posted on Mar, 9 2013 @ 04:42 AM
Attempts of standardized temperature measurement have been reported as early as 170 AD by Claudius Galenus. The modern scientific field has its
origins in the works by Florentine scientists in the 17th century. Early devices to measure temperature were called thermoscopes. The first sealed
thermometer was constructed in 1641 by the Grand Duke of Toscani, Ferdinand II. The development of today's thermometers and temperature scales
began in the early 18th century, when Gabriel Fahrenheit adapted a thermometer using mercury and a scale both developed by Ole Christensen Rømer.
Fahrenheit's scale is still in use, alongside the Celsius scale and the Kelvin scale.
Meteorological observatories measure the temperature and humidity of the air near the surface of the Earth usually using thermometers placed in a
Stevenson screen, a standardized well-ventilated white-painted instrument shelter. The thermometers should be positioned 1.25–2 m above the ground.
Important note. Details of this setup are defined by the World Meteorological Organization (WMO).
The true daily mean, obtained from a thermograph, is approximated by the mean of 24 hourly readings (which is not the same as the mean of the daily
minimum and maximum readings).
The world's average surface air temperature is about 15 °C.
Because of the extreme temperatures that we had past year(s) I thought is appropriate to open a thread that can give a path of some of the main cause
of such events taking place and especially their consequences on short and long term.
Without bringing in equation the Global Warming as consequence of human activity.
Because I have a feeling that this year we might experience temperatures unseen until now on planet Earth in places where it shouldn't be.
he summer 2012 North American heat wave is a heat wave which has led to more than 82 heat-related deaths across the United States and Canada.. An
additional twenty-two lives were lost in the resultant June 2012 North American derecho. This long-lived, straight-line wind and its thunderstorms cut
electrical power to 3.7 million customers. Over 500,000 were still without power on July 6, as the heat wave continued. Temperatures generally
decreased somewhat the week of July 9 in the east, but the high pressure shifted to the west, causing the core of the hot weather to the build in
the Mountain States and the southwest U. S. shifting eastwards again by mid-July. As of early August, the core of the heat remains over the Southern
ypically, climate change is described in terms of average changes in temperature or precipitation, but most of the social and economic costs
associated with climate change will result from shifts in the frequency and severity of extreme events.1 This fact is illustrated by a large number of
costly weather disasters in 2010, which tied 2005 as the warmest year globally since 1880.2 Incidentally, both years were noted for exceptionally
damaging weather events, such as Hurricane Katrina in 2005 and the deadly Russian heat wave in 2010. Other remarkable events of 2010 include
Pakistan’s biggest flood, Canada’s warmest year, and Southwest Australia’s driest year. 2011 continued in similar form, with “biblical”
flooding in Australia, the second hottest summer in U.S. history, devastating drought and wildfires in Texas, New Mexico and Arizona as well as
historic flooding in North Dakota, the Lower Mississippi and in the Northeast.3
WORCESTER, England — Britons may remember 2012 as the year the weather spun off its rails in a chaotic concoction of drought, deluge and
flooding, but the unpredictability of it all turns out to have been all too predictable: Around the world, extreme has become the new commonplace.
Especially lately. China is enduring its coldest winter in nearly 30 years. Brazil is in the grip of a dreadful heat spell. Eastern Russia is so
freezing — minus 50 degrees Fahrenheit, and counting — that the traffic lights recently stopped working in the city of Yakutsk.
Bush fires are raging across Australia, fueled by a record-shattering heat wave. Pakistan was inundated by unexpected flooding in September. A
vicious storm bringing rain, snow and floods just struck the Middle East. And in the United States, scientists confirmed this week what people could
have figured out simply by going outside: last year was the hottest since records began.
“Each year we have extreme weather, but it’s unusual to have so many extreme events around the world at once,” said Omar Baddour, chief of the
data management applications division at the World Meteorological Organization, in Geneva. “The heat wave in Australia; the flooding in the U.K.,
and most recently the flooding and extensive snowstorm in the Middle East — it’s already a big year in terms of extreme weather calamity.”
With various effects for Life and not only.
Extreme Temperatures that you might experience in the area where you live.