8/5/2023 0 Comments San diego rain totals 2019![]() The students are selling these cubes as a fund-raiser for their cosmic ray ballooning program. This unique laser-etched Moon cube went along for the ride, ascending to an altitude of 101,140 feet: ![]() LASER-ETCHED MOON CUBE: Last week, the students of Earth to Sky Calculus launched a cosmic ray balloon to the stratosphere. These high energy photons make it harder for ice crystals to form in the mesosphere, thus suppressing NLCs. This year, the active sun is hitting Earth's upper atmosphere with lots of extreme ultraviolet radiation. What's going on? The solar cycle may be to blame. This year appears to be different NLCs in 2023 are dimmer and less widespread than before. In recent years, bright NLCs have been sighted as far south as Spain and southern California. At altitudes greater than 80 km, the water crystallizes around disintegrated meteoroids, forming electric-blue structures visible in the night sky. They form every year in summer when wisps of water vapor rise up to the edge of space. "I made this new film to share my experience trying to photograph them." "As we have have passed Summer Solstice, the NLC season still has not started for me," laments Ruslan Merzlyakov, who usually photographs many NLCs from his home in Jutland, Denmark. ![]() ![]() We could no longer see noctilucent clouds from space. First, NASA's iconic AIM spacecraft broke, losing power when its main battery failed. Solar flare alerts: SMS TextĢ023 has not been a good year for noctilucent clouds (NLCs). Is this the calm before the storm? Strong flares remain possible despite the low activity of the past 48+ hours. Yet it has been strangely quiet for days. Giant sunspot AR3354 has a 'beta-gamma-delta' class magnetic field that harbors energy for X-class solar flares. 28, 2023, as a show of thanks for years of service and hope for future daisies: Until then, we will maintain AIM's iconic "daily daisy," frozen at Feb. There may be some hope of a recovery as AIM's orbit precesses into full sunlight in 2024. As a result AIM is offline, perhaps permanently. What happened to NASA's AIM spacecraft, which has been monitoring NLCs since 2007? Earlier this year, the spacecraft's battery failed. As the season progresses, these dots will multiply in number and shift in hue from blue to red as the brightness of the clouds intensifies. For the rest of the season, daily maps from NOAA 21 will be presented here:Įach dot is a detected cloud. An instrument onboard NOAA 21 ( OMPS LP) is able to detect NLCs (also known as "polar mesospheric clouds" or PMCs). The first clouds were detected inside the Arctic Circle by the NOAA 21 satellite. The northern season for NLCs began on May 26th. There are no significant coronal holes on the Earthside of the sun. ![]() Switch to: Europe, USA, New Zealand, Antarctica Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining-a result of the yin-yang relationship between the solar cycle and cosmic rays. Credit: SDO/HMIĬosmic Rays Solar Cycle 25 is intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere. Sunspot AR3354 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. ![]()
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