Image

Observing changes to the annual Northern and Southern Hemisphere temperatures and surface pressure

    AIM

To snap the global temperature ( Kelvin) map every month from AUGUST 2013 to Aug’ 2014 and note how the spatial temperature pattern changes annually.
Here we go.. One of 12

AUGUST 2013

global temp aug 2013
source
http://www.ospo.noaa.gov/data/mspps/np_images/amsua_ts_des.gif

OCTOBER 2013

oct 2013 global temps

Notice the coldest temperatures are in the Antartic for the month of AUGUST.
AUGUST is the last month of winter in the southern hemisphere.

To convert KELVIN to CELSIUS
http://www.metric-conversions.org/temperature/kelvin-to-celsius.htm

From the above map
In August 2013 .The North African latitudes are recording some of the hottest temperatures in the orange band around ~ 300 Kelvin. The converter in the above link estimates the temperature in many parts of nth Africa as 26.85 deg C
That seems quite low?
However shift up only 10 deg kelvin to 310 K and we have a different story!!
The temperature is now 36.85 deg C!! Much hotter.
This infers that the map posted above has a low resolution. It is designed to just roughly show the temperature variation across the globe which is suitable for our purposes of this study. Just looking at general seasonal trends

WHY DOES THE GLOBAL TEMPERATURE SPATIAL PATTERN CHANGE ANNUALLY ?
tilt of the earth

An explanation from Wikopedia
http://en.wikipedia.org/wiki/Season

“The seasons result from the Earth’s axis being tilted to its orbital plane; it deviates by an angle of approximately 23.5 degrees.”

TIME SERIES GRAPH .. COMPARING the NORTHERN and SOUTHERN HEMISPHERE ANNUAL MONTHLY TEMPERATURE
comapring annual SH and NH temperature

diagram of earths inclination to the sun

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18 comments on “Observing changes to the annual Northern and Southern Hemisphere temperatures and surface pressure

  1. PAUL VAUGHAN has completed something similar but much better using animations to show the

    SEASONAL CHANGES of various GLOBAL CLIMATE VARIABLES

    Here are his links

    MSLP. Wind vectors and geopotential height at the Nth and sth poles

    global mslp animation

    Temperature.. Ozone and wind vectors

    Cloud cover

    Net surface solar radiation

  2. Tim Channon from Tallbloke has put the seasonal global MSLP ( mean sea level pressure) in a sequence of the 12 months of the year so you can see the changes in pressure annually in poster format’

    Here is the PDF link and the link to the source of discussion

    http://tallbloke.files.wordpress.com/2013/09/jst-sst-seq.pdf

    thread
    http://tallbloke.wordpress.com/2013/09/12/paul-hudson-rare-solar-cycle-has-cold-implications-for-uk-climate/comment-page-1/#comment-59690

  3. FEBRUARY 11TH 2014

    Here is a snap shot of extremes of hot and cold on this day . The last few weeks of Australian summer
    Notice that South Australia is recording the hottest temperatures on the globe and has recently broken some heat records for the number of days in summer over 40 deg C
    I think there has been a blocking or stalled high in the Tasman sea directing northerlies from the record hot interior over many parts of South Australia

    11th feb  2014 heat and cold extremes global

    source link
    http://www.wunderground.com/climate/extremes.asp

  4. ENGLAND

    Daily Central England Temperature Winter Anomalies (21 December – 20 March)
    by ZETMAN
    http://xmetman.wordpress.com/author/xmetman/

    http://xmetman.wordpress.com/2014/03/26/central-england-temperature-winter-201314/

    I prefer the seasons as they are split up by the (approximate) dates of the solstices, so winter does start on the 21st of December, and last to the 20th of March each year. It’s no more difficult to calculate than the ‘meteorological’ one that comprises the months of December, January and February [DJF]. Either way the winter of 2013/14 was mild, using the DJF it was 10th mildest since 1659 and under the classic definition of winter is was the 7th mildest since 1772 with a mean temperature of 6.35°C and an anomaly of +1.55°C. You might also notice that I have now started to use the 1981-2010 long-term average to calculate the anomalies. So 7th mildest but remarkably only the mildest since the winter of 2006/7 which was even milder with an anomaly of +1.65°C.

  5. Satellite Measured Temperatures for March 2014

    http://www.accuweather.com/en/weather-blogs/climatechange/satellite-measured-temperature-4/25387013

    March 2014 satellite temperature anomalies

    Extracts
    “Note how cold it was over the eastern two-thirds of Canada and the U.S. and the unusual warmth from eastern Europe into much of Asia.

    Actual RSS temperature anomalies for March 2014………..

    Global (-70 S. to 82.5 N.) : +.214 C. which is the warmest March since 2010 and the 12th warmest March in the satellite era going back to 1979.

    USA : -.693 C. which makes March 2014 the 8th coldest March in the satellite record for the USA

  6. GLOBAL LAND and SEA TEMPERATURE ANOMALY 2014 TIME SERIES
    ———————————————————-
    About an ~ 3 yr full cycle on this graph with ~18 month phases

    ENSO perhaps?

    Global land land temp anomlay time series

    source

  7. I love this graph by XMETMAN because it shows the difference in temperature in Nth and sth hemispheres . For each day of the year.( Annual temperature cycle)
    I particularly like the point of cross over which apparently is the equinox
    ~March 21
    and
    ~NOV 1st
    and the earth is warmest from ~ 9th June to ~ September 1st
    Nth hemisphere tempspeak in Late JULY and first week of August
    Sth Hemisphere max temp peaks the first few weeks in January

    ( if l have interpreted XMETMANS data correctly)

    CLICK ON THE GRAPH TO LOAD THE FULL SIZED ORIGINAL IMAGE..
    Estimated Global Temperatures for 1963

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