Smarts Code, Version 2.9.5

SMARTS code, version 2.9.5
For Windows

USER’S MANUAL

Christian A. Gueymard Solar Consulting Services, USA December 2005

CONTENTS
1. INTRODUCTION .............................................................................................................................................................. 2 2. FORTRAN LANGUAGE AND EXECUTABLES.................................................................................................... 2 3. HARDWARE AND SOFTWARE REQUIREMENTS ............................................................................................ 3 4. SOFTWARE INSTALLATION AND USE ................................................................................................................ 3 5. RUNNING THE CODE.................................................................................................................................................. 6 6. INPUT PREPARATION.................................................................................................................................................. 7 7. INPUT VARIABLES LIST.......................................................................................................................................... 27 8. USER-DEFINED DATA FILES ................................................................................................................................... 28 9. OUTPUT FILES.............................................................................................................................................................. 28 10.TROUBLESHOOTING, WARNING & ERROR MESSAGES............................................................................... 28 11. SAMPLE RUNS AND PRINTOUT ............................................................................................................................ 33 12. UV ACTION-WEIGHTED IRRADIANCES.............................................................................................................. 33 13. REVISED EXTRATERRESTRIAL SPECTRUM................................................................................................... 34 14. COMPARISONS WITH MODTRAN ........................................................................................................................ 36 15.APPLICATIONS.............................................................................................................................................................. 40 16. SUMMARY OF THE NEW FEATURES IN VERSION 2.9.X ................................................................................ 41 17. REFERENCES ................................................................................................................................................................. 45APPENDIX: PRINTOUTS FOR EXAMPLE 6 ................................................................................................................ 48

© Solar Consulting Services, 2005 Please report any problem (or success stories...) to the author! Email address: Chris@SolarConsultingServices.com

1. INTRODUCTION
SMARTS (Simple Model of the Atmospheric Radiative Transfer of Sunshine) is aspectral model and Fortran code to predict the direct beam, diffuse, and global irradiance incident on surfaces of any geometry at the Earth’s surface. It covers the whole shortwave solar spectrum (280 to 4000 nm), and thus includes the UVA, UVB, Visible and Near-Infrared bands. Besides the regular irradiance predictions needed for many possible applications, it can be used to simulate the spectralor broadband irradiance that would be measured by a radiometer, such as a spectroradiometer, a pyranometer, or a pyrheliometer. It can also predict the photosynthetically active components of radiation, the illuminance on any surface, the luminous efficacy of direct, diffuse, and global radiation, the UV index, as well as various UV action weighted spectra. Version 2.0 of SMARTS was released in...