Comments

Author Comment Last activity Moderation
guolivar "Short answer is NO ... longer answer is still no but with some reasons behind. In general the EPA (and any other regulatory body) needs A LOT of c..." | Read more » 9 months ago
guolivar "I'm sorry but as usual the time difference kills me. I could potentially listen in but at that time I cannot join the discussions (I'm too busy get..." | Read more » about 1 year ago
guolivar " The particle size distribution (mass, volume or number) is very variable and even though "on average" it's fairly stable, the day-to-day variabili..." | Read more » almost 2 years ago
guolivar "Short answer ... No. Long answer ... Absolutely no! I'll try to explain why, even though it sounds possible, the uncertainties are so large that t..." | Read more » almost 2 years ago
guolivar " It all depends on what your objectives are. You'll notice that most air quality monitoring stations (the regulatory ones) have wind measurements w..." | Read more » about 2 years ago
guolivar "I'll try to unpack a couple of things here. The use of zero filters is standard practice as a quick check of particle instruments. It is used to t..." | Read more » over 2 years ago
guolivar "Great work @sagarpreet! This might get rambly because there is no right answer but I'll try to explain why and what then. The first thing you nee..." | Read more » over 2 years ago
guolivar "The description of the operating principle can be misleading. Optical particle measurements rely on intensity of scattering rather than "amount of..." | Read more » almost 3 years ago
guolivar "I tried to put a long answer here but it kept throwing errors so I wrote a note with my thoughts on this issue: https://publiclab.org/notes/guoliv..." | Read more » about 3 years ago
guolivar "Smoke particles (and by smoke I mean combustion products) come in sizes all the way down to 1nm (0.001micron) and in shapes that make it very trick..." | Read more » over 3 years ago
guolivar "The question if "which model is best" is not easy to answer as it is always dependent on what the results are used for. There have been a few studi..." | Read more » over 4 years ago