SNOTEL Snow - Precipitation Update Reports
Differences Between Update Reports:
New SNOTEL Update Report: The SNOTEL Snow – Precipitation Update Report
is a dynamic, webservices-based application that retrieves the latest data
from the NWCC Air and Water Database. When choosing historical reports, they
will be created using corrected data if available. The new report also uses
daily averages for the period 1971–2000 for all elements and calculations
that reference percentage of average. The current output is limited to .html; however, it will be expanded to
text and comma separated files based on user needs.
Old SNOTEL Update Report: This is the report that has run for many years.
Reports are generated once-daily and stored. The historical reports are
never updated if corrected data are available. The “old” Update
Report will be retired on October 1, 2006.
Summary of Differences: The functionality and application rules are the
same as the old Update Report; however, the number of analysis products
has been greatly expanded in the new report. You may see slight analysis
differences between the two reports, since this new product uses true daily
averages, while the old product interpolated daily averages between the
first and the 15th of each month. Also, the rounding convention has been
changed from “banker’s rounding” used in engineering applications to the
Microsoft Excel spreadsheet standard to ensure consistency between