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Wednesday, October 14, 2020

Higgenbotton & Symeonakis, (2020) -- More CO2 is 'Greening' Africa since 1982

 Higginbottom, T.P. and
Symeonakis, E.

2020

Identifying ecosystem function shifts
in Africa using breakpoint analysis
of long-term NDVI and RUE data.


Remote Sensing 12: 1894,
doi:10.3390/rs12111894.


FULL  SUMMARY  HERE:
  http://www.co2science.org/articles/V23/oct/a4.php


MY  SHORT  SUMMARY  FOLLOWS:
Since 1980, the population of Africa has grown by approximately 850 million persons, which has has "transform[ed] the intensity and distribution of land use activities, such as, fuelwood harvesting, animal husbandry and farming."
Climate alarmists claim CO2-caused global warming should be wreaking havoc on African flora.  In reality, the continent's vegetation has been increasing  over the past three and a half decades.

African vegetative productivity has reached the highest values ever observed in the satellite record. And this 'greening/ of Africa has largely been caused by rising atmospheric CO2!

The green shading in the chart below reveals the significant increase of African vegetation since 1982 -- "there was no continental (or hemispheric) shift towards negative trends in either RUE or NDVI and the overall trend continues to be of vegetation greening."

Figure 1.
Spatial distribution of significant trends in Normalized Difference Vegetation Index (NDVI) and Rain Use Efficiency (RUE) data in Africa over the period 1982-2015.