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|Weather quiz Wednesday: Remote sensing of the atmosphere|
Take the quick 10 question quiz to test your skills on remote sensing. CLEVELAND, Ohio -- Remote sensing is one of the most important tools that meteorologists and all kinds of scientists use to view atmospheric, oceanic, and land use changes. But how much do you understand about how it works? Take the quiz to find out! Answers Explained: 1.The first satellite launched into space was Sputnik I on October 4, 1957. 2. GOES is a Geostationary Operational Environmental Satellite which stays in one area with respect to Earth, meaning it moves at exactly the same speed as Earth. 3. As above, geostationary means the satellite does not move with respect to Earth as it rotates. 4. POES (or a polar-orbiting environmental satellite) rounds the Earth 14 times in one day. 5. The benefits of infrared images are that they can tell the difference between high clouds and low clouds, whereas on a visible image it's hard to decipher the difference. Also, visible images are only available during the daytime in that location, infrared images are available 24/7. 6. Water vapor is the gaseous form of water, and is very important for meteorologists to see where heavy moisture is available to support storm development. 7. Imagine the atmosphere is a moist towel, and a bucket is a column of air. Precipitable water would be the depth in that bucket if all the water in that towel were squeezed out (all the water vapor in the air precipitated out by rain). 8. Satellites both ingest surface observations of wind speeds (for surface winds) and track the movement of clouds for wind speeds higher in the atmosphere. 9. ASOS stands for Automated Surface Observing Systems and is an automated device which takes temperature, dew point, humidity, cloud cover, any many more measurements sometimes every minute. 10. Remote sensing has many applications, not just for meteorology. It is important for climatologists, oceanographers, geologists, almost every science application. Keep checking cleveland.com/weather for twice daily weather updates for Northeast Ohio, and don't forget to submit any weather questions you may have! Kelly Reardon is cleveland.com's meteorologist. Please follow me on Facebook and Twitter @kreardon0818.
2 points by The Plain Dealer | Precipitation Satellite Atmosphere Water vapor Sputnik 1 CLOUD Humidity Climate
|Is winter of 2016-17 toast, or just on snow break?|
With a boost from warm nights, this almost certainly will end up among the 10 warmest.
-2 points by The Philadelphia Inquirer | Temperature New Hampshire New England Heat Philadelphia Fahrenheit Water vapor Defamation
|Climate change fueled deadly Louisiana rainstorm|
The nation's worst natural disaster in 4 years was given a clear boost by man-made climate change, a report says.
313 points by USA Today | Weather Rain Water Water vapor Precipitation Tropical cyclone Humidity Greenhouse gas
|The future of winter: Warmth aside, snow remains in forecast rest of the century|
Winters have trended warmer, snowstorms bigger.
-2 points by The Philadelphia Inquirer | Snow Temperature Ice Precipitation Water Water vapor Fahrenheit Winter
|Akron could break 70-degree temperature record today, previously set in 1954: Weather forecast|
Akron is forecasted to reach 72 degrees today, 2 degrees warmer than the record. AKRON, Ohio - It's going to feel like September in Akron today. We are most definitely going to break the 70-degree record high, previously set in 1954, by at least 2 degrees. That's right, 72 degrees and it's almost Thanksgiving. Model forecast of temperatures today.Kelly Reardon, cleveland.com What's the weather for Thanksgiving Day in Northeast Ohio? However, the warm weather is not going to stick around; Saturday temperatures will dip into the 30s. Otherwise, it's looking nice, mostly sunny, with calm winds. High temperature: 72 degrees (2 p.m.) Low temperature: 48 degrees (6 a.m.), 45 degree wind chill Dew point: 46 degrees Precipitation chances: near zero Humidity: 50 percent Wind conditions: 14 mph - Sunrise: 7:18 a.m. Sunset: 5:04 p.m. - The How: A strong ridge (elongated area) of high pressure will bring in unseasonably warm temperatures to Northeast Ohio. High pressure causes clockwise rotation of air around its center, and since it's to the south, this will bring in warmer air originating from the Gulf of Mexico. Mean sea-level pressure forecast for today.Kelly Reardon, cleveland.com A very dry air mass is sitting over the entire Great Lakes region, keeping rain chances near zero and cloud cover very low - meaning sunny skies are ahead. A significant cold front is pushing its way east on Saturday, drastically reducing temperatures to the 30s, and bringing in some chances of light snow showers. Hey Northeast Ohio, get ready for the first snowfall of the season Keep checking cleveland.com/weather for twice daily weather updates for Northeast Ohio, and don't forget to submit any weather questions you may have! Kelly Reardon is cleveland.com's meteorologist. Please follow me on Facebook and Twitter @kreardon0818.
