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#SolarActivity

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Mastodon! I'm delivering a talk to a couple of grade 9 classes in a month on the use of space (mainly satellites, but probes to other planets, comets, etc., will be included).

How does your work benefit from satellites?

I'm thinking of a direct use of the data, as opposed to stuff like “internet access” or “my bank relies on satellites to transfer my grant money from one account to another” 😄

Anecdotes, rants, personal stories are all fair game 😊
(To the inevitable suggestion that I just Google this, yes, I can, and have, but I want the human element - I want to be able to say "someone I ‘know’ uses satellites for their job, and this is what they like about the tech”)

Hashtag suggestions are welcome.
(Also - question: Does Mastodon discriminate hashtags with different capitalization? Are #Astronomy and #astronomy functionally different? We *really* need some kind of ISO standard 😉)

#Archaeology #Physics #SolarActivity #Geology #SevereWeather #Climate #ClimateChange
#Satellite #Satellites #Agriculture #oceanography

@ecosdelfuturo I find it strange that on the #IPCC page it's impossible to find any article mentioning the impact of #SolarActivity ipcc.ch/search/?search=solar+r

@damagedonegr mentions "several old and outdated TSI reconstructed series are still frequently used in the literature...by mostly focusing on two such outdated TSI reconstructions by Bard et al. and Hoyt and Schatten", I'd call that "anyone in the discipline" link.springer.com/article/10.1

www.ipcc.chSearch — IPCC
Fortgeführter Thread

📆 2004 The level of #SolarActivity ☀️ during the past 70 years is exceptional, and the previous period of equally high activity occurred more than 8,000 years ago. During the past 11,400 years almost all of the earlier high-activity periods were shorter than the present episode.
@mpsgoettingen 🇩🇪
#Sodankylä Geophysical Observatory 🇫🇮
@hadw_bw 🇩🇪
#EAWAG 🇨🇭
cc.oulu.fi/%7Eusoskin/personal

Antwortete im Thread

@dan613 in other words : "we still have an underdeveloped 🚼 understanding of solar dynamo mechanisms and hence precise prediction of near-future #SolarActivity is not attained" nature.com/articles/s41598-021

Not related to #ClimateChange, but to #SolarActivity : "#SpaceWeather is in its infancy 🐣,. We are in a race against time, since we cannot know when the ‘perfect storm’ may occur – and it seems as if we are overdue a large event." techhub.social/@spaceflight/11 - Dr Huw Morgan, #AberystwythUniversity

NatureGradual onset of the Maunder Minimum revealed by high-precision carbon-14 analyses - Scientific ReportsThe Sun exhibits centennial-scale activity variations and sometimes encounters grand solar minimum when solar activity becomes extremely weak and sunspots disappear for several decades. Such an extreme weakening of solar activity could cause severe climate, causing massive reductions in crop yields in some regions. During the past decade, the Sun’s activity has tended to decline, raising concerns that the Sun might be heading for the next grand minimum. However, we still have an underdeveloped understanding of solar dynamo mechanisms and hence precise prediction of near-future solar activity is not attained. Here we show that the 11-year solar cycles were significantly lengthened before the onset of the Maunder Minimum (1645–1715 CE) based on unprecedentedly high-precision data of carbon-14 content in tree rings. It implies that flow speed in the convection zone is an essential parameter to determine long-term solar activity variations. We find that a 16 year-long cycle had occurred three solar cycles before the onset of prolonged sunspot disappearance, suggesting a longer-than-expected preparatory period for the grand minimum. As the Sun has shown a tendency of cycle lengthening since Solar Cycle 23 (1996–2008 CE), the behavior of Solar Cycle 25 can be critically important to the later solar activity.
Antwortete im Thread

@dan613 the 2010 article by @rahmstorf mentions "While the cooling during some volcanic episodes appears to be slightly overestimated in our model (possibly suggesting an underestimate of the effect of #SolarActivity)...Further research is needed to resolve this issue." agupubs.onlinelibrary.wiley.co

The current #SolarCycle seems to begin earlier and to be more active than predicted, which leads to the assumption that "further research is needed" (over a longer period than the last 2000 years)