Australian Politics Forum - Evidence for global warming.

lee Gold Member Offline Australian Politics Posts: 17384 Gender:	Re: Evidence for global warming. Reply #630 - Aug 15^th, 2021 at 4:08pm UAH has July 2021 at +0.20C, July 2020 at +0.30C http://www.drroyspencer.com/2021/08/uah-global-temperature-update-for-july-2021-...
Back to top	IP Logged

Bobby.

Moderator

Offline

Australian Politics

Posts: 103389
Melbourne
Gender: male

Re: Evidence for global warming.
Reply #631 - Aug 15^th, 2021 at 5:30pm

Monk doesn't need to apologise:

https://www.noaa.gov/news/its-official-july-2021-was-earths-hottest-month-on-rec...

It’s official:
July was Earth’s hottest month on record

August 13, 2021

July 2021 has earned the unenviable distinction as the world’s hottest month ever recorded, according to new global data released today by NOAA’s National Centers for Environmental Information.

“In this case, first place is the worst place to be,” said NOAA Administrator Rick Spinrad, Ph.D. “July is typically the world’s warmest month of the year, but July 2021 outdid itself as the hottest July and month ever recorded. This new record adds to the disturbing and disruptive path that climate change has set for the globe.”

July 2021 by the numbers

Around the globe: the combined land and ocean-surface temperature was 1.67 degrees F (0.93 of a degree C) above the 20th-century average of 60.4 degrees F (15.8 degrees C), making it the hottest July since records began 142 years ago. It was 0.02 of a degree F (0.01 of a degree C) higher than the previous record set in July 2016, which was then tied in 2019 and 2020.
The Northern Hemisphere: the land-surface only temperature was the highest ever recorded for July, at an unprecedented 2.77 degrees F (1.54 degrees C) above average, surpassing the previous record set in 2012.
Regional records: Asia had its hottest July on record, besting the previous record set in 2010; Europe had its second-hottest July on record—tying with July 2010 and trailing behind July 2018; and North America, South America, Africa and Oceania all had a top-10 warmest July.

Extreme heat and global climate change

With last month’s data, it remains very likely that 2021 will rank among the world’s 10-warmest years on record, according to NCEI’s Global Annual Temperature Rankings Outlook.

Extreme heat detailed in NOAA’s monthly NCEI reports is also a reflection of the long-term changes outlined in a major report released this week by the Intergovernmental Panel on Climate Change offsite link.

“Scientists from across the globe delivered the most up-to-date assessment of the ways in which the climate is changing,” Spinrad said in a statement. “It is a sobering IPCC report that finds that human influence is, unequivocally, causing climate change, and it confirms the impacts are widespread and rapidly intensifying.”

Back to top

IP Logged

Captain Nemo

Gold Member

Offline

Australian Politics

Posts: 9996
Melbourne
Gender: male

Re: Evidence for global warming.
Reply #632 - Aug 15^th, 2021 at 11:16pm

Interesting that we are pretty much at the low end of Solar cycle activity and just beginning the upswing of the next cycle - Solar Cycle 25.

Hence, this record high temperature is occurring at a very low Solar activity period.

There should be no doubt that Global Warming is a result of very high levels of CO₂ in the atmosphere.

Back to top

The 2025 election could be a shocker.

IP Logged

lee Gold Member Offline Australian Politics Posts: 17384 Gender:	Re: Evidence for global warming. Reply #633 - Aug 16^th, 2021 at 2:00pm Captain Nemo wrote on Aug 15^th, 2021 at 11:16pm: There should be no doubt that Global Warming is a result of very high levels of CO2 in the atmosphere. By how much?
Back to top	IP Logged

lee

Gold Member

Offline

Australian Politics

Posts: 17384
Gender: male

Re: Evidence for global warming.
Reply #634 - Aug 16^th, 2021 at 7:13pm

Bobby. wrote on Aug 15^th, 2021 at 5:30pm:

It’s official:
July was Earth’s hottest month on record

Not According to the NOAA database.
Date Anomaly Rank
202107 0.93°C 470

https://www.ncdc.noaa.gov/cag/global/time-series/globe/land_ocean/all/7/1980-202...

It may have been the hottest July - by 0.01C; providing you think scientists know the earth's temperature to 1/100th of a degree.

If you go to the mapping the grey area is that for which there is no data.

https://www.ncdc.noaa.gov/cag/global/mapping

Back to top

IP Logged

Bobby.

