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Climate Quiz



Climate quiz:

Note: The IPCC is considered the bible of climate by those concerned with climate.


1. How much has the Earth warmed since the start of the industrial age (per IPCC)?

2. What percentage of annual CO2 emissions are from man? (per NASA)

3. What percentage of the greenhouse effect is from CO2? (per AMS)

4. How much have hurricanes increased (per IPCC)?

5.How much have storms increased (per IPCC)?

6. How much has sea level increase accelerated (per IPCC)?

7. How much have floods increased (per IPCC)?

8. How much have droughts increased (per IPCC)




1. 0.78 degree C to 2012.

“Using Had-CRUT4 and its uncertainty estimates, the warming from 1850–1900 to 1986–2005 (reference period for the modelling chapters and Annex I) is 0.61 [0.55 to 0.67]  C (90% confidence interval), and the warming from 1850–1900 to 2003–2012 (the most recent decade) is 0.78 [0.72 to 0.85]  C (Supplementary Material 2.SM.4.3.3).”

Pg. 209 of  https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf


2.  Man emits about 6% of total emissions:

Add the numbers on this NASA diagram: https://earthobservatory.nasa.gov/features/CarbonCycle/page1.php

3. CO2 causes only about 26-32% of the greenhouse effect. H2O causes 60-75%.:


Wikipedia’s source:  Table 3 of:  Bulletin of the American Meteorological Society  Vol. 78, No. 2, February 1997 -



4. We do not have enough data to say that hurricanes have increased:

“Confidence remains low for long-term (centennial) changes in tropical cyclone activity, after accounting for past changes in observing capabilities.”

pg 178 of  https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf


5.  We do not have enough data to say that storms have increased:

“Confidence in large-scale trends in storminess or storminess proxies over the last century is low owing to inconsistencies between studies or lack of long-term data in some parts of the world (particularly in the SH). {2.6.4}”

pg 178 of  https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf


6.  Sea level rise acceleration: (Note that sea levels have been rising since the end of the last ice age - the issue is whether it is increasing faster.)

“When a 60-year oscillation is modeled along with an acceleration term, the estimated acceleration in GMSL since 1900 ranges from: 0.000 [–0.002 to 0.002] mm yr–2 in the Ray and Douglas (2011) record, 0.013 [0.007 to 0.019] mm yr–2 in the Jevrejeva et al. (2008) record, and 0.012 [0.009 to 0.015] mm yr–2 in the Church and White (2011) record. Thus, while there is more disagreement on the value of a 20th century acceleration in GMSL when accounting for multi-decadal fluctuations, two out of three records still indicate a significant positive value. The trend in GMSL observed since 1993, however, is not significantly larger than the estimate of 18-year trends in previous decades (e.g., 1920–1950). “  

Page 306 of  https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf


7. How much have floods increased (per IPCC)?

“AR4 WGI Chapter 3 (Trenberth et al., 2007) did not assess changes in floods but AR4 WGII concluded that there was not a general global trend in the incidence of floods (Kundzewicz et al., 2007). SREX went further to suggest that there was low agreement and thus low confidence at the global scale regarding changes in the magnitude or frequency of floods or even the sign of changes.”

pg 230 of https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf


8. How much have droughts increased

“Confidence is low for a global-scale observed trend in drought or dryness (lack of rainfall) since the middle of the 20th century, owing to lack of direct observations, methodological uncertainties and geographical inconsistencies in the trends.”

pg 178 of  https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf