by: Michael Buresh Updated:
July 12, 2017 - Spring was hot & mostly dry but a wet late May through June has led to a bit of a downturn in temps. through June. We avg. 82 90-degree days each year in Jax & have had 37 so far - just a bit above the avg. through July 11th of 33 days. So far @ JIA:
April: 3 (1)
May: 13 (8)
June: 10 (17)
July through the 11th: 11 (24 for entire month)
The map below from the Iowa Environmental Mesonet shows the number of 90 degree days across the U.S. through July 4th vs. avg:
As part of an ongoing joint project between UAH, NOAA and NASA, Christy and Dr. Roy Spencer, an ESSC principal scientist, use data gathered by advanced microwave sounding units on NOAA and NASA satellites to get accurate temperature readings for almost all regions of the Earth. This includes remote desert, ocean and rain forest areas where reliable climate data are not otherwise available.
The satellite-based instruments measure the temperature of the atmosphere from the surface up to an altitude of about eight kilometers above sea level.
Global Temperature Report: June 2017
Global climate trend since Nov. 16, 1978: +0.12 C per decade
June temperatures (preliminary)
Global composite temp.: +0.21 C (about 0.38 degrees Fahrenheit) above 30-year average for June.
Northern Hemisphere: +0.32 C (about 0.58 degrees Fahrenheit) above 30-year average for June.
Southern Hemisphere: +0.09 C (about 0.16 degrees Fahrenheit) above 30-year average for June.
Tropics: +0.39 C (about 0.70 degrees Fahrenheit) above 30-year average for June.
May temperatures (revised):
Global Composite: +0.44 C above 30-year average
Northern Hemisphere: +0.39 C above 30-year average
Southern Hemisphere: +0.49 C above 30-year average
Tropics: +0.41 C above 30-year average
(All temperature anomalies are based on a 30-year average (1981-2010) for the month reported.)
Notes on data released July 5, 2017:
Cooling in the Southern Hemisphere led to an average global temperature drop of about two tenths of a degree Celsius in June, according to Dr. John Christy, director of the Earth System Science Center at The University of Alabama in Huntsville. The global average of 0.21 C warmer than seasonal norms was the coolest value since July 2015 and the start of the 2015-16 El Niño Pacific Ocean warming event.
Compared to seasonal norms, the coldest place on Earth in June was in the eastern Antarctic near Dome C. Temperatures there averaged 4.43 C (about 7.97 degrees Fahrenheit) colder than seasonal norms.
Compared to seasonal norms, the warmest place on Earth in June was near the town of Inarigda in central Russia. Temperatures there averaged 3.07 C (about 5.53 degrees Fahrenheit) warmer than seasonal norms.
Night skies for July/early Aug., courtesy Sky and Telescope:
July 13, 14 (dawn): Venus is 3° to the upper left of Aldebaran, the brightest star in Taurus.
July 20 (dawn): Find the slim crescent Moon about 3° or 4° to the lower right of Venus.
July 24 (dusk): Super thin crescent Moon cuts the sky 5° lower right of Mercury, very low in the west soon after sunset.
July 27 (morning): The modest but long-lasting Delta Aquariid meteor shower peaks.
July 28 (dawn): A thick waxing crescent Moon hangs 3° above Jupiter. Blue-white Spica twinkles about 8° to their left.
August 2 (evening): Golden Saturn gleams about 3° or 4° lower left of the waxing gibbous Moon.
August 7–8 (evening & night): A shallow partial lunar eclipse is visible from Europe, Africa, Asia, and Australia.
August 11–13 (night): The Perseid meteor shower peaks on August 12th. The waning gibbous Moon rises before midnight, however, so viewing conditions are not ideal this year.
Full Moon July 9, 12:07 a.m. EDT (known as Buck Moon; also Thunder Moon)
Last Quarter July 16, 3:26 p.m. EDT
New Moon July 23, 5:46 a.m. EDT
First Quarter July 30, 11:23 a.m. EDT
EARTH GAUGE (NEEF): "Citizen Science" can be a Walk in the Park, Sarah Blount:
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"Buresh Blog": 90 degree days so far... June global temps. - July 12th
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