iiinova — where your digital self keeps evolving

Steve Smith

@stevenjsmith.bsky.social

200 followers 159 following 34 posts

Earth-Human Systems Scientist at the Joint Global Change Research Institute (PNNL) and the Center for Global Sustainability (UMD). Canoeist. Singer. Comments are my own. He/him/his.

Posts Replies Media

Steve Smith @stevenjsmith.bsky.social · 10/12/2024

While models can't incorporate this new information in time for CMIP7 fast track simulations, the implications of this new information should be evaluated in parallel.

Slide discusses what type of guidance should be provided to modelers

210

Steve Smith @stevenjsmith.bsky.social · 10/12/2024

While the weighted average regional height distribution varies somewhat by region, the emissions height is higher than the AeroCOM assumptions used by many modelers.

Slide shows regionally averaged results from Guevara et al.

100

Steve Smith @stevenjsmith.bsky.social · 10/12/2024

While we will release data out to 2023 in January, the last 1-2 years of this data, in particular, contain many assumptions and approximations. This means these values are more likely to change in future releases.A

Slide describes the reasons that the most recent emission estimates are particularly uncertain.

000

Steve Smith @stevenjsmith.bsky.social · 10/12/2024

Emissions out to 2022 are now available for evaluation and testing. CMIP7 historical emissions will be released in Jan 2025. Extension from 2021 through 2024 released in July 2025 as part of future scenario data.

Slide describes current and future CEDS air pollutant (e.g. SLCF) emissions data

100

Steve Smith @stevenjsmith.bsky.social · 10/12/2024

In this new approach for CMIP the "historical" scenario will stop before the latest full year (likely in 2021). Scenario data will start with several years of common data before diverging. This achieves two things:

Figure outlines new approach where historical" scenario will stop before the latest full year (likely in 2021).

100

Steve Smith @stevenjsmith.bsky.social · 10/12/2024

Slides from my #AGU24 talk describing a new CMIP approach and new air pollutant (a.k.a. SLCF) emissions data.

140

Steve Smith @stevenjsmith.bsky.social · 08/12/2024

#AGU24

020