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JULY 2015
In This Issue:

Thanks for Taking Our Survey!

Last week you probably got a survey from us in your email box. To those of you who took the time the fill it out, thank you!

We have already gotten a very good response and have plenty of information to review. Just a preliminary review of the responses has left us all aglow in the fact that you are overall pretty pleased with our products. But you've also suggested a few places we can do better, and that's just what we were looking for.

We'll hold the drawing for the gift cards next week, but even if your name is not among those drawn, we want you to know how much we appreciate your taking the time to tell us what you think.

(You should know we never sell or loan our email list -- this survey is coming from us, being used only by us!)

Vantage Vue Makes a Cameo in Jurassic World

We just saw the most amazing movie! Jurassic World featured human engineering at its greatest -- showing a creature of such magnificence, such power, such attention to detail we gasped when it roared onto the screen! There it was, perched on top of the helipad tower, while Mr. Simon Marani, CEO of the Jurassic World Theme Park, ran over to fly his new helicopter and save 20,000 visitors. The name of this creature: Vantageopterous Vuerex!

There were also 100-foot tall dinosaurs, killer pterodactyls, and that sort of thing.

Okay, we have to admit, the movie would have been ALMOST as much fun had the Vantage Vue not been selected to make a cameo appearance, but for us, its presence validated director Colin Treverrow's commitment to authenticity and aesthetically pleasing views of this fantastical world.

It's not the first time a Davis weather station has appeared on the big screen, but it's the first time one has come close to upstaging such a leading man as Indomitus Rex. When we reached out to Tony "Toothy" Shortarms, who played Indomitus, he told us working with the Vantage Vue required seventeen extra takes, as he kept getting distracted and a little mesmerized by the spinning wind cups.

"Made me want to maybe grab a little tummy rub and a quick snooze," he told us. "I had to really use my classical training to get back into the character's pent-up rage."

Just a note, this was not a "product placement!" Seeing our little Vantage Vue was a surprise treat for us too!

AnemometerWeather Check Quiz Question 1:

True or False
: We know someone who drinks dinosaur urine every day, and looks a-mazing!

(Click here for answers.)

Vantage Vue Watches Over Historic Chapel in England

This Vantage Vue is mounted near the historic St. Aldheim's Chapel.

Steve Rogers, of McMurdo Group, a Davis reseller in the United Kingdom, sent us this pretty photo of a Vantage Vue mounted where it can watch over St. Aldheim's Chapel. The Norman chapel is in Swanage, Dorset, on the cliffs of St. Aldheim's head, 108 meters above the sea. Exactly when the chapel was built is unknown, but it is known that during the reign of King Henry III (1261 - 1272), the Crown paid a stipend for a chaplain for St. Aldheim's.

Keep up the good work, Vantage Vue, helping to preserve this piece of history.

St. Aldheim's Chapel, built over an even earlier Christian building site, is mysterious for its orientation and lack of windows.

That Vantage Vue is not the only Davis station watching the coast in Dorset.

AnemometerWeather Check Quiz Question 2:

It's thought that St. Aldheim's chapel has, at some point, been used as which of these:

A. A lookout disguised as a religious building.
B. A beacon to warn sailors off the coast.
C. A memorial to a couple who drowned nearby in the early 12th century.
D. A chantry where a priest lived, praying for the safety of sailors nearby, 24/7.
E. A "Wishing Chapel," where young women dropped a hairpin into a hole and wished for their perfect husband.
F. A place of worship.

(Click here for answers.)

Vantage Pro2 Console Helps Eradicate an Enemy

Jim was able to look through the window (that explains the reflections on the screen) and see what the temperature inside the room was, and for how long.

Jim, who lives not too far from our Hayward headquarters, wrote to tell us about using his Vantage Pro2 console for a very interesting job: getting rid of bed bugs.

"I never thought I’d be in the position of having to measure temperatures in a residence of 130°F to140°F [54°C - 60°C], " Jim wrote, "but then came the bed bugs!"

As Jim found out, killing the horrible little beasties is not easy. Since they hide so well in any crevice they can find, pesticides fail to reach them. The best way to get rid of them is to heat the room hot enough and long enough to penetrate every hiding spot -- every corner, every book, every pillow, every inch of carpet, every stuffed animal, all the bedding -- with heat. The "thermal death point" of adults and eggs depends on both temperature and time but it is at least 118°F [48°C] for 90 minutes. Jim knew his household heater was not up to that task, so he rented a commercial heater to raise the temperature in the infested room to 140°F [60°C].

