![]() It went into effect at midnight Thursday, meaning Californians should not leave home except for essential things such as food, prescriptions, health care and commuting to jobs considered crucial. “We also want to make sure communities most affected by emissions are getting the air quality benefits of reducing CO2. Gavin Newsom's order marks the first statewide mandatory restrictions in the United States to help combat the outbreak. ![]() “As the world gets more serious about mitigating climate-warming CO2, we need metrics to let us know if we’re doing a good job of reducing it,” Hopkins said. Then they could use measurements of the grass in that area to measure the success of that action. However, these measurement systems cannot offer neighborhood-scale observations needed to inform policies intended to reduce greenhouse gas emissions and ultimately, climate change.įor example, cities could decide to reduce their carbon footprint by restricting vehicle traffic on a particular road or closing down another known source of emissions. In addition, existing satellite or urban tower networks can measure CO2 in more economically developed cities. It’s less expensive and lets us measure in new locations that weren’t previously possible.” “Grass already got the CO2 out of the air and did a lot of the work for us. ![]() “People traditionally measure radiocarbon in the air by collecting large, 2-liter flasks of air, which you then have to take to a lab and extract. ![]() The researchers have found that using wild grasses offers several advantages over other techniques. However, the city’s 19th Avenue, where traffic was redirected, showed a big increase in fossil fuel CO2 based on radiocarbon content in the grass.Ĭloseup of wild grass sample used to understand the distribution of fossil fuel emissions in California. California, on the whole, has a relatively robust level of vaccination coverage. Since the city’s Great Highway remained closed to cars until the end of 2021, it retained its low emissions levels into 2021. “Other likely factors include the number of low-emission or electric vehicles in an area, and distance from industrial warehouses, with heavy big-rig traffic.”ĭrilling down further, the study detailed emissions levels on specific roadways in San Francisco. “We believe many of the differences we saw can be attributed to how many people are able to continue working remotely,” Hopkins said. Both the Los Angeles metro area and Pasadena had bigger pollution rebounds than the coast, or than the state as a whole. The team’s grass samples revealed that coastal Orange County retained their pandemic-related reduction in emissions, and that San Francisco has fared better than Los Angeles. “Plants absorb CO2 during photosynthesis and incorporate it into their tissues, recording a snapshot of local fossil fuel inputs in the process,” said study lead Cindy Yañez, formerly of UCR, now an Earth System Sciences doctoral student at UC Irvine. He believes we don’t necessarily need to shut down again, but pull back and then proceed in a very cautious way.Ĭalifornia Returns to Lockdown, Some Schools Plan for Online Learning California Returns to Lockdown, Some Schools Plan for Online Learning (Meredith St.Graduate student Cindy Yañez taking inventory of plant samples mailed in by community scientists for radiocarbon dating. Infectious Disease Doctor Anthony Fauci says a new approach is needed to get the COVID-19 outbreak under control. What we were seeing in Wuhan six months ago, five months ago, now we are there.” Lilian Abbo, with the University of Miami, says, “Miami is now the epicenter of the pandemic. Home prices climbed in three out of four U.S. Los Angeles and San Diego public school districts announced only online learning will take place in the fall.Īnd Florida now has more coronavirus cases than several countries.ĭr. The median existing-home price for all housing types in January was 359,000, an increase of 1.3 from January 2022 (354,300). This includes bars, restaurants, gyms, and places of worship. More than 40 states are dealing with increasing infection rates, and some are rolling back their reopening plans.Ĭalifornia is back in lockdown, with nearly all public spaces ordered to stop indoor activities and operations. Since February 2021, California has created 1,628,300 new. COVID-19 has claimed more than 135,000 American lives and more than 3.3 million people have been infected. ‘Lockdown’ states like California did better economically than ‘looser’ states like Florida, new COVID data shows, with California’s economy having contracted less than such states economic output shrank 3.5 on average for the U.S., compared with 2.8 for California.
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