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The typical afternoon convective clouds completely disappeared here too (we had about 99% of totality). Convection seems to stop at about 50%...
We're getting within time range of the GFS LAMP product, which is available as an hourly forecast for 24 hours out and updated hourly (requires a...
There was a two-cylinder, 730 cc two-cycle diesel engine being developed by Renault (Could Our Cars Get Two Stroke Diesels? - Engine Builder...
Thank you Bob. Have you looked at the "unrounded" adjusted fuel mileage ratings for the Equinox diesel (Download Fuel Economy Data - "2018...
Apparently, full diesel hybrid is too expensive for the fuel mileage benefit. Looks like "mild hybrid" (48-volt systems) is better suited for...
I watched 10-15 minutes after your question was presented, Bob. They make some good points, but I disagree with a few (that I saw): - the...
True. Maybe it would be more accurate to say "one of the reasons" diesels tend to exceed their official fuel mileage ratings. According to an...
That's true, but if you recall our discussions on TDIClub several years ago, EPA uses a "correction factor" which includes "ethanol in fuel"...
St. Louis? The GFS ensemble members are converging on a "Bermuda High" setting up. The short-range ensembles (SREF) also show this. So it looks...
According to the GFS ensembles ("spaghetti plots"), upper air configuration appears to be trending toward upper ridging over the central CONUS:...
Yes, that is correct. NMOG is what VOCs are usually referred to in vehicle exhaust. I'm not sure either. You may know more than I do about that,...
The problem with Harley's study is that recent data from EPA itself do not support a transition to NOx limited conditions in California (or all of...
Maybe, but that preceded a very recent study which also empirically shows that reducing NOx emissions increases the production of secondary...
Reducing NOx emissions in some locations does: A national day with near zero emissions and its effect on primary and secondary pollutants -...
Shifting from one air quality issue (NO2 in Europe) to other air quality issues like ozone and PM2.5.
Shifting from one air quality problem to another air quality problem(s) is no solution, IMHO.
In a couple of largely unrelated topics but nevertheless still relevant to environmental news... - Atmospheric deposition on solar PV panels is...
@183 - The Science Daily review of the Karl paper published in Nature doesn't fully characterize the conclusions of the paper. If you read the...
This is very typical, and the phenomenon is known as "decoupling." It is the result of a surface-based nocturnal inversion. The decoupled...
You pretty much capture the essence of the polar vortex, Bob. It typically is a circumpolar flow centered over the poles. Sometimes a "lobe" of...