"But," he wondered, "what was I going to use to keep an eye on the temperature and duration of temperature in the room during heat treatment? Trying to read a mercury thermometer through a window wasn’t going to be easy. I had tried another digital thermometer but at 110°F [43°C] it didn’t register anymore and at 115°F [46°C] the display went black."

But the solution to the problem was sitting right there: his Vantage Pro2 console!

"As you can see by the picture, the station worked very well at telling me that I’d reached 140°F [60°C], though honestly, I’d not intended to get the room quite that hot."

There's a happy ending, at least for the non-bugs in Jim's house.

"Needless to say, this isn't the 'normal' use of my station but when put to the task, it has come out with flying colors! The graph is also helpful as you can tell how long the space was up to temperature which is an important part of the eradication campaign."

Jim can stay smiling at least until he gets his power bill. (He had to locate four 20 AMP circuits in his house and leave them churning out heat for a hour or so....)

AnemometerWeather Check Quiz Question 3:

If the Vantage Pro2 console was designed to measure "normal" indoor temperatures, can Jim be assured that such a high temperature reading was accurate?

(Click here for answers.)

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AnemometerWEATHER 101

We're Having a Heat Wave

Heat has become the number-one weather killer, killing more people even than floods. In recent weeks and months, heat waves have demonstrated their lethal power. In May and June, almost 4,000 people died from heat waves in India and Pakistan. This summer people are sweltering in record heat in Romania, the United Kingdom, France, and Spain. Germany hit 104.5°F [40.3°C] on July 8, its all-time recorded high since 1881. Parts of the United States and Canada have been broiling more than normal - even in usually more temperate spots like the Pacific Northwest. As scientists discuss the role of human activities in climate change, no one doubts that a warmer climate makes for more heat waves -- and vice versa.

Those of us in the middle of a heat wave might think this is a pretty self-evident question, but here goes: just what is that sun-gift we call HEAT? The answer can be long and involved, or short and sweet. Since we are a little bit sweaty right now, let's go with short and sweet. Heat is energy, specifically thermal energy that is currently in the process of being transferred from one object to another because of a temperature difference between them. Its source, on our planet, is the sun. It is transferred from the sun via radiation. It can then be transferred by conduction (from the hot sand to the soles of your bare feet), radiation (from the beach bonfire to your hand held over it), or convection (when water or air moves as a mass, such as warm air rising, then cooling and falling). All three means of transfer play roles in both climate and weather, and in the formation of heat waves.

According to Jan Null of Golden Gate Weather, you can't have a heat wave that lasts just one day. Jan tried to find a definition of just how many days makes a heat wave. He reports that the World Meteorological Organization says you need five days when the daily maximum temperature exceeds the average maximum temperature by 5°C; but the National Weather Service glossary says it's a "period" of uncomfortably hot and unusually humid weather, typically two days or more.

Regardless of how it got so hot out there, heat is a deadly reality of our world. Weather forecasters understand the importance of warning people about high heat and use these terms when temperatures are predicted to soar dangerously:

A Heat Advisory means that the Heat Index values are forecasted to meet a locally defined criteria (usually daytime highs of 100°-105° F [38°-41°C]) for one to two days .

If the Heat Index is forecasted to exceed the criteria for two or more days, an Excessive Heat Warning is issued.

An Excessive Heat Watch means that conditions are favorable for an excessive heat event to meet or exceed local Excessive Heat Warning criteria in the next 24 to 72 hours.

Summer is not over here in the Northern Hemisphere, so what can you do? You can pour a cold drink and crank up the AC, but only after you have made sure that you are prepared for a power outage; that any elderly, young, sick, or overweight relatives and neighbors are not in need of help; that your children know not to play in automobiles; and that your animals have water and shade. You can eat small meals more often and stay hydrated; not leave the dog in the car; put off strenuous activity; and stay out of the sun.

You can make the best of a hot situation. Let your laundry air dry outside, take night walks, enjoy the feeling of fewer allergens in the air, and revel in good hair days. You can encourage your little budding scientists by building a solar oven with them and enjoying gooey sun-cooked s’mores. (See NASA’s Climate Kids page for instructions.)

