Sensible Heat /Latent Heat ratio
Opponent:
"Christos Vournas's claims in his X post are not aligned with mainstream climate science. His interpretation of CO2 in ice cores as indicating colder periods is incorrect, as CO2 is trapped as gas and correlates with warmer periods.
His view on current warming being due to orbital forcing, not human activity, is unsupported, given the rapid pace and magnitude of modern warming driven by greenhouse gases. These findings highlight the importance of aligning interpretations with established scientific data and consensus."
Answer:
"given the rapid pace and magnitude of modern warming"
Yes, in last 100 years we observe a rapid pace of modern warming.
Let's explain:
Earth's surface is covered about ~ 70% with oceanic waters. Also vast areas on land have water in soils and in plants...
Water is mostly present in liquid phase, but also water exists on Earth's surface in solid phase (snow and ice).
We have the seasonal changes in temperatures, because of Earth's axial tilt (23,4°).
And Earth is in a slow orbitally forced warming trend.
Every year there are colder periods (winters), and there are warmer periods (summers).
In winters the area of the sea-ice cover extends, and in summers the area of the sea-ice cover shrinks.
Also in winters the sea-ice gets thicker, and on summers the sea-ice gets thinner.
Earth is in a slow orbitally forced warming trend. Which means Earth's surface, year after year, continuously accumulates some excessive quantities of solar energy as heat.
Because Earth in its annual cycle around sun is currently subjected to a positive radiative energy balance.
Energy absorbed > Energy emitted
Every year in summers the sea-ice covered areas shrink a little more.
And every year in winters the sea-ice covered areas extend a little less.
The phenomenon is due to the heat accumulation process.
From Wikipedia:
Link: Water - Wikipedia
"Water is the only common substance to exist as a solid, liquid, and gas in normal terrestrial conditions.[
States
The three common states of matter
Along with oxidane, water is one of the two official names for the chemical compound H2O;[54 ] it is also the liquid phase of H2O.[55]
The other two common states of matter of water are
the solid phase, ice, and the gaseous phase, water vaporor steam.
The addition or removal of heat can cause phase transitions: freezing (water to ice), melting (ice to water), vaporization (water to vapor), condensation (vapor to water), sublimation (ice to vapor) and deposition (vapor to ice).[56] "
Sensible heat
To distinguish between the energy associated with the phase change (the latent heat) and the energy required for a temperature change, the concept of sensible heat was introduced.
The addition or removal of heat can cause phase transitions.
Here it is the key point:
Because of the cyclical seasonal changes, every year there are the Huge Phase Transitions Processes in Earth's system.
Enormous quantities of sea-ice get involved in melting in summers, and enormous quantities of sea-water get involved in freezing in winters.
Every year there is less and less sea-ice left.
Why is then the accelerated pace of warming?
Because what sea-ice has left is localized at much higher latitudes on the globe. Because there is not sea-ice at lower latitudes, as it was there a 100 years ago.
Thus, for the yearly portion of the excessive accumulated heat to effectively reach the remained sea-ice fields and to be consumed in ice melting as latent heat, without a significant along-side temperature rise becomes more and more difficult task.
We have the yearly accumulated excessive heat necessarily subjected to rise the Global temperature - more sensible heat in action - on the latent-heat-to-be expence.
The (Sensible Heat) /(Latent Heat) ratio (for a given radiative energy positive imbalance) is what determines the pace of the planetary warming.
When the ratio is higher, planet experiences more rapid warming, than when it is lower.
At MWP (Medieval Warm Period) the ratio was higher, and at LIA (Little Ice Age) the ratio was lower.