The implications of overshooting 1.5 °C on Earth system tipping elements—a review

Again a science journal publishes some rubbish about global warming! Fact is that climatology is a very complex science that we still do not understand very well. 

When pseudo scientists engage in alarmism and hysteria like with this article! Was this done for more funding?

1.5 °C is a joke by charlatans not scientists! Nobody is able to measure global atmospheric temperature with such accuracy!

"Tipping elements" or "tipping points" what is that? Smells a lot like junk science!

This article appears to repeat a litany of claims by environmentalists like "deforestation in the Amazon" etc.

From the abstract:

"Due to insufficient emission reductions in recent years, it is increasingly likely that global warming will exceed the 1.5 °C temperature limit in the late 2020s or 2030s. As a result, several Earth system tipping elements [???] could, at least temporarily, have their tipping points [???] surpassed, posing risks of large-scale and profound structural change.

Tipping does not always occur immediately upon crossing such a critical threshold. If the length of time the driver is beyond the critical level is short enough, tipping could still be avoided for some slow-responding elements of the climate system.

An improved understanding is therefore needed of whether tipping remains avoidable, for which systems, and under what conditions. Here, we review how minimising the magnitude and duration of any temperature overshoot beyond 1.5 °C could decrease tipping risks.

Tipping elements with fast response times, such as warm-water coral reefs, are especially vulnerable to overshoot. In contrast, those with slow response times, such as polar ice sheets, may be less sensitive to temporary overshoot. Potential interactions between tipping elements and additional human pressures, such as deforestation in the Amazon or pollution and overfishing of coral reef habitats, may further lower tipping points, narrowing the range of overshoot trajectories that can still avoid it.

The vulnerability of many tipping elements, even under shorter overshoot conditions, underscores that global warming must peak below 2 °C [???] above pre-industrial levels, return to below 1.5 °C as quickly as possible (i.e. within this century), and to around 1 °C thereafter to limit tipping point risks."

The implications of overshooting 1.5 °C on Earth system tipping elements—a review - IOPscience

Fig. 2. Overshooting 1.5 °C risks crossing Earth system tipping points. Illustrative temperature overshoot pathways, exceeding and then returning to below 1.5 °C (solid black line) and other stabilisation pathways (dashed black lines), dependent on uncertainties in future emissions and Earth system feedbacks.