Tap tap tap... tap tap tap... Sarah's home office has a lovely view out the window. The cherry tree hasn't started to blossom yet but a host of little nuthatches come and visit. Which is nice—except that one little guy has decided to do his daily drill on the corner of the window sill. After a half an hour of gentle rapping, rapping, Sarah is ready to shout, "Nevermore!"
Joanne reports: Work is going well. It is sometimes lonely not getting to walk around and see you all, or see the latest fashion trends ala Ms. Knack. Also my headset is giving me a headache on the daily.
A message from Tony Busalacchi, UCAR president: We have been hearing that many of our Asian staff are feeling fearful due to increased instances of racism linked to the coronavirus outbreak. Increased racist attacks targeted at people of Asian descent are being reported across the country, as well as in our own county, including an inappropriate sign on a local liquor store.
Mausumi Dikpati is a senior scientist at HAO. She studies the dynamics between Rossby waves and solar activity such as flares and coronal mass ejections (CMEs).
High Altitude Observatory (HAO) staff was invited by UCAR Science Education to present “Space Weather” to the public at the Little Shop of Physics 29th Annual Open House at the Colorado State University in Fort Collins. It was the biggest and brightest open house they have had yet, which was attended by approximately 10,000 visitors.
Recent numerical simulations and observations of sunspots show a significant amount of opposite polarity magnetic fields within the sunspot penumbra. Most of the opposite polarity fields are associated with convective downflows.
We have analyzed 33 cavities observed between 2012 and 2018, from solar activity maximum to minimum. For each cavity we applied a differential emission measure method to obtain both a temperature distribution and a value of the average temperature.
Rossby waves arise in thin layers within fluid regions of stars and planets. These global wave-like patterns occur due to the variation in Coriolis forces with latitude. In the past several years observational evidence has indicated that there are also Rossby waves in the Sun.
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