Pep Canadell

@pepcanadell

Exe. Dir., Global Carbon Project, ; human effects on carbon & other biogeochem. cycles, climate change, decarbonization pathways, global ecology.

Australia
globalcarbonproject.org
Joined November 2013
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  1. Pinned Tweet
    Jun 24

    THREAD Ecosystem collapse & abrupt changes are emerging across the world in response to climate change and increase extremes. We have compiled a collection of examples in a new book, including how to build resilience or manage transitions when possible

    15 replies 198 retweets 462 likes
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  2. Retweeted
    Jun 24

    New book "Ecosystem Collapse & Climate Change" edited by JG Canadell & RB Jackson looks @ cases of ecosystem collapse where is playing a role and guiding transition towards more resilience amidst rapid changes.

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    28 retweets 59 likes
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  3. Retweeted
    Dec 6

    Thread 1/n From the new Australian forest fire paper published last week here are some additional figures that ended up in the Suppl. Inf. Three independent datasets show a consistent picture of increasing forest burned area over the past three decades

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  4. Dec 9

    Australian forests will store less carbon as climate change worsens and severe fires become more common via

    3 replies 10 retweets 20 likes
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  5. Retweeted
    Dec 8

    1/3 The largest ever recorded mega-fire season in Australia was in 2011, right after two consecutive wet years (La Nina), with about 100 million hectares burned across the continent, mostly rangelands. That is about 4 times the area of the UK, in one year.

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  6. Retweeted
    Dec 8

    🔥 THREAD: global fire patterns 🔥 Recent drought-related have underscored how change can increase fire risks regionally. But various factors (e.g. human ignitions/suppression, vegetation growth) control fire, making regional fire patterns horribly complex!

    6 replies 57 retweets 142 likes
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  7. Dec 8

    3/3 MODIS hotspots See thread on forest fires: Open access:

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  8. Dec 8

    2/3 The intensity of El Nino/La Nina events is on the rise with climate change (not the frequency), and so is the future of mega-fire seasons in Australia. The 3 biggest La Ninas on instrumental record have occurred over the past 50 yrs; we are in the middle of the 4th one.

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  9. Dec 8

    1/3 The largest ever recorded mega-fire season in Australia was in 2011, right after two consecutive wet years (La Nina), with about 100 million hectares burned across the continent, mostly rangelands. That is about 4 times the area of the UK, in one year.

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  10. Retweeted
    Nov 4

    As part of the new Global Carbon Budget 2021 , we have updated the Remaining Carbon Budgets based on IPCC WGI AR6 If CO2 emissions were to remain at 2021 levels, we have 11 years to 1.5C, and 32 years to 2C Figures

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  11. Dec 6

    8/8 Open access to the paper: And an article in The Conversation:

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  12. Dec 6

    7/n The spatial distribution of forest burned area by wildfires is quite consistent between the two main data products we used, and despite we know that AVHRR misses quite a few small and understory-only fires.

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  13. Dec 6

    6/n Keeping in mind the limitations of correlation analyses to establish the causal influence of drivers of the observed fire activity, we find strong links between forest burned area & 2 fire weather indices affected by climate change, but not with modelled biomass/fuel loads

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  14. Dec 6

    5/n The length of time between fires has rapidly decreased over the past four decades. However, consistent with the previous figure, Western Australia has kept a rather constant fire regime over time. Is it because of the proportionally higher hazard reduction burns?

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  15. Dec 6

    4/n We disaggregated the data by states & territories and separated wildfires from prescribed burns. Notice that hazard reduction fires in Western Australia burn more area than wildfires do. Are prescribed burns keeping wildfires under control?

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  16. Dec 6

    3/n Comparing the mean annual burned area of the first part of the period (1988-2001) with the second one (2002-2019), burned area has increased by 3-fold in autumn and by 5-fold in winter

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  17. Dec 6

    2/n Seasonal evolution of forest burned area in Australia, with summer followed by spring having the most burned area. However, autumn and winter show the strongest growth, albeit coming from a very low base of little to no fire earlier in the period studied.

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  18. Dec 6

    Thread 1/n From the new Australian forest fire paper published last week here are some additional figures that ended up in the Suppl. Inf. Three independent datasets show a consistent picture of increasing forest burned area over the past three decades

    1 reply 17 retweets 16 likes
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  19. Retweeted
    Dec 6

    Why India is neglecting its methane problem

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  20. Dec 1

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  21. Dec 1

    @SEFiresScience

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