Average Day By Day Variations Of The Global And Hemispheric Average Lower Tropospheric Temperatures

Här kommer en mycket intressant analys av skillnaderna mellan norra och södra halvklotet vad det gäller ”lower tropospheric temperatures” och hur dessa varier dag för dag och skillnaden mot ”Global average”.

Artikeln finns här:

http://climatesci.org/2008/04/18/average-day-by-day-variations-of-the-global-and-hemispheric-average-lower-tropospheric-temperatures/

Datat finns här:

http://vortex.nsstc.uah.edu/data/msu/t2lt/tltdayac7998_5.2

Average Day By Day Variations Of The Global And Hemispheric Average Lower Tropospheric Temperatures

Roger Pielke Sr. @ 7:00 am

The University of Alabama at Huntsville has a valuable summary of day by day global, and northern and southern hemispheric, average values of the lower tropospheric temperatures.  Since the Earth is at different distances from the Sun during the year, and the two hemispheres have different amounts of land and ocean, this is an interesting analysis in its own, in addition to its use to compute the deviation from the averages at any time of the year.

The entire day by day set of values is at http://vortex.nsstc.uah.ed/data/msu/t2lt/tltdayac7998_5.2 . Here I present just the Julian Day 1 and Julian Day 183 to illustrate the large variations that occur. The data on their website are in units of 0.001K but I have rounded here.

 Julian Day 1

Global Average=  267.8K

Northern Hemisphere Average= 265.6 K

Southern Hemisphere Average = 270.0K

 

 Julian Day 183

Global Average= 270.1

Northern Hemisphere Average=  274.7

Southern Hemisphere Average = 265.6

This is quite an enlightening presentation of data as it shows that the Earth’s lower troposphere goes through a warming and cooling of over 2 K each year.  The variation in the Northern Hemisphere is also larger than the Southern Hemisphere due to the larger fraction of land (a large portion of which is covered with snow in the winter). Also, despite that the Earth is further from the Sun in July than in January, the global average lower tropospheric temperature is higher in July because of the greater fraction of land in the Northern Hemisphere. [also, see More Background Information On Diagnosing Global Warming and Cooling for more discussion on the variation of radiative forcing at the top of the atmosphere during the year].

From the climate perspective, the variation of lower tropospheric temperatures during the year further illustrates why a global average trend in the annual value is not very informative. We need values for months (and seasons) as well for each hemisphere and globally. Then these values should be quantitatively compared with the predictions of the IPCC climate projections.

 

Läs även andra bloggares åsikter om <a href=”http://bloggar.se/om/milj%F6 rel=”tag”>miljö</a>

Etiketter:

3 svar to “Average Day By Day Variations Of The Global And Hemispheric Average Lower Tropospheric Temperatures”

  1. The 800 year lag of carbon compared to temperature « UD/RK Samhälls Debatt Says:

    […] troposphere but it should be warming if Global Warming “theories” are correct!,  Average Day By Day Variations Of The Global And Hemispheric Average Lower Tropospheric Temperatures,  2 miljarder år av temperaturdata!,  Rewriting Temperature History – Time and Time Again!, […]

  2. The world has never seen such freezing heat OR the Blunder with NASA: s GISS Temperature data « UD/RK Samhälls Debatt Says:

    […] troposphere but it should be warming if Global Warming “theories” are correct!,  Average Day By Day Variations Of The Global And Hemispheric Average Lower Tropospheric Temperatures,  2 miljarder år av temperaturdata!,  Rewriting Temperature History – Time and Time Again!, […]

  3. GLOBAL TEMPERATURE TRENDS FROM 2500 B.C. TO 2008 A.D. « UD/RK Samhälls Debatt Says:

    […] boondoggle since the days of Galileo,  1000 år av temperaturdata från Nya Zeeland,  Average Day By Day Variations Of The Global And Hemispheric Average Lower Tropospheric Temperatures,  Our Climate Numbers Are a Big Old Mess,  Open letter to IPCC to renounce its […]

Kommentera

Fyll i dina uppgifter nedan eller klicka på en ikon för att logga in:

WordPress.com Logo

Du kommenterar med ditt WordPress.com-konto. Logga ut /  Ändra )

Google-foto

Du kommenterar med ditt Google-konto. Logga ut /  Ändra )

Twitter-bild

Du kommenterar med ditt Twitter-konto. Logga ut /  Ändra )

Facebook-foto

Du kommenterar med ditt Facebook-konto. Logga ut /  Ändra )

Ansluter till %s


%d bloggare gillar detta: