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New weather product helps pinpoint icy cloudsNew weather product helps pinpoint icy clouds

Pilots flying in Alaska will have an opportunity starting September 1 to evaluate an experimental weather product from the National Oceanic and Atmospheric Administration that identifies the location of clouds and icing conditions along selected flight routes.

The Alaska Aviation Cross-section, developed by scientists at Colorado State University, makes use of the NOAA and NASA’s Joint Polar Satellite System imaging system satellite sensors that detect visible and infrared light wavelengths to produce a diagram of “the anticipated vertical distribution of clouds along each route, and the state of the clouds in terms of water, ice or supercooled liquid.” A cross-section of the terrain, and an estimate of the freezing level are also produced, according to the project website.

The Alaska Aviation Cross-section is a NOAA-funded project introduced a year ago but is being made available for pilot demonstration and feedback in an enhanced version this year.

With a sparse network of weather reporting stations, few weather radar installations, and an incomplete network of ADS-B ground stations, pilots face chronic shortages of weather-information sources for making their go/no-go decisions, noted Tom George, AOPA Alaska regional manager.

“AOPA and other aviation organizations have worked closely with the scientists and satellite team to help shape this product,” he said. “We are excited to see this first of its kind ‘cross section’ product. Having information about the vertical extent of clouds—as well as where to expect icing—is a huge step forward.”

Pilots who give the cross-section a test run can refer to a quick-start user’s guide and frequently asked questions page, and can provide their feedback through an online survey that they can take multiple times as they gain experience with the product.

Pilots are also requested to file pilot reports along the routes they fly.

“The scientists use these pireps to verify and tweak their algorithms,” George said, adding that the pireps will be displayed as near-real-time information.

George also discussed the importance to pilots of having information about the vertical nature of clouds—and the potential for airframe icing—in a NASA article that reported on the product’s release.

Dan Namowitz

Dan Namowitz

Associate Editor Web
Associate Editor Web Dan Namowitz has been writing for AOPA in a variety of capacities since 1991. He has been a flight instructor since 1990 and is a 30-year AOPA member.
Topics: Advocacy, Weather, Pilot Weather Briefing Services

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