1 points by The Plain Dealer | Precipitation Weather Snow Meteorology Water vapor Gas Humidity Degrees of freedom
|Highs in the low 60s, no chances of rain: Akron weather forecast|
Get ready for a beautiful day in Akron! AKRON, Ohio - It's going to be a beautiful day in Akron today! Temperatures will start in the upper 30s but will quickly warm to 62 degrees in the afternoon. You also get to look forward to mostly sunny skies, and therefore no rain chances. Model forecast of temperatures today.Kelly Reardon, cleveland.com Take the nice weather in while you can, because this weekend there's going to be some snow showers causing up to 3 inches of accumulation. Wintry mix for Northeast Ohio, up to 3 inches of snow in some areas: Working for your weekend forecast High temperature: 62 degrees (3 p.m.) Low temperature: 38 degrees (5 - 6 a.m.) Dew point: 41 degrees Precipitation chances: near zero Humidity: 60 percent Wind conditions: 9 mph - Sunrise: 7:17 a.m. Sunset: 5:05 p.m. - The How: High pressure is back in control of Northeast Ohio weather today, leading to near zero rain chances and mostly sunny skies. High pressure causes sinking motion in the atmosphere which dries air out significantly, making it very stable. Since rain showers need instability and moisture to form, rain chances are low. Keep checking cleveland.com/weather for twice daily weather updates for Northeast Ohio, and don't forget to submit any weather questions you may have! Kelly Reardon is cleveland.com's meteorologist. Please follow me on Facebook and Twitter @kreardon0818.
-1 points by The Plain Dealer | Precipitation Water vapor Precipitation Water Atmosphere Rain Gas Humidity
|Mostly sunny skies, temperatures reaching 60 degrees: Cleveland weather forecast|
Get ready for a beautiful day in Cleveland! CLEVELAND, Ohio - It's finally Thursday, Cleveland! And what a beautiful day ahead: temperatures reaching 60 degrees, mostly sunny skies, and no chances of rain. Model forecast of temperatures today.Kelly Reardon, cleveland.com Make sure to enjoy the nice, dry weather because this weekend there's a good chance of snow showers across Northeast Ohio. Wintry mix for Northeast Ohio, up to 3 inches of snow in some areas: Working for your weekend forecast High temperature: 60 degrees (2 - 3 p.m.) Low temperature: 42 degrees (5 - 7 a.m.), 39 degree wind chill Dew point: 43 degrees Precipitation chance: near zero Humidity: 60 percent Wind conditions: 13 mph - Sunrise: 7:18 a.m. Sunset: 5:05 p.m. - The How: High pressure is back in control of Northeast Ohio weather today, leading to near zero rain chances and mostly sunny skies. High pressure causes sinking motion in the atmosphere which dries air out significantly, making it very stable. Since rain showers need instability and moisture to form, rain chances are low. Keep checking cleveland.com/weather for twice daily weather updates for Northeast Ohio, and don't forget to submit any weather questions you may have! Kelly Reardon is cleveland.com's meteorologist. Please follow me on Facebook and Twitter @kreardon0818.
