No trends in precip anywhere from 1850

Posted: December 4, 2015 by tallbloke in Analysis, Dataset, solar system dynamics
Tags: ,

Nice day

Nice day


From the dept of unsexy climate headlines we get news that there’s no news so far as precipitation is concerned. A new paper which examines a HUUUUGE number of records worldwide finds that there’s no trends anywhere of any significance from 1850. So much for dire warnings of increased droughts and floods due to extra CO2 which DO grab the headlines.

Changes in annual precipitation over the Earth’s land mass excluding Antarctica from the 18th century to 2013

 
Highlights

Over 1½ million monthly precipitation totals observed at 1000 stations in 114 countries analysed.

Data record much longer than 3 recent conflicting studies that analysed a few decades of data.

No substantial difference found for stations located at northern, tropical and southern latitudes.

No substantial difference found for stations experiencing dry, moderate and wet climates.

No significant global precipitation change from 1850 to present.

 

Summary

Precipitation measurements made at nearly 1000 stations located in 114 countries were studied. Each station had at least 100 years of observations resulting in a dataset comprising over 1½ million monthly precipitation amounts. Data for some stations extend back to the 1700s although most of the data exist for the period after 1850. The total annual precipitation was found if all monthly data in a given year were present. The percentage annual precipitation change relative to 1961–90 was plotted for 6 continents; as well as for stations at different latitudes and those experiencing low, moderate and high annual precipitation totals. The trends for precipitation change together with their 95% confidence intervals were found for various periods of time. Most trends exhibited no clear precipitation change. The global changes in precipitation over the Earth’s land mass excluding Antarctica relative to 1961–90 were estimated to be: −1.2 ± 1.7, 2.6 ± 2.5 and −5.4 ± 8.1% per century for the periods 1850–2000, 1900–2000 and 1950–2000, respectively. A change of 1% per century corresponds to a precipitation change of 0.09 mm/year.

 

Comments
  1. karabar says:

    Reblogged this on Tamar Conversations and commented:
    The extreme weather hoax is just another hoax.

  2. karabar says:

    Reblogged on Tamar Conversations.

  3. oldbrew says:

    TB: added a pic to brighten it up🙂

  4. tchannon says:

    Shocked, totally shocked.

    Bothersome is getting traction on Huge earthquake in Chile, no-one hurt. Ever thus.

  5. thefordprefect says:

    Theres a definite trend in UK precipitation according to the met office.(upwards!).

  6. tallbloke says:

    Thanks Ford. So over a century, UK rainfall varies a few inches either side of four feet a year.
    Colour me unexcited.

  7. hunter says:

    This illustrates the difference between “Anthropogenic Climate Change” and “Anthropomorphic Climate Change”.
    A real human caused problem will be demonstrated by clear evidence. A projection of human wishes, dreams and nightmares will have no evidence in the real world.

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