude of mountain origins (degrees)
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| 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.
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| 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.
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| real(kind=r8_kind), dimension(maxmts) | wlat = 0.0_r8_kind |
| | Latitude of half-width mountain trails (degrees)
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| real(kind=r8_kind), dimension(maxmts) | wlon = 0.0_r8_kind |
| | Longitude of half-width mountain trails (degrees)
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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.
◆ gaussian_topog_mod::get_gaussian_topog
| interface gaussian_topog_mod::get_gaussian_topog |
Definition at line 54 of file gaussian_topog.F90.
Public Member Functions |
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| get_gaussian_topog_r4 |
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| get_gaussian_topog_r8 |
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◆ gaussian_topog_init_()
| subroutine gaussian_topog_init_ |
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real(kind=fms_top_kind_), dimension(:), intent(in) |
lon, |
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real(kind=fms_top_kind_), dimension(:), intent(in) |
lat, |
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real(kind=fms_top_kind_), dimension(:,:), intent(out) |
zsurf |
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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
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| [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_ |
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real(kind=fms_top_kind_), dimension(:), intent(in) |
lon, |
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real(kind=fms_top_kind_), dimension(:), intent(in) |
lat, |
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real(kind=fms_top_kind_), intent(in) |
height, |
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real(kind=fms_top_kind_), intent(in), optional |
olond, |
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real(kind=fms_top_kind_), intent(in), optional |
olatd, |
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real(kind=fms_top_kind_), intent(in), optional |
wlond, |
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real(kind=fms_top_kind_), intent(in), optional |
wlatd, |
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real(kind=fms_top_kind_), intent(in), optional |
rlond, |
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real(kind=fms_top_kind_), intent(in), optional |
rlatd |
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The height, position, width, and elongation of the mountain is controlled by optional arguments.
- Parameters
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| 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
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| 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()
◆ do_nml
◆ height
| real(kind=r8_kind), dimension(maxmts) height = 0.0_r8_kind |
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◆ maxmts
| integer, parameter maxmts = 10 |
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◆ module_is_initialized
| logical module_is_initialized = .FALSE. |
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◆ olat
| real(kind=r8_kind), dimension(maxmts) olat = 0.0_r8_kind |
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◆ olon
| real(kind=r8_kind), dimension(maxmts) olon = 0.0_r8_kind |
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◆ rlat
| real(kind=r8_kind), dimension(maxmts) rlat = 0.0_r8_kind |
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Latitude of half-width mountain ridges (degrees) for "standard" gaussian mountain set, rlon/rlat = 0.
Definition at line 104 of file gaussian_topog.F90.
◆ rlon
| real(kind=r8_kind), dimension(maxmts) rlon = 0.0_r8_kind |
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Longitude of half-width mountain ridges (degrees) for "standard" gaussian mountain set, rlon/rlat = 0.
Definition at line 102 of file gaussian_topog.F90.
◆ wlat
| real(kind=r8_kind), dimension(maxmts) wlat = 0.0_r8_kind |
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◆ wlon
| real(kind=r8_kind), dimension(maxmts) wlon = 0.0_r8_kind |
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1.9.8