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| From: Free Thinking Doggie |
Some good news...
The Earth is greening at a rate never seen before in all recorded history, according to satellite records from 1982–2023. Global crop yields have risen 15–20% since 1960, almost entirely attributable to CO₂ fertilisation (Idso, 2013 IPCC AR6 WG1 Ch5). Famine deaths have also plummeted over a time when the world's population doubled and CO₂ deserves much of the credit. We have increased CO₂ over the past century to thank for this explosion in plant life and available plant food from booming agriculture.
There's been a more than 18% increase in the global leaf area in 40 years, the largest gains in India and China (from CO₂ fertilisation). Warmer more balmy temperatures are also lengthening the growing seasons. This is a feature of rising levels of water vapour and cloud cover around the world. Every 100 ppm increase in CO₂ typically boosts plant growth by 25–50% in all non-water, limited conditions. My analysis draws on 776 studies from 1993–2019, showing an ideal average CO₂ level of 550 ppm delivers a 38% increase in global biomass.
This is an astonishing windfall for life on earth, chiefly from CO₂, a trace gas at 420 ppm (or 0.04%). It also has a secondary benefit for life by contributing to baseline levels of warmth around the planet, along with water vapour and other trace gases with similar properties, like methane (1,920-1,930 parts per billion). However, this is not enough to be the defining control knob for changing climate around the world. Water vapour and cloud cover are the mainstays of rainfall and the entire hydrologic cycle, returning water as precipitation to rivers lakes and maintaining the oceans (where 78% of rain ends up). These are the reasons why commercial greenhouses pump CO₂ to 1000–1500 ppm deliberately. It ensures that crop yields jump by 20–70% depending on the crop. If 1000 ppm is good for tomatoes, why is 420 ppm an 'emergency' for the planet?
The world population has more than doubled since 1970, going from roughly 3.7 billion to over 8 billion by 2022-2025. Population tripled since 1950, from roughly 2.5 billion people to over 8 billion today (8.2 billion as of late 2024/early 2025). This massive global expansion was driven by increased food production and agricultural advancement, known as the 'Green Revolution'. This period involved significant agricultural advancements like high-yield crop varieties, irrigation and the use of fertilizers and pesticides, which vastly increased food availability.
CO₂ is the foundation for all life on earth and the chief source of photosynthesis. It also delivers the calcium carbonate in water to produce exoskeletons for all shellfish. This is the miracle of CO₂, enabling green chlorophyll plants and algae to convert sunlight into food energy and oxygen. This way, CO₂ supports every food chain on earth.
The science says 600–1000 ppm of CO₂ plus 1–2°C extra warming hits the sweet spot for all terrestrial and marine life, including human civilization. We should be managing adaptation and energy abundance not waging war on a trace gas that makes the planet greener. Higher CO₂ gives a net benefit to life on Earth. This means the current 'carbon policy' of driving down CO₂ levels - the purpose for net zero - is anti-life.
https://x.com/PeterDClack/status/1999239937309442058?s=20
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| Current Thread | Author | Time | | Free Thinking Doggie | 08:30:43 | | Denc 🗡 | 13:28:57 | | LP12 | 09:44:55 | | Occhio Pazzo 🇬🇧 | 09:08:57 | | Denc 🗡 | 13:32:02 | | Denc 🗡 | 13:31:46 | | Free Thinking Doggie | 09:18:35 |
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