Module 8 – Isarithmic Mapping
On this week’s assignment we were asked to create an Isarithmic
map using a geodatabase from the USADA Geospatial Gateway in AcrMap 10.3.The
data shown represents Washington State and the annual amount of precipitation
that has occurred over a twenty year period from 1981 – 2010.
As you worked through the lab excurses you learned about PRISM
(Parameter-elevation Relationships on Independent Slopes Mode), which is an interpolation
method that shows an account for the major physiographic factors. It
incorporates elevation surfaces by utilizing digital elevation model (DEM).
This is done by calculating a climate elevation regression for each DEM grid
cell. Monitoring locations collect the
data that take into a count elevation, coastal proximity, topographic orientation,
and vertical atmospheric layers. We were
also asked to add contour lines which help you see the highs and low points as
well as slopes and valleys of the area.
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