Substorm-induced energetic electron precipitation: Impact on atmospheric chemistry

first_imgMagnetospheric substorms drive energetic electron precipitation into the Earth’s atmosphere. We use the output from a substorm model to describe electron precipitation forcing of the atmosphere during an active substorm period in April–May 2007. We provide the first estimate of substorm impact on the neutral composition of the polar middle atmosphere. Model simulations show that the enhanced ionization from a series of substorms leads to an estimated ozone loss of 5–50% in the mesospheric column depending on season. This is similar in scale to small to medium solar proton events (SPEs). This effect on polar ozone balance is potentially more important on long time scales (months to years) than the impulsive but sporadic (few SPE/year versus three to four substorms/day) effect of SPEs. Our results suggest that substorms should be considered an important source of energetic particle precipitation into the atmosphere and included in high-top chemistry-climate modelslast_img read more

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A Photo, a Boardwalk Bench and a Pair of Love Affairs

first_imgFor many, Ocean City is filled with fond memories that grow fonder and multiply with each passing summer. The beach, bay and boardwalk are the stuff of youth and innocence, romance and rebellion, family and fun.Benches at Fifth Street on the Ocean City Boardwalk in Ocean City, NJ.And it’s often the smallest of things that trigger the flood of nostalgia.Such was the case for Diane Spencer Kennard, who saw something more than a pair of boardwalk benches when she looked at our “Daily Beach Report” image from Sunday morning (above).For Kennard, the benches represent a love both of her husband and of the seaside town that he couldn’t stop talking about. She shared her story on our Facebook page, and we copy it here:The bench on the left is “our bench.” Twenty-eight years ago, while we were still in college in Chattanooga, TN, we would go to the Chattanooga Choo-Choo and sit on a bench in front of a fountain in their gardens and he would tell me all about Ocean City, NJ where we would honeymoon.He told me specifically of the north end where we could see Atlantic City in the distance. The day after our wedding, when we arrived in OC, the first thing we did on the boardwalk was to walk all the way from the Port O’Call to this bench. We sat and talked about the wedding, and all those times we talked about this trip while sitting on a bench in Chattanooga. Ten years later, he gave me a diamond ring for our tenth anniversary while sitting on this bench. We have been married a little over 26 years, and we still visit our bench every year, along with our kids who are now grown, and relive old memories and make new ones! Now, our daughter is planning her honeymoon in OCNJ next summer. Thank you OCNJ for providing a place for four generations of our family to make memories and grow our family legacy! I don’t know if anyone will read this, but I just had to write it.  See her post below in its original form on the OCNJ Daily page (and “like” us to get Ocean City updates in your news feed). Benches at Fifth Street on the Ocean City Boardwalk Post by OCNJ Daily.last_img read more

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