Pathways to limiting global warming to 1.5°C

A super relevant point related to our climate future emerges from the IPCC Special Report on 1.5°C warming that I wrote about before. The report shows that our environment is likely to be much more hospitable for human habitation if we can limit global warming to the ambitious target of 1.5°C rather than the also ambitious 2.0°C warming targets that was the goal of the Paris Climate Agreement.

An interesting point arising from this report though was the understanding that to limit global warming to 1.5°C we will need ways to remove some of our past and ongoing greenhouse gas emissions from the atmosphere. In essence, the longer we delay in cutting emissions (as we are just now) the more we will need to rely on technologies to suck greenhouse gases out of the atmosphere. This is of massive significance, as  these technologies are not yet available at scale to do the work we require of them.

To break this down and explain it more, lets first have a look at the key graphic from the Report Summary for Policy Makers:

The 4 pathways shown are those with no or limited overshoot of 1.5°C warming, which requires that global net anthropogenic CO2 emissions decline by about 45% from 2010 levels by 2030 reaching net zero around 2050 in all cases.  However the way we achieve this is different in the 4 pathways.

Importantly, all pathways that limit global warming to 1.5°C with limited or no overshoot project the use of carbon dioxide removal (CDR) on the order of 100–1000 Gt CO2 over the 21st century.

There are 3 main categories of carbon dioxide removal strategies include carbon capture and storage (a.k.a. CCS), which is the process of capturing the CO2 released from the exhaust gas of fuel combustion or other oxidative process and depositing the CO2 in geological storages. Bio-energy with carbon capture and storage (a.k.a. BECCS) is the combination of bioenergy use and capturing and storing the biogenic CO2 leading to a net CO2 sink. These technologies are not yet up to technological and industrial readiness levels that would allow for deploying them on the kind of considered scale. The final option is to drawdown carbon from the atmosphere through changing practices in agriculture, forestry, and other land use activities (a.k.a. AFOLU).

A pathway in which we slash emissions immediately (P1) requires the least reliance on drawdown of greenhouse gases from the atmosphere, while if we delay reducing emissions, as we are currently, then the pathway represented by P4 sees us requiring substantial drawdown of greenhouse gases from the atmosphere. Clearly there is a serious message here: we need to slash our emissions but every day we delay on this requires us to be more technologically ready to  suck greenhouse gases from the atmosphere in large quantities and lock it away in soil, structures and any available long term store.


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What of women in science?

On women in science day (11th of February if you don’t know) the UK embassy in Vienna released this video of a discussion with Prof Gina Moseley and myself about women in science:

I was grateful of the chance to talk about this topic. We have many female students but representation of any minority in the upper levels of academia still lags behind. I think we will get there though and it will be for the benefit of all science and society. They did cut a comment I made about the fact that the #metoo movement is unfortunately definitely still of relevance in academia. This has to go, and strong communities, support from both male and female colleagues and institutional and legal support are all slowly nudging things in the right direction. Keep up the good fight!

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JIRP student presentations at the IGS Global Seminar Series

Amidst the chaos wreaked by COVID-19 some good things came out and one of them is the IGS Global Seminar Series. We at JIRP were particularly chuffed to have a slot set aside for our students presentations from their research projects on the icefield during summer 2021. This cohort of students had to deal with some pretty stringent expedition modifications due to the global pandemic and they handled it spectacularly, as did the whole JIRP organisational team.

Check out their science talks here:


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Engaging Rural and Alaska Native Undergraduates and Youth in Arctic STEM

I just came across this nice summary of the outcomes of the workshop Engaging Rural and Alaska Native Undergraduates and Youth in Arctic STEM on the ARCUS website:

Also included is this nice summary graphic by Sarah Crowley, Raining Joy Arts:

Workshop Final Report (pdf)

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Canadian connections

I loved my time (many years ago now!) living and working in Edmonton Canada, in the ice core lab of the Earth and Atmophperic Science department and the Geological Service of Canada in Ottawa.

So I was super happy to be invited last month to participate in the Austrian Academy of Sciences Joint Academy Day Panel discussion with Canadian scientists.

At the same time the Austrian Cultural Forum Ottawa released a series of videos showcasing the activities of young Austrian scientists, and I made a contribution discussing mountain glaciers.

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