Global Maps

How Hot Is It? All You Need To See Are These Two Maps : The Two-Way The heat wave across much of the nation continues. We could hit 105 degrees on Saturday here in the nation's capital, the National Weather Service says. Washington, D.C., has already tied its record for most consecutive days (eight) with temperatures of 95 degrees or more. And as Wunderground.com writes, "more record-breaking triple-digit heat is expected Friday and Saturday across much of the Midwest and Tennessee Valley." The good news is that things could start to cool in just a few days. But what we want to focus on are some incredible statistics and maps from the National Climatic Data Center. First, look at this image showing the number of places where daily maximum temperature records have been broken so far this month. Then, look at this image showing the number of places where daily maximum temperature records were broken in June. All we can say is, whew! Other numbers about the scorching temperatures: — In the past 30 days, there have been 4,230 such records set.

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Sea Ice Max Continues Downward Trend In September 2012, the ice cap over the Arctic Ocean shrank to its lowest extent on record, about half the size of the average summertime extent from 1979 to 2000. That sea ice minimum continued a long-term trend of diminishing ice cover over the past few decades. During the darkness and bitter cold of Arctic winter, new sea ice forms and older ice re-freezes and grows. According to a NASA analysis, this year’s annual maximum extent was the fifth lowest in the past 35 years. Scientists at the National Snow and Ice Data Center (NSIDC) assert that the Arctic ice maximum occurred on March 15, 2013. The maps above show the Arctic sea ice extents from March 15, 2013 (top) and March 14, 1983 (bottom), an average year for sea ice maximum. The 2013 map was compiled from observations by the Advanced Microwave Scanning Radiometer 2 (AMSR-2) sensor on the Global Change Observation Mission 1st–Water (“Shizuku”) satellite, operated by the Japan Aerospace Exploration Agency (JAXA). Instrument(s):

Extreme Ice Survey | Art meets science. The James Webb Space Telescope 2011 Global Temperatures Nine of the top ten warmest years in the modern meteorological record have occurred since the year 2000. Last year was another one of them, coming in at 9th warmest since 1880. The map above shows temperature anomalies, or changes, by region in 2011; it does not depict absolute temperature. On January 19, 2012, researchers at NASA’s Goddard Institute for Space Studies (GISS) released their annual analysis of global temperatures, noting that Earth’s land and ocean surfaces continue to experience higher temperatures than several decades ago. “We know the planet is absorbing more energy than it is emitting,” said GISS director James Hansen. The difference between 2011 and the warmest year (2010) is 0.22 degrees F (0.12 C). Higher temperatures today are largely sustained by increased concentrations of atmospheric greenhouse gases, especially carbon dioxide. ReferencesNASA (2012, January 19) NASA Finds 2011 Ninth-Warmest Year on Record. Instrument(s): In situ Measurement

Global Warming Effects Map - Effects of Global Warming bulletins-electroniques.com : toute l'actualité technologique internationale en français, en accès libre et gratuit ! Le blog de l'image satellite – CNES Natureza - Bolha de frio no Atlântico Norte desafia aquecimento global Sequência de mapas climáticos mostra persistência do frio no Atlântico Norte (Foto: NOAA) Com o aquecimento global avançando, 2015 tem boas chances de quebrar o recorde de 2014 como ano mais quente da história, mas existe uma região do mundo que desafia essa tendência: uma bolha de frio no Atlântico Norte. Em todos os últimos 12 meses de registro de temperaturas na região logo ao sul da Groenlândia e da Islândia, as temperaturas de superfície registradas ficaram muito abaixo da média histórica, e em alguns casos bateram recordes de frio. O que está acontecendo na região, porém, não é algo que coloque em xeque as previsões de cientistas sobre a mudança climática. Pelo contrário, a queda de temperaturas no Atlântico Norte é até mesmo um fenômeno previsto por climatologistas como consequência da influência do aquecimento global sobre circulação de águas oceânicas. Se algum elemento perturbar esse ciclo, porém, a corrente enfraquece. Tendência permanente?