Jim Church

Hat tip Ole Humlum.

GLOBAL SURFACE AIR TEMPERATURE AUGUST 2021

Global surface temperature status August 2021 compared to the average of August during the previous 10 years (diagram 1-3), using satellite data by AIRS (https://airs.jpl.nasa.gov/), obtained from the GISS data portal (https://data.giss.nasa.gov/gistemp/). Green-yellow-red colours indicate areas with higher temperature than the 10-year average, while blue colours indicate lower than average temperatures.

Diagram 4-6: Global surface temperature August 2021 compared to August 2020, using satellite data published by AIRS (see above). Variations in monthly temperature from one year to the next has no tangible climatic importance but may nevertheless be interesting to study.

See more on
http://www.climate4you.com/Text/Climate4you_August_2021.pdf
and http://www.climate4you.com/

From the article:

1: Observed average global air temperature change last 30 years is about +0.17^oC per decade. If this change rate remains stable, additional average global air temperature increase by year 2100 will be about +1.3^oC.

2: Tide gauges along coasts indicate a typical global sea level increase of about 1-2 mm/yr. Coastal sea level change rate last 100 year has essentially been stable, without recent acceleration. If change rate remains stable, global sea level at coasts will typically increase 8-16 cm by year 2100, although many locations in regions affected by glaciation 20,000 ago, will experience a relative sea level drop.

3: Since 2004 the global oceans above 1900 m depth on average have warmed about 0.07^oC. The maximum warming (about 0.2^oC, 0-100 m depth) mainly affects oceans near Equator, where the incoming solar radiation is at maximum.

4: Changes in atmospheric CO₂ follow changes in global air temperature. Changes in global air temperature follow changes in ocean surface temperature.

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