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PA-PIPE Weather Models

Accum. Degree Day Departure | Accum. Degree Days
Daily Avg. 2-inch Soil Temp | Daily Min. 2-inch Soil Temp

Accumulated Degree Day Departure From Average Model

A Degree Day Accumulation is calculated from January 1 of the current year. The accumulation uses a modified arithmetic method (base 50° F) on daily minimum temperatures. The seasonal accumulation is subtracted from a 30-year (1971-2000) average seasonal accumulation.

Model Key

Accumulated degree day departure values (Degree Day Departure in key) ranges from < 900° F to > 900° F in increments (color classes) of 200°, 100°, and 50° F depending on the proximity of a value to 0.

Users should take note of the non-linear increments in the key when interpreting a map value.

Accumulated Degree Day Departure From Average Weather Model Product

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Accumulated Degree Days Model

A Degree Day Accumulation is calculated from January 1 of the current year. The accumulation uses a modified arithmetic method (base 50° F) on daily minimum temperatures.

Model Key

Accumulated degree day values (Accumulated Degree Days in key) ranges from 0° F to > 15000° F in increments (color classes) of 250°, 500°, and 2500° F depending on the proximity of a value to 0.

User should take note of the non-linear increments in the key when interpreting a map value.

Accumulated Degree Days Weather Model Product

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Daily Average 2-inch Soil Temperature Model

The Daily Average 2-inch Soil Temperature is calculated using an arithmetic method on daily maximum and minimum soil temperatures at a 2-inch depth. The values are intended to represent soil temperature under a clipped grass surface.

Model Key

Temperatures (Soil Temperatures in key) ranges from 1° F to 100° F in increments (color classes) of 10° F.

Daily Average 2-inch Soil Temperature Weather Model Product

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Daily Minimum 2-inch Soil Temperature Model

The Daily Minimum 2-inch Soil Temperature landscape model represents the 2-inch daily minimum soil temperature under a clipped grass surface.

Model Key

Temperatures (Soil Temperatures in key) ranges from 1° F to 100° F in increments (color classes) of 10° F.

Daily Minimum 2-inch Soil Temperature Weather Model Product

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