Moderator

Offline

Australian Politics

Posts: 103389
Melbourne
Gender: male

Re: Evidence for global warming.
Reply #635 - Sep 14^th, 2021 at 2:18pm

https://www.bbc.com/news/science-environment-58494641

Climate change:
World now sees twice as many days over 50C

By Becky Dale & Nassos Stylianou
Data journalists

Published

7 hours ago

The number of extremely hot days every year when the temperature reaches 50C has doubled since the 1980s, a global BBC analysis has found.

They also now happen in more areas of the world than before, presenting unprecedented challenges to human health and to how we live.

The total number of days above 50C has increased in each decade since 1980. On average, between 1980 and 2009, temperatures passed 50C about 14 days a year.

The number rose to 26 days a year between 2010 and 2019.

In the same period, temperatures of 45C and above occurred on average an extra two weeks a year.

"The increase can be 100% attributed to the burning of fossil fuels,"

says Dr Friederike Otto, associate director of the Environmental Change Institute at the University of Oxford.

Back to top

IP Logged

lee Gold Member Offline Australian Politics Posts: 17384 Gender:	Re: Evidence for global warming. Reply #636 - Sep 14^th, 2021 at 2:54pm So why only since 1980? Surely it should be "evah". The BBC. Once a respected institution. Now not so much. Of course up until the late 70's was a global cooling scare.
Back to top	IP Logged

Bobby. Moderator Offline Australian Politics Posts: 103389 Melbourne Gender:	Re: Evidence for global warming. Reply #637 - Sep 14^th, 2021 at 3:04pm lee wrote on Sep 14^th, 2021 at 2:54pm: So why only since 1980? Surely it should be "evah". The BBC. Once a respected institution. Now not so much. Of course up until the late 70's was a global cooling scare. The BBC only ever prints gospel truth - you know that?
Back to top	IP Logged

lee

Gold Member

Offline

Australian Politics

Posts: 17384
Gender: male

Re: Evidence for global warming.
Reply #638 - Sep 14^th, 2021 at 4:39pm

Bobby. wrote on Sep 14^th, 2021 at 3:04pm:

The BBC only ever prints gospel truth -

"Ben Rich repeats the BBC’s frequent lie, that climate change is making hurricanes stronger, expressed of course in the usual “scientists say” way. These are his exact words:

“Climate scientists believe that global warming is making them stronger” "

https://www.bbc.co.uk/weather/features/58503854

"“The future influence of climate change on tropical cyclones is likely to vary by region, but the specific characteristics of the changes are not yet well quantified and there is low confidence in region-specific projections of frequency and intensity.”

“The global number of ETCs is unlikely to decrease by more than a few percent. ”

page 1220 AR5 chapter 14.

"” Consistent with this, studies have shown that pre-cipitation is projected to increase in ETCs despite no increase in wind speed intensity of ETCs (Bengtsson et al., 2009; Zappa et al., 2013b)”

page 1251

AR6?

"The IPCC’s latest report (AR6) continues the claim that human CO2 emissions have caused earth’s climate to warm–no shocker there. But the impacts this has had on Atlantic hurricane/global tropical cyclone activity may come as a surprise, at least to those who were duped by the narrative constructed over the past few decades. As NOAA/GFDL Senior Scientist Tom Knutson explains, global warming has had no impact on either storm frequency nor intensity…"

"But most importantly, within ALL of the findings, there is no strong evidence of increasing trends in U.S. landfalling hurricanes or major hurricanes, or of Atlantic basin-wide hurricanes or major hurricanes since the late 1800s, states Knutson.

In other words, one of the long-standing and key implications of CAGW, which has had ordinary folks concerned for decades now, has categorically been laid to rest: anthropogenic global warming does not lead to an increase in storms, neither in frequency nor intensity."

https://electroverse.net/ipcc-atlantic-hurricanes-tropical-cyclones-have-not-inc...

"There is also low confidence in past-century trends in the number and intensity of the strongest extratropical cyclones over the Northern Hemisphere due to the large interannual-to-decadal variability and temporal and spatial heterogeneities in the volume and type of assimilated data in atmospheric reanalyses, particularly before the satellite era. Over the Southern Hemisphere, it is likely that the number of extratropical cyclones with low central pressures (<980 hPa) has increased since 1979. The frequency of intense extratropical cyclones is projected to decrease (medium confidence). Projected changes in the intensity depend on the resolution of climate models (medium confidence). "

AR6 page 47 of 159

Back to top

IP Logged

Ayn Marx

Gold Member

Offline

Australian Politics

Posts: 2937
South of Australia
Gender: male

Re: Evidence for global warming.
Reply #639 - Sep 14^th, 2021 at 5:14pm

Captain Nemo wrote on Aug 15^th, 2021 at 11:16pm:

Interesting that we are pretty much at the low end of Solar cycle activity and just beginning the upswing of the next cycle - Solar Cycle 25.

