A blog of Javier Fluixa-Sanmartin

Author: JavierFluixa

Webinar at IHE Delft

You can watch the online talk called “Are we prepared for what is coming? Dam safety management under the influence of climate change effects” that I gave for IHE Delft on the 20th of November 2020 within the framework of the River Basin Development online seminars.

As part of the Climate change, hydrology and geosciences talks, I presented the main aspects and findings of my thesis.

These online seminars are organized on behalf of the River Basin Development chair group. You can check here the rest of the seminars organized by the group (user registration and enrolment are necessary).

The new AR6 Climate Change 2021 has been released

The IPCC’s Sixth Assessment Report (AR6) on the physical science basis of climate change has been released and is available for download here. The Working Group I contribution to the AR6 addresses the most up-to-date physical understanding of the climate system and climate change, bringing together the latest advances in climate science, and combining multiple lines of evidence from paleoclimate, observations, process understanding, and global and regional climate simulations.

These are some of the conclusions extracted from the Summary for Policymakers of the AR6:

  • It is unequivocal that human influence has warmed the atmosphere, ocean and land.
  • Human-induced climate change is already affecting many weather and climate extremes in every region across the globe.
  • Global surface temperature will continue to increase until at least the mid-century under all emissions scenarios considered.
  • Many changes in the climate system (e.g., heavy precipitation) become larger in direct relation to increasing global warming.
  • Continued global warming is projected to further intensify the global water cycle, including its variability, global monsoon precipitation and the severity of wet and dry events.
  • Many changes due to past and future greenhouse gas emissions are irreversible for centuries to millennia, especially changes in the ocean, ice sheets and global sea level.
  • Natural drivers and internal variability will modulate human-caused changes, especially at regional scales and in the near term. These modulations are important to consider in planning for the full range of possible changes.
  • With further global warming, every region is projected to increasingly experience concurrent and multiple changes in climatic impact-drivers.
  • Low-likelihood outcomes, such as ice sheet collapse, abrupt ocean circulation changes, some compound extreme events and warming substantially larger than the assessed very likely range of future warming cannot be ruled out and are part of risk assessment.
  • Scenarios with very low or low GHG emissions (SSP1-1.9 and SSP1-2.6) lead within years to discernible effects on greenhouse gas and aerosol concentrations, and air quality, relative to high and very high GHG emissions scenarios (SSP3-7.0 or SSP5-8.5).

Regarding the impact of river flooding on protective infrastructures, the AR6 mentions the need for a re-evaluation of design standards based around flood magnitudes or precipitation intensity-duration-frequency relationships. The report even cites one of the papers of my PhD thesis (Review article: Climate change impacts on dam safety) that you can consulte here.

Welcome!

Welcome to my new blog. I want to share the findings of my last works on climate change impacts on dam safety.

I will include my publications, and other relevant informations about this topic.

Your comments and observations will be highly appreciated, so do not hesitate to contact me via the Contact form.