isabella232 / volcano-ash3d-hourssince

HoursSince

HoursSince is a collection of functions and subroutines that calculate the number of hours of a given calendar date from Jan. 1 of a reference year. These functions were written as a component of the USGS volcanic ash transport and dispersion model, Ash3d. However, since they are useful for other programs outside of Ash3d, they are collected into a stand-along file that can either be compiled as a library or simply compiled directly with other source code.

To compile as a library, simple type:

make

Some subroutines in HoursSince.f90 have stand-alone wrapper programs, using 1900 as the base year for the hours calculation.
HoursSince1900
yyyymmddhh_since_1900

To compile these wrapper programs, type:

make tools

To install the library, edit the INSTALLDIR variable of the makefile (the default is /opt/USGS) and type:

make install

You will need to have write permission in ${INSTALLDIR} or install as root.

Authors

Hans F. Schwaiger [email protected]
Larry G. Mastin [email protected]
Roger P. Denlinger [email protected]