Posted by Mark Grossi on March 3, 2015
A reader made an important point about my Sunday story on wood-burning restrictions during winter. Soot from wood fires in winter is really only 10% of the particle pollution in the San Joaquin Valley on the worst days, not 30%, as the story says.
The reader is right to say there is a much bigger source of particle pollution, known as PM-2.5. But I was not writing about all sources of PM-2.5 — just the ones that are the most dangerous in your city neighborhoods. I deliberately wrote it that way and for good reason.
I’ll just repeat it. The biggest PM-2.5 danger in winter around your city neighborhood is soot coming from a wood fire, not simply the largest source. I’ll get to the 30% figure in a minute.
Posted by Mark Grossi on March 2, 2015
February was remarkably warm and dry all over the state. Fresno set an all-time record for the warmest February on record. The snowpack continues to lag.
Posted by MarkGrossi on February 24, 2015
The most recent storm was like shooting spit wads at an elephant. California needs much more in the next five weeks.
Posted by The Fresno Bee on February 18, 2015
Biologists on Wednesday placed 54,000 young salmon into the San Joaquin River near Friant Dam, acclimating the fish to the river in hopes of having them return to spawn in a few years.
Posted by MarkGrossi on February 17, 2015
If storms don’t start soon, Fresno’s rain total could land among the 10 driest on record for the third year in a row.
Posted by MarkGrossi on February 9, 2015
Yes, dirty air gets blown into the Valley from the Bay Area and Sacramento. Air officials say the Valley's home-grown problems are worse. But will that remain true in the future?
Posted by MarkGrossi on February 2, 2015
EPA set up a meeting in Sacramento to hear from Californians about a proposed tighter ozone standard. Why not have the meeting in Fresno? The San Joaquin Valley led the nation in ozone exceedances last year — a dubious distinction that happens regularly here.