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Deciphering the ‘SPM AR6 WG1’ code

Real Climate

Another clue indicating a shortcoming is if you look at the atmospheric CO 2 -concentrations over time to see how much impact the IPCC reports have had on the real policy-makers in the world (Figure below). The cause of our changing climate is the increase in atmospheric greenhouse gas concentrations that we have released into the air.

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2022 updates to model-observation comparisons

Real Climate

Satellite comparisons The weighted atmospheric temperatures that are retrieved from the MSU/SSU, and now AMSU , instruments are not standard CMIP diagnostics (though they should be!). The CMIP3 ensemble continues to astound! CMIP3 model ensemble compared to surface temperature observations (in ºF), showing two decades of skillful projection.

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Oceans may start emitting ozone-depleting CFCs

Successful Green

As atmospheric concentrations of CFC-11 drop, the global ocean should become a source of the chemical by the middle of next century, a new MIT study predicts. The world’s oceans are a vast repository... The post Oceans may start emitting ozone-depleting CFCs appeared first on successful GREEN.

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The definitive CO2/CH4 comparison post

Real Climate

But methane’s role in atmospheric chemistry and as a source of stratospheric water vapour means that it has a bigger effect on climate than just the direct effect of its concentration. Before we go any further though, we need to understand that the effective perturbation time for CO 2 and CH 4 in the atmosphere are very different.

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The CO2 problem in six easy steps (2022 Update)

Real Climate

The fact that there is a natural greenhouse effect (that the atmosphere restricts the passage of infra-red (IR) radiation from the Earth’s surface to space) is easily deducible from; i) the mean temperature of the surface (around 15ºC) and, ii) knowing that the planet is normally close to radiative equilibrium. in IPCC TAR).

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A NOAA-STAR dataset is born…

Real Climate

Readers will recall that the TLT product is nominally a weighted average of atmospheric temperature anomalies from the surface up to 5km or so. Historically, there has been a lot of discussion about non-climatic effects in the surface stations and ocean data – station moves, urban heating, instrument changes etc. Hao, and Q.

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Why is future sea level rise still so uncertain?

Real Climate

Meanwhile, note that the factors listed above involve the whole Earth system: the oceans, the cryosphere, the atmosphere, the solid earth and lithosphere, and a full range of scales, from the city block and shoreline, to ice dynamics that change over kilometers, to GRD footprints, to the whole global ocean. 2020) or Sadai et al.

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