Agriculture
Keeping Bugs Away from Food
Silk’s superpowers
New Gene Fights Potato Blight
Amphibians
Salamanders
Toads
Tree Frogs
Animals
Ants on Stilts
Fishing for Giant Squid
The Littlest Lemurs
Behavior
Body clocks
Mosquito duets
Taking a Spill for Science
Birds
Songbirds
Penguins
Robins
Chemistry and Materials
Sugary Survival Skill
Big Machine Reveals Small Worlds
Boosting Fuel Cells
Computers
Lighting goes digital
Galaxies far, far, far away
A New Look at Saturn's rings
Dinosaurs and Fossils
Dino Takeout for Mammals
Did Dinosaurs Do Handstands?
Dinosaur Dig
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Earth
Hints of Life in Ancient Lava
A Great Quake Coming?
Giving Sharks Safe Homes
Environment
Improving the Camel
Pumping Up Poison Ivy
Will Climate Change Depose Monarchs?
Finding the Past
Early Maya Writing
Untangling Human Origins
A Long Haul
Fish
Electric Ray
Halibut
Parrotfish
Food and Nutrition
How Super Are Superfruits?
Symbols from the Stone Age
Eat Out, Eat Smart
GSAT English Rules
Who vs. That vs. Which
Adjectives and Adverbs
Problems with Prepositions
GSAT Exam Preparation Jamaica
The Annual GSAT Scholarships
Ministry of Education Announces 82 GSAT Scholarships for 2010
Results of GSAT are in schools this week
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
42,000 students will sit for the GSAT Exam in two weeks
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
10 Common Mistakes When Preparing for the GSAT Math Test
42,000 students will sit for the GSAT Exam in two weeks
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Human Body
Hey batter, wake up!
Heart Revival
Taste Messenger
Invertebrates
Invertebrates
Cockroaches
Giant Squid
Mammals
Poodles
St. Bernards
Tigers
Parents
What Not to Say to Emerging Readers
How children learn
Children and Media
Physics
Electric Backpack
Thinner Air, Less Splatter
Strange Universe: The Stuff of Darkness
Plants
Cactus Goo for Clean Water
Sweet, Sticky Science
Springing forward
Reptiles
Turtles
Tortoises
Chameleons
Space and Astronomy
Return to Space
Galaxies Divide Sharply Along Color Lines
A Smashing Display
Technology and Engineering
A Clean Getaway
Weaving with Light
Space Umbrellas to Shield Earth
The Parts of Speech
What is a Verb?
Problems with Prepositions
What is a Preposition?
Transportation
Tinkering With the Basic Bike
Are Propellers Fin-ished?
Ready, unplug, drive
Weather
A Dire Shortage of Water
Weekend Weather Really Is Different
Where rivers run uphill
Add your Article

Weekend Weather Really Is Different

Do you ever feel like the weather is out to get you? All week long, it seems, you sit inside at school while the sun shines outside. Then, as soon as the weekend comes, the sky turns gray. There's rain in the forecast. In some ways, you may be right. Weekend weather differs from weekday weather in certain places, say researchers who studied more than 40 years of weather data from around the world. They focused on temperature differences between daytime highs and nighttime lows. This difference measurement is called the diurnal temperature range, or DTR. Part of the study involved 660 weather stations in the continental United States. At more than 230 of these sites, the average DTR for Saturday, Sunday, and Monday was different from the average DTR for Wednesday, Thursday, and Friday, the researchers found. The difference was small—only several tenths of a Celsius degree—but the pattern was striking enough to make the scientists take notice. In the southwestern U.S., temperature ranges were typically broader on weekends. In the Midwest, weekdays saw larger daily temperature variations. This sort of weekly rise and fall doesn't line up with any natural cycles, the researchers say. Instead, they blame human activities, possibly air pollution from those activities, for these weather effects. For example, tiny particles in the air could affect the amount of cloud cover, which would in turn affect daily temperatures. So, tiny windborne particles from California, generated on weekdays, might first affect weather close to home in the southwest, then later influence midwestern weather. It looks like your weekend weather has a lot do with which way the wind blows and where it comes from.—E. Sohn

Weekend Weather Really Is Different
Weekend Weather Really Is Different








Designed and Powered by HBJamaica.com™