||This program allows to calculate simple daily, monthly, and yearly
summaries of hourly radiation and climate parameters as decompressed from
the SAMSON solar radiation CD. The program corrects errors (missing data),
and reports the errors to a file. However, large strings of errors (many
consecutive days) can result in wrong summaries. The error file should
be checked for such errors and the data (summaries) should be checked accordingly.
The program does not calculate correct transmittance values, since the
calculated transmittance values are not sun-angle corrected. Do not input
SAMSON data into this program if the data has been extracted using the
tools provided on the CD. The extraction tool saves the data in a slightly
different format, which is not compatible with sum_srad.for.
||This is an improved version of sum_srad.for.
This routine allows analyzing the hourly SAMSON radiation data more comprehensively.
However, the analysis of the climate variables as available in the same
files has been dropped. However, the analysis of the transmittance has
been improved, enabling the sun-angle correction of transmittance (and
thus unlinking the transmittance from the current sun angle). There is
a free available version of the hourly SAMSON data available on the web.
This is a reduced version of the SAMSON-CD data, containing only the pure
radiation data, but lacking the other climate
is specifically suited to analyze this data as well since it does not assume
include climate variables. Do not input SAMSON data into this program if
the data has been extracted using the tools provided on the CD. The extraction
tool saves the data in a slightly different format, which is not compatible
If data is downloaded from the Web, simply decompress the data an follow
the instruction below to analyze the data.
||A very simple program that enables to calculate the position of the
sun based on simple geographical data Lat/Lon, local time, local time meridian.
From this input data the program generates values for local solar noon,
solar altitude, azimuth, and zenith angle, as well as some other parameters
(e.g. "mass of the atmosphere").
||This is an equally simple tool to calculate the atmospheric attenuation
due to various sun altitude angles. The program quotes for sun altitude
angle and for vertical atmospheric transmittance and displays the resulting
reduction in transmittivity, as well as some other variables (e.g. "mass
of the atmosphere").
||This program enables to analyze and summarize daily SnoTel data that
can be downloaded in the original form from the web. The data is provided
in three different formats depending on the progress of installation of
new measurement stations. The program is able to recognize the data format
automatically, and to check and correct (somewhat) errors in the data.
Even though the providers claim that the program is error-checked, there
are numerous errors still inherent. The program checks for ca. 10 different
data errors and writes the errors (including an error code) into an error-file.
This enables to check and correct errors afterwards. The data output of
monthly values contains absolute min/max temperature, average min/mean/max
temperature, precipitation sum, and last spring-frost and first fall-frost
(recorded in Julian days). This data can further be analyzed
||This program allows to generate long-term climate normals (period is
of choice) based on the output of sum_snot.for.
||This program allows to generate lattice coordinates to prepare point
lattices to sample grid values (without interpolating when sampling lattices