And you can check out your awesome temperature data!  Watch the Heat Index, and compare humidity and temperature graphs. If you had your station a year ago, look at the temperature this time last year and compare highs and lows for the month.  If you have solar and UV sensors, check out their readings and compare the data to the Heat Index.

If you see some truly amazing data from your back yard, let us know!

P. S. Now is a good time to be reminded that heatstroke deaths of children left in cars is still a very real problem. According to Jan Null of Golden Gate Weather, eight children in the US have died this year. He has made preventing such deaths his life's work and maintains an informative site on the subject. Check out NoHeatStroke. It has information on studies of vehicle heating, safety recommendations, stats, FAQs and links.

AnemometerWeather Check Quiz Question 4:

True or False:

1. One degree Kelvin is exactly equal to one degree Celsius.
2. The lowest temperature anything can be is -100° Kelvin.
3. Before Daniel Fahrenheit developed the mercury thermometer, thermometers used wine.
4. Saturday will be a great day for our picnic! The forecasted high is 297°K!
5. Air is a good conductor of heat.
6. According to Jan Null's study on vehicle heating, cracking the windows did not significantly slow the vehicle's heating rate.

(Click here for answers.)

>> Back to Menu

AnemometerTECH TIPS

WeatherLink for Mac Users Can Now Upload Automatically to WeatherLink.com

Mac users, get out your celebrating shoes! We've updated our WeatherLink for Mac OS X software so that Mac users can automatically upload to the WeatherLink Network (WeatherLink.com) through a WeatherLink Network Annual Subscription.

There were a few other small fixes, but the big news is the ability to get your data onto WeatherLink.com automatically.

New versions (version 6.0.2) of WeatherLink for Mac include the feature, but if you already have an older version of WeatherLink for Mac, you can download a free update here. Click here to get a WeatherLink Annual Subscription.

>> Back to Menu

Anemometerdavis in the news

Malone Tigers Have a WeatherSTEM Vantage Pro2

This WeatherSTEM Vantage Pro2 is customized by Ed for the Malone Tigers.

Florida has another WeatherSTEM school! WeatherSTEM's Ed Mansouri has donated a Vantage Pro2, customized in the WeatherSTEM style, to Malone School in Malone, Florida. The station was featured in an article in the Jackson County Floridian.

Malone is a K-12 school, which means students will be able to incorporate weather data in ever more complex and integrated lessons from Kindergarten circle-time to high school AP Physics. You can see the local current weather on the school's web site.

The gift is part of Ed's commitment to give a station to every school in Florida. Apparently, Ed intends to make Florida the hub of United States' future scientists, engineers and meteorologists.

That makes him our hero!

AnemometerWeather Check Quiz Question 5:

Malone's 6th graders can probably answer these questions. How many can you answer (correctly, that is)?

1.The thermosphere has high temperatures, but it's not considered hot. Why?
2. What is the most common way thermal energy moves?
3. What type of cloud is fog?
4. What is a front?
5. What is the difference between weather and climate?
6. What two factors determine climate?

(Click here for answers.)

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AnemometerMail Bag & I Spy a Davis Station

Vantage Vues Spied Gliding and Rocking

If you happen to be a glider pilot in northeast Bavaria, you might see this at the glider field. Pilot Rene Zahn's weather station keeps all the pilots aware of ultra-current wind, temp, dew point, and solar radiation.


Steve Stewardson, of West Midlands, England, saw this Vantage Vue on the stage at the Bushy's Beer Tent on the Isle of Man. He was there for the TT Motorcycle Races, not just for the beer...

What's on YOUR Wall?

Jason Karvelot, our in-house meteorologist, is a big fan of The Weather Channel. He enjoyed seeing this tornado alert featuring a Vantage Pro2 in the home of the reporter.

Just What Does the ISS Battery Do?

Dale Coy had a bone to pick with us over a question in our last e-newsletter. We asked: True or False: The solar panel recharges the lithium battery in the ISS.

We then told you: "The lithium battery is not rechargeable. The solar panel powers the station during the day, while the battery powers it at night or when sunlight is low."