-1 points by The Plain Dealer | Precipitation Water Water vapor Gas Precipitation Atmosphere Weather Rain
|Watch NASA fire up Mars mission booster rockets in slow motion (VIDEO)|
NASA has fired up its 6,000 degree Fahrenheit turbo boosters that engineers hope will one day power the largest rocket ever built and carry astronauts on far-reaching space missions. Read Full Article at RT.com
304 points by Russia Today | NASA Spacecraft Mars Space exploration Rocket Spaceflight Human spaceflight Water vapor
|What is dew, exactly? How does it form? Reader's questions answered|
Meteorologist Kelly Reardon explains what dew is, and how it forms. CLEVELAND, Ohio - It's fall, which means the mornings are cool. And we're all waking up to a glistening layer of water over our lawns and cars. We get that it's dew, but how exactly does it form? A cleveland.com reader (or at least the 3-year-old daughter of a cleveland.com reader) posed the question. Understanding dew point temperature First, it's important to understand what "dew point temperature" is. This is the temperature air must cool to in order for saturation to occur. At saturation point for that specific temperature and pressure, the air holds as much moisture as possible. Therefore water starts to condensate, forming tiny droplets. The higher the dew point, the higher the moisture in the air, the easier it is for condensation to occur. That's why humidity comfort levels are based on dew point. Also, the higher the dew point, the less the air has to cool to reach it. Dew point comfort scale.Kelly Reardon, cleveland.com Dew point image.Kelly Reardon, cleveland.com The lower the dew point, the lower the humidity, and the more comfortable it'll feel outside. What is dew point? Is it measured or calculated? Reader's questions answered (video) Formation of dew Dew usually forms the night following a warm day and will stick around until early the next morning. Why a warm day? The warmer air is, the larger the capacity for it to hold moisture. So, the warmer the air, the more moisture, or water vapor, there is. Overnight, the Earth radiates heat from the ground into the air. As the Earth radiates this heat, the ground cools. As the ground cools, it cools the layer of air closest to the surface. Basically, the same way your stove heats a pot. On a clear night, as the Earth gives off radiation the surface, and the air close to the surface, will cool significantly, dropping to its dew point.Kelly Reardon, cleveland.com As this thin layer cools, it will eventually reach its dew point. Once the dew point is reached, the air will condensate. Since blades of grass are right on the ground, they create a perfect surface for the water to condensate onto. The air closest to the ground will cool to its dew point much faster than the air 10 or so feet up (where temperature readings are taken), since the cooling is happening from the ground up. So, the air farther from the ground will reach its dew point sometime right before sunrise, when the air is at its coolest. The air closest to the ground will reach its dew point much quicker, so dew can actually form overnight. The exact time depends on the temperature and moisture conditions of the atmosphere and soil. Conditions of formation Dew is less likely to form on cloudy nights, because clouds act like blankets for heat. With clouds, this heat cannot escape, and is instead re-radiated, or reflected, off the clouds and back to the surface. Since the air, and therefore the surface, will stay warmer, it is harder for it to cool to its dew point. On a cloudy night, as the Earth radiates heat, the clouds will reflect it back to the surface, lowering the amount the ground and air above it cools, making it harder to reach its dew point.Kelly Reardon, cleveland.com How come some days there's more dew than others? Light winds are one factor. Light winds reduce dew because they prevent the moist air at the surface from mixing with the drier air above, higher in the atmosphere. Stronger winds would mix these two air masses together, therefore reducing the overall moisture available to condensate at the surface. The soil moisture is another factor. The moister the soil, the heavier the dew will be. This will happen when it's been raining for a couple of days. Very dry regions that haven't seen rain in over a week are much less likely to have dew formation. Soil moisture anomaly graph (difference from average). The drier the soil, the harder it is for dew to form.National Oceanic and Atmospheric Administration Why does dew form on only some surfaces? Some surfaces have a tendency to stay warmer overnight -- the street, for example, or sidewalks. Concrete tends to hold heat for long amounts of time. So even at night after a warm day, the concrete will still be warm. Therefore, the air above it will not cool to its dew point in order to form dew. Dew will only form on surfaces that cool relatively quickly. Why is this important? Apart from the annoyance of having to clean off your car in the morning, dew can actually significantly impact agriculture. Dew makes soil very moist, decreasing the amount of evaporation from the soil. Dew can also make mowing a lawn much more difficult because the grass will tend to stick together in large clumps. Keep checking cleveland.com/weather for twice daily weather updates for Northeast Ohio, and don't forget to submit any weather questions you may have! Kelly Reardon is cleveland.com's meteorologist. Please follow me on Facebook and Twitter @kreardon0818.
4 points by The Plain Dealer | Dew point Water vapor Humidity Psychrometrics Relative humidity Fog Saturation Precipitation