QUICK TUV CALCULATOR

This web page runs the 4.1 version of the TUV model. You can run the model for a specified latitude, longitude and time (input option 1), or for a given solar zenith angle (input option 2). In either case, you must also specify the additional parameters in the second column. Also, you may select to print out the photolysis rates and/or the solar actinic flux spectrum at a given altitude above the surface (output option 1), or the erythemal UV and/or solar irradiance at that altitude (output option 2). For any problem, or to send comments, email TUV administrators.

INPUT OPTION 1
LATITUDE (deg):
LONGITUDE (deg):
DATE (YYYYMMDD):
TIME (hh:mm:ss, GMT):
INPUT OPTION 2
SOLAR ZENITH ANGLE (deg):
OTHER INPUT PARAMETERS
OVERHEAD OZONE COLUMN (du):
SURFACE ALBEDO (0-1):
GROUND ELEVATION (km asl):
MEASUREM. ALTITUDE (km asl):

Wavelength start:End:Increments:
OUTPUT OPTION 1
(for Atmospheric Science)
MOLECULAR PHOTOLYSIS FREQUENCIES (s-1)
ACTINIC FLUX, SPECTRAL (quanta s-1 cm-2 nm-1)
OUTPUT OPTION 2
(for Biology)
IRRADIANCE, WEIGHTED (W m-2)
IRRADIANCE, SPECTRAL (W m-2 nm-1)

RADIATION TRANSFER MODEL

Pseudo-spherical 2 streams (faster, less accurate)
Pseudo-spherical discrete ordinate 4 streams (slower, more accurate)
GO!
RESET

The wavelength parameters are used to specify the operational range of the TUV Calculator. You can use wavelength start and end to focus on a particular chemical species. Set increments to -156 for an auto-generated wavelength grid.

If your usage of the TUV calculator is high-volume (greater than ~100 requests per day), we suggest that you download the TUV FORTRAN code and build an executable to perform the calculations locally on your own computer.