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10. Peak grain forecasts for the US High Plains amid withering waters

Author

Mrad, Assaad, Katul, Gabriel G., Levia, Delphis F., Guswa, Andrew J., Boyer, Elizabeth W., Bruen, Michael, Carlyle-Moses, Darryl E., Coyte, Rachel, Creed, Irena F., van de Giesen, Nick, Grasso, Domenico, Hannah, David M., Hudson, Janice E., Humphrey, Vincent, Iida, Shin’ichi, Jackson, Robert B., Kumagai, Tomo’omi, Llorens, Pilar, Michalzik, Beate, Nanko, Kazuki, Peters, Catherine A., Selker, John S., Tetzlaff, Doerthe, Zalewski, Maciej, and Scanlon, Bridget R.

Published
2020

20. Homogenization of the terrestrial water cycle

Author

Levia, Delphis F., Creed, Irena F., Hannah, David M., Nanko, Kazuki, Boyer, Elizabeth W., Carlyle-Moses, Darryl E., van de Giesen, Nick, Grasso, Domenico, Guswa, Andrew J., Hudson, Janice E., Hudson, Sean A., Iida, Shin’ichi, Jackson, Robert B., Katul, Gabriel G., Kumagai, Tomo’omi, Llorens, Pilar, Ribeiro, Flavio Lopes, Pataki, Diane E., Peters, Catherine A., Carretero, Daniel Sanchez, Selker, John S., Tetzlaff, Doerthe, Zalewski, Maciej, and Bruen, Michael

Published
2020
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23. Reply to comment by Keith J. Beven and Hannah L. Cloke on �Hyperresolution global land surface modeling: Meeting a grand challenge for monitoring Earth's terrestrial water�

Author

Wood, Eric F, Roundy, Joshua K, Troy, Tara J, van Beek, Rens, Bierkens, Marc, Blyth, Eleanor, de Roo, Ad, Döll, Petra, Ek, Mike, Famiglietti, James, Gochis, David, van de Giesen, Nick, Houser, Paul, Jaffe, Peter, Kollet, Stefan, Lehner, Bernhard, Lettenmaier, Dennis P, Peters-Lidard, Christa D, Sivapalan, Murugesu, Sheffield, Justin, Wade, Andrew J, and Whitehead, Paul

Subjects
Modeling
Published
2012

27. Hyperresolution global land surface modeling: Meeting a grand challenge for monitoring Earth's terrestrial water

Author

Wood, Eric F, Roundy, Joshua K, Troy, Tara J, van Beek, L. P. H, Bierkens, Marc F. P, Blyth, Eleanor, de Roo, Ad, Döll, Petra, Ek, Mike, Famiglietti, James, Gochis, David, van de Giesen, Nick, Houser, Paul, Jaffé, Peter R, Kollet, Stefan, Lehner, Bernhard, Lettenmaier, Dennis P, Peters-Lidard, Christa, Sivapalan, Murugesu, Sheffield, Justin, Wade, Andrew, and Whitehead, Paul

Subjects
multiple source assessment, nitrogen model, catchments Inca, part I, inundation, equations, hydrology, flow, consequences, simulation
Abstract

Monitoring Earth's terrestrial water conditions is critically important to many hydrological applications such as global food production; assessing water resources sustainability; and flood, drought, and climate change prediction. These needs have motivated the development of pilot monitoring and prediction systems for terrestrial hydrologic and vegetative states, but to date only at the rather coarse spatial resolutions (∼10–100 km) over continental to global domains. Adequately addressing critical water cycle science questions and applications requires systems that are implemented globally at much higher resolutions, on the order of 1 km, resolutions referred to as hyperresolution in the context of global land surface models. This opinion paper sets forth the needs and benefits for a system that would monitor and predict the Earth's terrestrial water, energy, and biogeochemical cycles. We discuss six major challenges in developing a system: improved representation of surface-subsurface interactions due to fine-scale topography and vegetation; improved representation of land-atmospheric interactions and resulting spatial information on soil moisture and evapotranspiration; inclusion of water quality as part of the biogeochemical cycle; representation of human impacts from water management; utilizing massively parallel computer systems and recent computational advances in solving hyperresolution models that will have up to 109 unknowns; and developing the required in situ and remote sensing global data sets. We deem the development of a global hyperresolution model for monitoring the terrestrial water, energy, and biogeochemical cycles a “grand challenge” to the community, and we call upon the international hydrologic community and the hydrological science support infrastructure to endorse the effort.

Published
2011

37. The eWaterCycle platform for open and FAIR hydrological collaboration

Author

Hut, Rolf, primary, Aerts, Jerom, additional, Wiersma, Pau, additional, Hoogelander, Vincent, additional, van de Giesen, Nick, additional, Drost, Niels, additional, Kalverla, Peter, additional, van Werkhoven, Ben, additional, Verhoeven, Stefan, additional, Alidoost, Fakhereh (Sarah), additional, Vreede, Barbara, additional, and Liu, Yang, additional

Published
2023
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45. Christian Huygens and Perrault’s 'De l’origine des fontaines'

Author

Van De Giesen, Nick

Abstract

Pierre Perrault is often seen as the first modern hydrologist. In his famous work “De l'origine des fontaines”, he reviews the many theories concerning the hydrological cycle that classical philosophers had put forward. It had especially bothered most classical philosophers that the little bit of intermittent rain could not really give rise to the continuous flow as seen in rivers. Therefore, so it was reasoned, sources had to be fed differently, for example through water from the sea being pushed up and filtered through the mountains. Perrault, however, went on to show that for the Seine there was about six times more rainfall than runoff, thereby producing the first quantitative hydrological study. To the defense of the classics it should be mentioned that they tended to live in Karstic areas. Sadly, also in modern times, many “philosophers” still prefer to make up hydrological models instead of going out to actually measure stocks and fluxes.“De l'origine des fontaines” was dedicated to Christian Huygens, a Dutch scholar and diplomat, who used to make regular visits to the Perrault household in Paris, which also included Charles Perrault. Charles was not only collector and publisher of folk tales such as Cinderella, but also an important voice in overturning the blind faith in the classics. Pierre’s work also includes a long letter to Huygens in which he posed several questions. In the Huygens archive, the reply also exists but this reply is, as far as can be seen, not really known in the literature on the history of hydrology. In this presentation, the reply will be presented and analyzed. It is never made explicit what the discussions were that Pierre and Christian undoubtedly had but much can be inferred. It seems that the main contribution of Christian was to convince Pierre that it was not possible that the sources worked like a syphon. This was just the period in which it was shown that the “horror vacui” was not a real thing. The discussion focused especially on the generalizability of theories and observations. This led Christian to write, somewhat famously: “I believe that we do not know anything for certain, but everything probably”. He then goes on to present a well formulated Bayesian world view avant la lettre. Undoubtedly, Christian also encouraged Pierre to go out and measure the water balance of the Seine, leading to what can be seen as the first modern hydrological study., The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)

Published
2023

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