btemp

Contents: Description, Arguments, Usage, Examples, Related Functions Supported Under Version: >1.69 Current Davinci Version: 2.27 64-bit Safe: Yes Description Compute brightness temperature Arguments and Return Values Arguments: An array of wavenumbers and an array of radiance values Return Value: An array of the dimensions of the inputs containing temperature values in Kelvin. Usage Syntax: btemp(wavenumber, radiance) The btemp() function computes the brightness temperature, in kelvins, of the given radiance(s) at the specified wavenumber(s). Wavenumbers are assumed to be in units of reciprocal centimeters (often denoted /cm, or sometimes cm^-1). Radiance values are assumed to be spectral radiance per unit wavenumber, in units of watts per centimeter squared per steradian per reciprocal centimeter (W cm^-2 sr^-1 /cm^-1, the same units returned by bbr). The btemp() function returns a DOUBLE. Examples dv> wavenumbers 1x10x1 array of double, bsq format [80 bytes] 1477.84 1477.84 1267.62 1174.85 1075.09 983.691 909.883 850.846 796.481 675.314 dv> rad 1x10x1 array of float, bsq format [40 bytes] 3.55982e-06 3.69138e-06 6.36132e-06 6.90406e-06 7.49148e-06 8.34252e-06 9.03230e-06 9.66600e-06 9.52010e-06 3.80962e-06 dv> temp=btemp(wavenumbers,rad) 1x10x1 array of double, bsq format [80 bytes] 304.391 305.979 306.719 299.850 292.353 287.720 284.078 281.917 275.334 212.262

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