Satellite Images Show Intense Thunderstorm Activity in Area Where AirAsia Flight Lost Contact

By Tom Yulsman | December 28, 2014 1:15 pm
AirAsia

An animation of satellite images acquired by NASA’s Terra satellite about two and a half hours after AirAsia Flight QZ8501 lost contact. One is in true color the other in false color. (Source: NASA)

| Update: See the bottom of this post for a new image documenting thunderstorm activity in the area where AirAsia Flight 8501 lost contact with air traffic controllers, and links to additional information. Also, a big note of caution: We don’t know yet what happened. Weather may have played a role in the plane’s disappearance, but something else could have happened. We’ll just have to wait and hope that definitive evidence comes to light.|

As I’m writing this on Sunday morning in the U.S., the search for AirAsia Flight 8501 has been suspended for the night. The Airbus 320-200 aircraft took off from Surabaya, Indonesia with 162 people on board at 5.27 a.m. local time on Sunday, and then lost contact with air traffic controllers about two hours later.

We don’t know yet what happened, but questions have already been raised about what role, if any, weather conditions may have played in the disappearance of the aircraft. With that in mind, I thought I’d share some remote sensing images of the region showing what was happening on the morning of the plane’s disappearance.

I created the animation at the top of this post to show two satellite views of the region. They were acquired by NASA’s Terra satellite about two and a half hours after the plane lost contact. The first is a true-color image with an area of thunderstorm activity circled. The second is a false-color version in which small ice crystals in high-level clouds appear in reddish-orange and peach tones. (This is the 3-6-7 composite on Terra’s MODIS instrument. For more information, go here.)

Here’s an animation with a closer view:

AirAsia

True- and false-color satellite views of thunderstorm activity in the area where AirAsia Flight QZ8501 lost contact with air traffic controllers on Dec. 28, 2014. (Images: NASA. Animation: Tom Yulsman)

If you look closely you can see the towering cauliflower-like heads of individual thunderstorm cells.

I used the 3-6-7 false-color images in the animations because some experts have been speculating that icing of devices called “pitot tubes” could have played a role in whatever happened to the aircraft. John Goglia, who writes about the aviation industry for Forbes magazine, explains:

Pitot tubes are mounted near the nose of the airplane and measure the air force flowing through them as the aircraft moves through the atmosphere.  These measurements are critical to ensuring proper air speed; flying too slowly can cause the plane to stall and flying too fast can cause a structural break up.  If an aircraft encounters icing conditions at altitude – where moisture and very cold temperatures can combine – and icing forms on the pitot tubes, this can cause a blockage or partial blockage of one or more of the tubes.  This in turn can lead to incorrect readings of the air speed.

Goglia points out that icing of pitot tubes were implicated in the crash of Air France Flight 447, an Airbus A-330 aircraft, on June 1, 2009 on a flight from Rio de Janiero to Paris.

| Update 12/29/14: The Cooperative Institute for Meteorological Satellite Studies has posted new weather satellite imagery showing weather conditions at right around the time the AirAsia flight disappeared. Here’s one example:

AirAsia

The MTSAT-2 weather satellite acquired this infrared image close to when the AirAsia flight disappeared. A circle indicates the approximate location of final contact with controllers. Singapore, the flight’s destination, is labelled as “WSSS” in the upper left corner of the image. (Source: CIMSS)

This infrared image from the MTSAT-2 satellite was acquired at 23:32 UTC — eight minutes after contact with the AirAsia aircraft was lost. According to the CIMSS post, this and other data indicate “that there were clusters of deep convection” in the area — meaning intense thunderstorm activity.

That activity included a phenomenon known as “overshooting tops.” This occurs when updrafts within a thunderstorm are so intense that air is propelled from the troposphere, the lowest atmospheric layer, into the stratosphere. As the CIMSS puts it:

Thunderstorms with OTs frequently produce hazardous weather at the Earth’s surface such as heavy rainfall, damaging winds, large hail, and tornadoes.

Weathergraphics.com also has posted imagery documenting the prevailing weather conditions when the AirAsia flight went missing. Check it out here.

Lastly, let me repeat that cautionary note: We don’t know yet what happened. The weather conditions I’ve documented here may have played a role in whatever happened to the aircraft — or not. Let’s hope that time will tell. |

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  • Buddy199

    What a way to go. RIP

  • Regeneration Nation

    Our flight from Bali to Seoul hit massive storms east of Borneo. I thought we were done for sure as our plane shook violently for about an hour, sometimes keeling abruptly left or right. That was a Korean Air flight. I can imagine the terror and feel for the families of the victims. That flight alone made me never want to fly again.

    • Tom Yulsman

      Thank you for sharing that with us. Sounds terrifying! When did you take this flight? Was it at another time or on the same day that the AirAsia flight disappeared?

  • Arshad Ali

    Let me share with author that article writing and mercantilism on-line are although 2 completely different jobs, however attention-grabbing moreover.
    One in every of my friend at hot shaper told me that dealing a client on-line could be a toughy one same just like the bloggers who feel difficulties to search out a singular topic for his or her articles. smart job guys

  • http://sott.net Niall

    Sounds like it was hit by the blast wave of an exploding meteor.

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ImaGeo

ImaGeo is a visual blog focusing on the intersection of imagery, imagination and Earth. It focuses on spectacular visuals related to the science of our planet, with an emphasis (although not an exclusive one) on the unfolding Anthropocene Epoch.

About Tom Yulsman

Tom Yulsman is Director of the Center for Environmental Journalism and a Professor of Journalism at the University of Colorado, Boulder. He also continues to work as a science and environmental journalist with more than 30 years of experience producing content for major publications. His work has appeared in the New York Times, Washington Post, Audubon, Climate Central, Columbia Journalism Review, Discover, Nieman Reports, and many other publications. He has held a variety of editorial positions over the years, including a stint as editor-in-chief of Earth magazine. Yulsman has written one book: Origins: the Quest for Our Cosmic Roots, published by the Institute of Physics in 2003.

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