In the current context of global change, assessing the impact of climate variability and changes on hydrological systems and water resources is increasingly crucial for society to better-adapt to future shifts in water resources as well as extreme conditions (floods and droughts). However, hitherto, important sources of uncertainties have been neglected in forecasting climate impacts on hydrological systems, especially uncertainties associated with internal/natural climate variability, whose contribution to near-future changes could be as important as forced anthropogenic climate changes at the regional scales. Internal climate modes of variability (e.g. ENSO, NAO, AMO) and their impact on the continent are not properly reproduced in the current global climate models, leading to large underestimations of decadal climate and hydroclimatic variability at the global scale. At the same time, hydrological response strongly depends on catchment properties, whose interactions with climate variability are little understood at the decadal timescales. These factors altogether reduce significantly our ability to understand long-term hydrological variability and to improve projection and reconstruction of future and past hydrological changes on which improvement of adaption scenarios depends.
We welcome abstracts capturing recent insights for understanding past or future impacts of large-scale climate variability on hydrological systems and water resources as well as newly developed projection and reconstruction scenarios. Results from model intercomparison studies are encouraged.
We hope that you are all well, and ready to participate to the EGU 2020 “sharing geoscience online”.
Our session "HS2.4.6/CL2.29/NH1.21: Understanding the links between hydrological variability and internal/natural climate variability" is scheduled tomorrow (Thursday 07) at 10:45-12:30 (CET time).
As you might have noticed in the last days, chairing the online chat requires some managements. With the convener team, we therefore agreed on an organisation plan to enable everyone to present their displays, and discuss it smoothly with the session participants.
First, we would appreciate if you could upload your presentation materials as soon as possible. Because there is not much time per presentation in the chats, participants are reviewing materials in advance of the scheduled sessions, in order to maximise discussion time.
If the first author of your display will not be available, we request that you let us know in advance, who is attending, so we can be sure all expected presenters are online.
When posting your questions, as well as replying, we recommend you begin your questions/answers with @1stAuthorName (e.g. in my case @Bastien). This will make sure that the question/answer is addressed to the right correspondent.
Below are some information on the conduct of our session:
i) We will go through ONLY the presentations which have uploaded materials for displays, and we will follow the order provided on the session programme;
ii) After a brief introduction, we will give 10 minutes to all participants to look through the different displays;
iii) We will then call each author, who will have 2-3 minutes to tell us about their work. As this is not that easy, we strongly recommend you to prepare few highlights (context + bullet points; max. 6 sentences) in advance. So, you can just paste it at the time.
iv) We then will allow 2-3 minutes for questions to each author. Again, we recommend you to prepare any questions for the other authors in advance.
v) Finally, we will thank all the participants, and call for online comments on the website.
We hope to “see” you tomorrow morning, and we hope this will be a nice experience for everyone.
To help with this, we would appreciate if you could upload your material as soon as you can. Bear in mind that it can be updated at anytime.
Note that the time allocated to the presentation and questions might have to be adjusted tomorrow, depending on the final number of displays
Bastien, Jean-Philippe, Katie and Nicolas