*TAN Section | ![]() | ![]() |
RFM Driver Table Sections: Ray Path | 24JUL24 |
| Refracted tangent height (as below) |
*GEO | Geometric tangent height |
*ELE | Elevation angle |
*HGT | Height level | Flags: FLX |
*LEN | Homogeneous path | Flags: HOM |
*SEC | Plane-parallel atmosphere | Flags: NAD or ZEN |
*DIM | Create Look-Up Table | Flags: TAB |
Field | Type | Description | Units | Range
R
| Refracted tangent height
[2]
| km
| BOA : min(TOA,HGTOBS)
| | C200
| Name of a Data File
[1]
|
| |
---|
General Comments
While such paths, by definition, cannot intersect the surface, if
FOV convolution is included (FOV Flag) it is
is possible that some of the additional ray paths will intersect
the surface, in which case
Extra profile levels will be interpolated for any specified
HGT
values which are not existing internal height profile levels.
*TAN paths.tan ! list of tangent heights from a standard scan pattern. 40 41 42 ! additional paths at 40, 41, 42 km,
*SEC 1 ! Direct nadir view only
*ELE -90, -1.5, -0.5, 0.0, 0.5, 1.5 ! [deg] nadir, plus views towards limb
*LEN UNITS=cm 50.3 ! Output filenames will be, eg tra_50300.asc