Hence, this record high temperature is occurring at a very low Solar activity period.

There should be no doubt that Global Warming is a result of very high levels of CO₂ in the atmosphere.

The science of climate change is unambiguously scary but the psychology of deniers is far scarier.

Back to top

The Human Race is Insane

IP Logged

lee Gold Member Offline Australian Politics Posts: 17384 Gender:	Re: Evidence for global warming. Reply #640 - Sep 14^th, 2021 at 5:23pm Ayn Marx wrote on Sep 14^th, 2021 at 5:14pm: The science of climate change is unambiguously scary but the psychology of deniers is far scarier. So tell us where it is unambiguous.
Back to top	IP Logged

Bobby.

Moderator

Offline

Australian Politics

Posts: 103389
Melbourne
Gender: male

Re: Evidence for global warming.
Reply #641 - Oct 3^rd, 2021 at 5:29pm

https://climate.nasa.gov/resources/global-warming-vs-climate-change/

Changes observed in Earth’s climate since the early 20th century are primarily driven by human activities,

particularly fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth’s atmosphere, raising Earth’s average surface temperature. These human-produced temperature increases are commonly referred to as global warming. Natural processes can also contribute to climate change, including internal variability (e.g., cyclical ocean patterns like El Niño, La Niña and the Pacific Decadal Oscillation) and external forcings (e.g., volcanic activity, changes in the Sun’s energy output, variations in Earth’s orbit).

Global warming is the long-term heating of Earth’s climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth’s atmosphere. The term is frequently used interchangeably with the term climate change, though the latter refers to both human- and naturally produced warming and the effects it has on our planet. It is most commonly measured as the average increase in Earth’s global surface temperature.

Since the pre-industrial period, human activities are estimated to have increased Earth’s global average temperature by about 1 degree Celsius (1.8 degrees Fahrenheit), a number that is currently increasing by 0.2 degrees Celsius (0.36 degrees Fahrenheit) per decade. It is unequivocal that human influence has warmed the atmosphere, ocean, and land.

Back to top

IP Logged

Super Nova

Gold Member

Offline

Posts: 3065
Everywhere
Gender: male

Re: Evidence for global warming.
Reply #642 - Oct 4^th, 2021 at 3:18am

Ayn Marx wrote on Sep 14^th, 2021 at 5:14pm:

Captain Nemo wrote on Aug 15^th, 2021 at 11:16pm:

Interesting that we are pretty much at the low end of Solar cycle activity and just beginning the upswing of the next cycle - Solar Cycle 25.

Hence, this record high temperature is occurring at a very low Solar activity period.

There should be no doubt that Global Warming is a result of very high levels of CO₂ in the atmosphere.

The science of climate change is unambiguously scary but the psychology of deniers is far scarier.

I agree. The deniers and their influence on policy makers is what will be our undoing.

This century will go down in history as the period we did SFA to secure the planet for human habitation. We deserve a big cull. Nature will provide it.

Back to top

IP Logged

Ayn Marx Gold Member Offline Australian Politics Posts: 2937 South of Australia Gender:	Re: Evidence for global warming. Reply #643 - Oct 4^th, 2021 at 7:52am Super Nova wrote on Oct 4^th, 2021 at 3:18am: . This century will go down in history as the period we did SFA to secure the planet for human habitation. . How, when there’ll be nobody left to write it?
Back to top	The Human Race is Insane IP Logged

lee

Gold Member

Offline

Australian Politics

Posts: 17384
Gender: male

Re: Evidence for global warming.
Reply #644 - Oct 4^th, 2021 at 11:30am

We know CO2 is a well mixed gas. Why then is the Antarctic cooling, except for the peninsula which is outside the Antarctic Circle?

"The Antarctic Peninsula has had a globally large increase in mean annual temperature from the 1951 to 1998 followed by a decline that still continues. "

https://www.nature.com/articles/s41598-017-05989-4

"Recent regional climate cooling on the Antarctic Peninsula and associated impacts on the cryosphere"

https://www.sciencedirect.com/science/article/abs/pii/S0048969716327152

"Absence of 21st century warming on Antarctic Peninsula consistent with natural variability"

https://www.nature.com/articles/nature18645

It warms, it cools - it is indeed a magic gas.

Back to top

IP Logged