Category Archives: Climate

Internal climate variability dominates precipitation trends

Udit Bhatia & Auroop Ratan Ganguly. Precipitation extremes and depth-duration-frequency under internal climate variability, Scientific Report, volume 9, 9112, 2019.

Natural climate variability, captured through multiple initial condition ensembles, may be comparable to the variability caused by knowledge gaps in future emissions trajectories and in the physical science basis, especially at adaptation-relevant scales and projection horizons. The relations to chaos theory, including sensitivity to initial conditions, have caused the resulting variability in projections to be viewed as the irreducible uncertainty component of climate. The multiplier effect of ensembles from emissions-trajectories, multiple-models and initial-conditions contribute to the challenge. We show that ignoring this variability results in underestimation of precipitation extremes return periods leading to maladaptation. However, we show that concatenating initial-condition ensembles results in reduction of hydroclimate uncertainty. We show how this reduced uncertainty in precipitation extremes percolates to adaptation-relevant-Depth-Duration Frequency curves. Hence, generation of additional initial condition ensembles therefore no longer needs to be viewed as an uncertainty explosion problem but as a solution that can lead to uncertainty reduction in assessment of extremes.

Consult reliable, qualified experts who understand historical climate data when making claims about climate

Climate is average weather over a long period of time (e.g. 30 years)

“Climate experts have informed us that three days of warm weather in Greenland last month is climate.” click here

Here is a real climate crisis…

“Unlike the completely imaginary climate crisis of 2019, there was a very real climate crisis on this date in 1930.” click here

House Climate Crisis Committee is out of touch with climate reality

“The House Climate Crisis Committee held their first public meeting here in Boulder today.  Temperature is 80 degrees, and Boulder is the greenest anyone has ever seen it this time of year. The Governor declared a “climate crisis” today – after the best ski season and the coolest, greenest summer on record. He wants the state to go 100% renewable energy, which would make it impossible for anyone to get to the ski areas.” click here

Heat waves are not related to carbon dioxide in the atmosphere

“hottest on record” claims are not meaningful

“These ludicrous headlines by these charlatans often say “hottest on record” or “hottest since records began” without ever saying when that was, even though any records complete and accurate enough to even pretend they are meaningful, by any stretch of the imagination (and these charlatans have quite the imaginations) go back only a few decades, a timescale which climate has been naturally varying over since there was climate, long before man.” click here