Dec 24, 2008

NASA's Gift to Mr. Claus


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Dec. 24, 2008: Last year, a certain Mr. Claus got a very nice gift.

Terry Claus, captain of a 53-foot charter boat called The Qualifier, received something that helped him avoid a disaster at sea--namely, data transmitted onto his GPS screen. If "data" isn't your idea of a Christmas gift, just listen:


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"One night, my wife, children, and I were fishing for swordfish 25 miles off the Miami coast," says Claus. "We saw black clouds to the west. That's not unusual where we live. Florida storms sometimes build over land and then dissipate. But that night, when I checked the radar on my GPS, I saw an incredible line of severe thunderstorms moving towards us -- and fast."


Right: Capt. Terry Claus and the Qualifier. [more]

"I checked the lightning strike screen, and it looked like a chained link fence of continuous lightning," he continues. "I shouted, 'Reel in the lines! We have to get out of here fast!' I could see on the screen where the cloud mass was weakest, so I followed that route. A 747 jet flew overhead and seemed to be following the same route we were following. We must have been looking at the same data! We made it to port safely."



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The Short-term Prediction Research and Transition (SPoRT) project at the Marshall Space Flight Center "facilitates the transfer and use of unique NASA satellite data to improve short-term weather forecasts, and disseminates unique weather products like those that helped make Claus's bird's eye view of the weather possible that night," says Dr. Gary Jedlovec, satellite meteorologist and SPoRT principal investigator.

The SPoRT team makes their data and products available via the web and other public dissemination sites in order to assist the National Weather Service and private weather providers like WorldWinds, Inc. in Slidell, Louisiana in making these premiere products available to the marine community. SPoRT has partnered with WorldWinds to disseminate high resolution atmospheric and ocean data from NASA's Earth Observation System satellites. WorldWinds repackages the data, along with other weather/data products they generate themselves and some radar data from WxWorx, for the mariners along the Gulf and Atlantic coasts. About ten thousand of them subscribe to the data service via XM satellite radio.

Any time they feel a little edgy about what the day, or night, might hold in store, Claus and other boaters can scrutinize a GPS for answers. With the push of a button, a boat captain can choose from among views of sea surface temperatures, Doppler radar, wind speed, wind direction, lightning strikes, and more, both real-time and forecasted.



Above: A screen shot from the WxWorx system showing sea surface temperatures in the Gulf of Mexico off the coast of New Orleans. More screen shots:

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"Our business is helping other government agencies and private weather partners find vital ways to use our data," says Jedlovec. "In fact, weather forecasters all over the US, including Florida coastal regions, use many of our data products to improve their weather forecasts. Accurate marine weather forecasts are especially crucial to boaters. They sure don't want to be surprised by high winds, 10-foot waves, and lightning strikes."

Sea surface temperatures play an important role in hurricane and tropical storm development but also can be a significant factor in spawning the storms Claus dreads. Sea surface temperatures also play an important role in creating just the right setting for something Claus loves – a lot of fish in one place. Each species of game fish has a range of water temperature they prefer, so "SST charts" can lead a fisherman to his prize catch.

Below: Sea surface temperature (SST) measurements from a NASA satellite. Red is warmer, blue cooler. [



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There's another thing that helps create the perfect ambience for a fish party – plankton. The green stuff is almost always the most popular hors d'oeuvre. If an ocean area has a lot of plankton, it's a likely gathering spot. The SPoRT team knows how to use NASA satellite data to find such areas. High chlorophyll concentration, indicated in satellite data by greenness (the greener the more chlorophyll), means lots of plankton.

"If you know where blue water [no plankton] meets green [more plankton], you'll find more bait fish, and then more catchable fish," says Claus. "Fish swim up and down the edge of the weed boundaries and also the defined edge where warmer water meets cooler water."

That's why WorldWinds uses the SPoRT sea surface temperature data along with SPoRT chlorophyll data as components in a fishing product called FishBytes (

) that reveals when and where the impromptu fish parties take place. Like the weather data, this product is available via XM radio on a GPS.


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Right: WxWorx in action.



NASA helps fishers find fish feasting. (Say that 10 times rapidly!) And what about the poor fish? It just doesn't seem fair.

"Most of our customers are charter fishing captains," says Benjamin Jelly of WorldWinds. "Environmental and conservation groups concerned for fish view us, and the charter fishers, in a positive light."

"When we take out charter clients, we follow the environmental laws concerning limit numbers and size," explains Claus. "And when we fish in tournaments, we use circular hooks for bait. It's a tournament rule. The fish can't swallow the hook, so the fish aren't hurt. Once we catch a fish, we release it immediately. In fact, an angler's tournament score is based on the number of releases he or she makes."

Many sport fishermen also participate in voluntary tagging programs. This allows researchers, including fisheries biologists and marine scientists, to garner more information about species numbers, migration patterns, and environmental preferences.

"There are many, many tournament participants, and literally thousands of recreational fishermen, some of which fish year-round," says Jelly. "So our system allows more fishermen to apply more tags and collect more data about these species. That's good for the fish."

The fish are happy. Mr. Claus is happy. NASA's happy.

Good SPoRT!


Author: Dauna Coulter | Editor: Dr. Tony Phillips | Credit: Science@NASA

more information


1. Captain Terry Claus has been a United States Coast Guard licensed Captain since 1980. Terry's captaining and fishing experience include South Florida, the Florida Keys, Bahamas and the Gulf of Mexico. More: #1, #2.

2. SPoRT data are available online at no cost to anyone who wants to view it. SPoRT is based at the National Space Science and Technology Center in Huntsville, Alabama.

3. WorldWinds, Inc. spun off back in the 90s from a NASA grant called Small Business Innovative Research. That grant encouraged use of NASA-developed technologies by the private sector so that the public could get the most 'bang for the buck' out of NASA science.

4. WxWorx is the exclusive weather data provider for award-winning XM WX Satellite Weather, a trusted information source for professional pilots and mariners. Founded by Meteorologists in 2002, the company supplies both hardware and software solutions for onboard weather to the aviation, marine, and emergency management industries. An affiliate of weather analysis and technology pioneer Baron Services, WxWorx employs many of the same patented capabilities used in the broadcast television industry for severe weather tracking and forecasting.

5. An organization called The Billfish Foundation works worldwide for the conservation of billfish and related species and to improve ocean health. Their tag and release program was established by anglers and captains. It is an important source of information for scientists who want to increase the knowledge base needed to enhance long term sustainable management and conservation of billfish and related species. The tag and release program provides scientists and fishery managers data on migration patterns, age and growth rates, stock structure, and more.

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