[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 9 KB, 225x225, sun.jpg [View same] [iqdb] [saucenao] [google]
6540782 No.6540782[DELETED]  [Reply] [Original]

So Global Warming is occurring, glaciers retreat and temps slowly rise.
I'm not disputing any of that. However, what if the cause(the primary cause) not humans but sun slowly entering the red giant phase.
Maybe we got its stage progression wrong and its going to become a red giant much sooner?
I'm not an expert, but it would seem the sun could send more energetic photons as it becomes more active and less dense(since photons filter out through the sun layers) and its output would rise gradually.
Has anyone measured the size of sun over decades with some precision(especially the sun monitoring sats)? Has there been any change in the sun spectrum?

>> No.6540787

>what if the cause(the primary cause) not humans but sun slowly entering the red giant phase.

We monitor solar output very precisely across the electromagnetic spectrum. It simply hasn't changed enough to explain modern warming. There are many studies on this.
There is also no evidence of it changing size despite what some people will tell you.

The sun wouldn't have to move be moving into the red giant branch to change in output.

>> No.6540789

>>6540782
>I'm not an expert
Obviously not.

>> No.6540826

>>6540789
:^)

>> No.6540866

>>/x/
>>/pol/

>> No.6541914

>>6540789
this, everybody, is a /b/-tier contribution

at least save the shitposting until the thread is derailed

>> No.6541923

>>6540782
>However, what if the cause(the primary cause) not humans but sun slowly entering the red giant phase.
Nope, because the sun's output has been decreasing, but temperatures have still been rising.

Checkmate atheists

>> No.6541945

>>6541923
http://en.wikipedia.org/wiki/Thermal_lag

the modern maximum is over

>> No.6543741
File: 10 KB, 636x486, RSS temps negative slope.gif [View same] [iqdb] [saucenao] [google]
6543741

>>6541923

Except for that little detail that its been cooling for more than a decade.

>> No.6543750
File: 173 KB, 802x402, 619624main_solar%20irradiance%20graph[1].jpg [View same] [iqdb] [saucenao] [google]
6543750

>>6540782
nope
>>6541914
nope
>>6541923
nope

pic courtesy of NASA:
Variations in solar irradiance as measured at the top of the atmosphere

>> No.6543866

>>6543750
Are there any data before 1975? its a pretty small period.

>> No.6543876

>>6540782
If it was changing from its current state, many things such as its radius, temperature and spectra would all change. None of these things are changing. Also no notable changes in magnetic characteristics (solar activity) and no unusual mass ejections that occur close to the end of a star's main sequence life.
Basically, It's all us that are fucking things up for ourselves because we are dumb shits.

>> No.6543964
File: 18 KB, 880x510, SolarIrradianceReconstructedSince1610%20LeanUntil2000%20From2001dataFromPMOD[1].gif [View same] [iqdb] [saucenao] [google]
6543964

>>6543866
Yes, you stupid cunt. Do you know how to use Google?
But only since the mid-20th century has the dominant factor in warming been anthropogenic, so going back this far is largely irrelevant to the discussion.

>> No.6545132
File: 134 KB, 783x607, NOAA Temps Change.gif [View same] [iqdb] [saucenao] [google]
6545132

>>6543964

>tempered data doesn't correlate with the sun

This correlates pretty well with untampered NOAA data.

Measured temperatures in blue. Reported temperatures in red.

See the NOAA website for their "stepwise differences" (temperature changes):
http://www.ncdc.noaa.gov/img/climate/research/ushcn/ts.ushcn_anom25_diffs_pg.gif