However, the same forecasts indicate that although they will more intense they will happen less often. Both phenomena were shown at the Intergovernmental Panel on Climate Change ( IPCC) as a clear consequence of climate change and as a confirmation of the predictions included in its Fifth Evaluation Report (AR5), which was the base of the work of the COP 21, in December 2015 in Paris.Īccording to the forecasting models, the percentage of violent cyclones will increase by 2%-11% globally in the next four decades. This reduction in relative humidity leads the supercooled droplets to evaporate and disappear, leaving behind a hole.Two years later, in October 2015, Hurricane Patricia broke the sustained speed record held by Haiyan on the Mexican shore, being registered at the National Hurricane Center ( NHC) as the most intense hurricane ever registered in the Western hemisphere. When a plane flies through the cloud layer, local zones of low pressure along the wing and propeller allow the air to expand and cool, triggering the formation of ice crystals. These ice crystals grow at the expense of the cloud's "supercooled" water droplets (small liquid water droplets whose temperatures are below freezing) by pulling moisture out of the air. Hole punch clouds develop inside layers of altocumulus clouds when airplanes pass through them. While your imagination may run wild, the answer couldn't be less fanciful. Not as Extraterrestrial as You Might Think Once you spot one, you're sure to spend many a sleepless night wondering just who or what cleared that perfectly oval-shaped hole smack-dab in the middle of an entire cloud. Hole punch clouds may be one of the least odd named on this list, but they're nonetheless vexing. Elmo's Fire, this light is blue because of the combination of nitrogen and oxygen in our air. When this discharge happens, air molecules essentially tear apart, and as a result, emit light. When this difference in charge between air and a charged object gets large enough, the charged object will discharge its electrical energy. It occurs when a thunderstorm creates an electrically charged atmosphere and air's electrons group together creating an imbalance in electrical charge (ionization). It's actually what's called a corona discharge. Elmo's fire is likened to lightning and fire, yet it isn't either. Elmo's Fire has an eerie, almost ghost-like appearance. Imagine looking outside during a thunderstorm to see a bluish-white orb of light appear out of nowhere and "sit" at the end of tall, pointed structures (such as lightning rods, building spires, ship masts, and airplane wings) St. Once a balloon travels high enough up in the sky, its inside pressure becomes greater than that of the surrounding air and it bursts (this typically happens at altitudes exceeding 100,000 feet), scattering debris on the ground below. In an attempt to make this debris less mysterious, NOAA now labels its balloons with the words "Harmless Weather Instrument."ġ886 drawing of St. Weather balloons aren't just mistaken for questionable aircraft while in flight, but also when on the ground. Balloons travel from Earth's surface up to a height of about 20 miles collecting weather data (like air pressure, temperature, humidity, and wind) in the middle and upper portions of the atmosphere and relaying this information back to weather forecasters on the ground to be used as upper-air data. In all fairness, weather balloons are high-altitude, spherically-shaped objects that appear shiny when lit by the sun - a description that fits that of unidentified flying objects - except that weather balloons couldn't be more routine. NOAA's National Weather Service launches them everyday, twice daily. Thanks largely to the 1947 Roswell incident, they've become objects of UFO sighting claims and cover-ups. Weather balloons are infamous in popular culture, but unfortunately not for their weather monitoring purposes.
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