Comments by "Old Scientist" (@OldScientist) on "Climate crisis: TOO LATE already? | Alarming UN report on climate change | Latest News | WION" video.

The Great Barrier Reef's coral cover has reached the greatest extent ever recorded (AIMS). If you look at the Global Coral Reef Monitoring Network (GCRMN) data, the WIO (West Indian Ocean) shows 26% hard coral cover in 1985 upto 30% in 2020. South Asia reefs shows a decline around 2000 to below 25% then a regrowth to around 40% (2010) and a decline to 25% (2020). The Red Sea shows no change at around 25% (1995-2020). So the pattern in these three areas show no relationship to each other or to a changing climate. GCRMN data for the most important coral bioregion, the East Asia Seas, with 30% of the world’s coral reefs, and containing the most diverse coral of the ‘Coral Triangle’, show no statistically significant net coral loss since records began. The East Asia region has the biggest human population living in close proximity to reefs, and is located in the Indo-Pacific Warm Pool – the hottest major water mass on earth.
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Deserts have shrunk considerably since the 1980's. The Sahara shrank by 12,000km² per year 1984-2015(Liu & Xue, 2020). The Earth has greened by 15% or more in a human lifetime. "The greening of the planet over the last two decades represents an increase in leaf area on plants and trees equivalent to the area covered by all the Amazon rainforests. There are now more than two million square miles of extra green leaf area per year"(NASA, 2019). Global tree canopy cover increased by 2.24 million square kilometers (865,000 square miles) between 1982 and 2016 (Nature, 2018). As well as human intervention, the reasons for this include forests expanding polewards aided by additional CO2 and a slight rise in temperature. The Earth’s natural vegetation productivity actually increased 6% in 18 years (Nemani et al, 2003) with 42% of this increase coming from the Amazon rainforests.
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Good news: There has been a 10% decline in natural disasters since 2000 (CRED).
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@mr-boo Some actual data and citations would be nice. You know, to support your negative assertions.
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@mr-boo Still nothing. No citations. Poor show.
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@Gary Anthony Some references to disprove my points would be appreciated. Otherwise we can say whatever we like. For example, some scientists say the Moon is a supernuminous stone, or some scientists say there is a global climate apocalypse. You get the idea.
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@Gary Anthony What exactly was I wrong about? In 2022, AIMS LTMP (long term monitoring programme) found record high coral cover on the Great Barrier Reef of 0.34 (i.e. 34% of the seabed on the coral reefs monitored are covered with coral). Over the past 36 years, cover has varied dramatically, and reached a low point in 2011 of 0.12. There is about twice as much coral in 2022 as in 2011. Since 2016 there has been a rapid rise in cover, despite four bleaching events occurring between 2016 and 2022. I did not make any predictions, so presumably I can't be wrong about that either. Although how corals are going to become extinct from an average temperature rise of a few tenths of a degree is beyond me, especially when you consider the Indo-Pacific Warm Pool – the hottest major water mass on earth has the most diverse reefs, and its waters are warmer than those of the Great Barrier Reef. Coral are warmth loving animals. As the oceans warm they will be able to spread away from the equator. Their range will expand.
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@Gary Anthony From that, I take it that you were wrong to say I was wrong. As regards sea surface temperature, it is the only environmental predictor highly related to marine biodiversity. Lower temperatures are related to fewer species. The highest sea surface temperatures are associated with the highest biodiversity. Corals will survive the rise in temperature. They will expand their range as they need warm water to survive. They survived previous warmer periods, e.g. the Medieval Warm Period, the Holocene Climatic Optimum, the Eemian Interglacial, the PETM, etc, etc. They survived hundreds of millions of years of Earth's history when it was considerably warmer than it is now.
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@Gary Anthony Oh dear. Confronted with evidence, and you deny it. Coral is most diverse in the warmest parts of the world’s oceans. This applies not just to coral but has been shown across 13 major taxonomic groups from zooplankton to marine mammals. Warmer water = more biodiversity. That is a fact.
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@Voidisyinyang Voidisyinyang I don't know who's expecting cyclones to become more frequent and intense. Using data from the JMA (1951-2022), we see typhoon activity trending downwards for over 7 decades. There is evidence cited in AR6 (IPCC) that Australia is experiencing the lowest frequency of tropical cyclones in the last 550 to 1,500 years. As I stated before there is about twice as much coral in 2022 as in 2011. Since 2016 there has been a rapid rise in cover, despite four bleaching events occurring between 2016 and 2022. Climate alarmists don't like this because it refutes all their failed predictions over many many years, so I have no agreement with the latest ones about the wrong type of coral on the brink of being destroyed by imaginary storms. Answer me this: how are corals going to become extinct from an average temperature rise of a few tenths of a degree, especially when you consider the Indo-Pacific Warm Pool – the hottest major water mass on earth has the most diverse reefs, and its waters are warmer than those of the Great Barrier Reef? Are Coral warmth loving animals largely confined to tropical waters? As the oceans warm shouldn't they be able to spread away from the equator, and expand their range?
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@Muddslinger0415 The current warming we are experiencing is shallow (0.13°C per decade, UAHv6). This is less than all the models. Importantly, it has produced none of dire global consequences predicted. None. Zero. So there is no climate crisis.
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@voidisyinyangvoidisyinyang885 From the NOAA GFDL website 'Global Warming and Hurricanes, An Overview of Current Research' (dated Feb. 9, 2023). And I quote "We conclude that the historical Atlantic hurricane data at this stage do not provide compelling evidence for a substantial greenhouse warming-induced century-scale increase in: frequency of tropical storms, hurricanes, or major hurricanes, or in the proportion of hurricanes that become major hurricanes."
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@Janon2088 It's pretty impossible to argue against 'climate change', because the climate will change always has always will. It's just pumping CO2 into the atmosphere doesn't seem to be endangering the Great Barrier Reef as some have claimed.
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There is no objective observational evidence that we are living in a global climate crisis. The UN's IPCC AR6, chapter 12 "Climate Change Information for Regional Impact and for Risk Assessment", section 12.5.2, table 12.12 confirms there is a lack of evidence or no signal that the following have changed: Air Pollution Weather (temperature inversions), Aridity, Avalanche (snow), Average precipitation, Average Wind Speed, Coastal Flood, Agricultural drought, Hydrological drought, Erosion of Coastlines, Fire Weather (hot and windy), Flooding From Heavy Rain (pluvial floods), Frost, Hail, Heavy Rain, Heavy Snowfall and Ice Storms, Landslides, Marine Heatwaves, Ocean Acidity, Radiation at the Earth’s Surface, River/Lake Floods, Sand and Dust Storms, Sea Level, Severe Wind Storms, Snow, Glacier, and Ice Sheets, Tropical Cyclones. There is no objective observational evidence that we are living through a global climate crisis. None.
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