|
Integrating
Weather Observations into Journey North
Using the Weather Observation Chart
|
|
|
Date
and Time:
Pick a time to take your readings. Collect them the same time each day.
Decide how you will collect them on the weekends.
Temperature:
- A good
minimum/maximum thermometer will record the highest and lowest temperatures
since your last reading. Thermometers are available in battery-powered
digital form, standard mercury/alcohol or more expensive remote sensing
and recording units. If choosing standard unit, look for one that
uses mercury for the maximum reading and alcohol for the minimum.
- To
collect the most accurate information your thermometer should be located
outside in a safe, sturdy location on the north side of the building
where it's shadiest. Position it securely beside the building, perhaps
on a brick foundation and 5 feet off the ground for the most accurate
reading. To match the readings taken by the National Weather Service
the thermometer should be located over turf.
Barometer
Reading:
- The
barometric pressure should be recorded several times a day for the
most accurate weather predictions.
- Barometric
pressure readings for a 24 hour period in your area are at AccuWeather.com.
Wind
Speed:
One
way to estimate wind speed is to use the Beaufort
Scale.
Simple
flag observations can also be used for estimates:
- No Flag
Movement = Calm
- Slight
Flag Movement = 3-5 mph
- Flag
at 45° = 8-12
mph
- Flag
at 90° = 15-20
mph
- Flag
Full Out = > 20 mph
|