Wherein lay said bone. Dale said it is incorrect to say the battery powers the station at night, "because really, the super capacitor, which is charged by the solar panel, is what is doing the powering when the solar panels are in the dark. When the super capacitor runs out of juice, the battery takes over."

He's right of course, and we were wrong to so underestimate the brain power of our readers. We only wanted to skip the whole "super capacitor" issue and just focus on the fact that the lithium battery is a backup battery and is not rechargeable. No dice, says Dale, because as we ought to know by now, Davis fans are tech-minded folks who value accuracy. Thanks for the reminder, Dale!

 What do you think of the E-Newsletter? How can we improve? How do you use your Davis weather products? E-mail us at news@davisnet.com.


Question 1: True or False: We know someone who drinks dinosaur urine every day, and looks a-mazing!

True, and that someone is YOU. (And us!) According to this YouTube video from Curious Minds, almost every molecule in your glass of water was drunk by a dinosaur. Since all the water on earth has been here for 4.5 billion, and dinosaurs roamed the earth while drinking, and uh, filtering, that same water for 186 million years, it's likely every dropped passed through a dinosaur.

>> Back to Menu

Question 2: It's thought that St. Aldheim's chapel has, at some point, been used as which of these?

All of them! Including currently as a place of worship.

>> Back to Menu

Question 3: If the Vantage Pro2 console was designed to measure "normal" indoor temperatures, can Jim be assured that such a high temperature reading was accurate?

Our consoles will read with great accuracy up to 140°F [60°C]. Above that, the accuracy begins to degrade, but the console's thermometer will continue to report temperatures well above 140°F [60°C].

>> Back to Menu

Question 4:True or False:

1. One degree Kelvin is exactly equal to one degree Celsius.

2. The lowest temperature anything can be is -100° Kelvin.
FALSE. 0 on the Kelvin scale is absolute zero, the temperature at which atoms and molecules would possess a minimum of energy and theoretically, no thermal motion. There are no negative numbers on the Kelvin scale.

3. Before Daniel Fahrenheit developed the mercury thermometer, thermometers used wine.
TRUE. Ferdinand II, Grand Duke of Tuscany, invented the first closed thermometer using alcohol (wine) as the liquid. Danish astronomer Olaus Roemer made an alcohol-based thermometer with a scale, marking where water boils and where ice melts. He had a strong influence on Fahrenheit who changed Roemer’s thermometer by using mercury and modifying his scale.

4. Saturday will be a great day for our picnic! The forecasted high is 297°K!
TRUE. That’s 24°C or 76°F. Perfect picnic weather!

5. Air is a good conductor of heat.
FALSE. It’s about the worst conductor because its molecules are not in continuous contact with each other.

6. According to Jan Null's study on vehicle heating, cracking the windows did not significantly slow the vehicle's heating rate.
TRUE. When the vehicle's windows were opened 1.5 inches, the temperature inside the car rose 3.1°F per minute, compared to 3.5°F per minute with the windows closed. But the final temperature after 50 minutes was identical

>> Back to Menu

Question 5: Malone's 6th graders can probably answer these questions. How many can answer?

1.The thermosphere has high temperatures, but it's not considered hot. Why?
The particles are moving fast. Since temperature is a measurement of the average speed or kinetic energy of the atoms in a substance, this means the temperature is high. But the atmosphere is also very thin, so the particles don't collide with each other, so it's not hot.

2. What is the most common way thermal energy moves?

3. What type of cloud is fog?

4. What is a front?
A boundary where two different air masses meet.

5. What is the difference between weather and climate?
Weather is the condition of the atmosphere at a particular time and place. Climate is the average weather condition in an area over a long period of time.

6. What two factors determine climate?
Temperature and precipitation.

Questions and answers were posted by OTS 6th Grade Teacher on Quizlet.

>> Back to Menu


Each month after the E-News goes out, we receive messages back. Sometimes the messages are in response to a story we shared; other times they are a request for help of some kind. We read all the emails, answer those we can, and pass the rest on to the appropriate departments. If you're interested in the fastest possible reply, news@davisnet.com may not be the best place to send your message. Questions about how things work should be addressed to tech support directly at support@davisnet.com. For general information about the products, contact sales@davisnet.com. To request a catalog, see the links for catalog requests on our web site at www.davisnet.com/contact/catalog.asp.

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Well, that's it for this edition. You'll be hearing from us again next month!
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