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Planning to watch the eclipse?

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With just your smartphone
and a thermometer, you can help contribute

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to our understanding
of how the eclipse affects our atmosphere.

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Even if you will only experience
a partial eclipse from your location,

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your observations are still valuable.

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Start
by downloading the GLOBE Observer app.

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You will need a connection to the internet
and access to email

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in order to set up an account.

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So you should plan to do this step
before the day of the eclipse.

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Complete the brief in-app tutorials
for Land Cover and Clouds.

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Don't worry if the Eclipse tool
isn't visible in the app yet,

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it will appear closer to the eclipse.

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Next, find a thermometer that you can use

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to measure air temperature
at your precise location.

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Remember, the temperature in your weather
app is from a weather

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station that may be far away.

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You can
check the accuracy of your thermometer

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by putting the probe in an ice bath.

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After 10 minutes,
the thermometer should read

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between plus or minus 0.5 degrees Celsius.

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On the day of the eclipse, plan
to take observations

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for an hour or two before
and after the eclipse.

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The longer that you take
measurements, the easier

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it will be to see changes in the air
temperature.

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Be sure to pack everything
you need to be safe

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and comfortable during the eclipse.

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Look for an area
with a clear view of the sky

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while being cautious of uneven ground,
moving

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vehicles, and other hazards.

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Once you're set up, launch the GLOBE
Observer app and open the Eclipse tool.

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You'll start by choosing
between Celsius and Fahrenheit

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and selecting the type of thermometer
that you will be using.

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Next, use the Land Cover tool
to document your observation site.

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You will take photos in each direction,
as well as, up and down.

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Include your thermometer
in one of your photos.

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Enter your

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first temperature measurement
and observe the sky using the clouds tool.

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The app will prompt you
to take temperature measurements

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every 5 to 10 minutes leading up to
and after the eclipse.

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If you notice any changes in the clouds,

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use the Clouds tool
to document these changes.

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Feel free to add captions to your photos
with observations of the wind,

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animal behavior,
and any other changes that you experience.

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Now you're all set to observe the eclipse.

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Remember to take a break
during maximum eclipse to enjoy this

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incredible experience.

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Learn more at observer.globe.gov/eclipse

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and download the GLOBE Observer app
from the Apple App Store or Google Play.