Your search found 5 records
1 Jaramillo, F.; Destouni, G. 2015. Local flow regulation and irrigation raise global human water consumption and footprint. Science, 350(6265):1248-1251. [doi: https://doi.org/10.1126/science.aad1010]
Water use ; Water footprint ; Freshwater ; Runoff ; Irrigation ; Evapotranspiration ; Hydroclimatology ; Catchment areas
(Location: IWMI HQ Call no: e-copy only Record No: H047405)
(0.89 MB)
Flow regulation and irrigation alter local freshwater conditions, but their global effects are highly uncertain. We investigated these global effects from 1901 to 2008, using hydroclimatic observations in 100 large hydrological basins. Globally, we find consistent and dominant effects of increasing relative evapotranspiration from both activities, and decreasing temporal runoff variability from flow regulation. The evapotranspiration effect increases the long-term average human consumption of fresh water by 3563 ± 979 km3/ year from 1901–1954 to 1955–2008. This increase raises a recent estimate of the current global water footprint of humanity by around 18%, to 10,688 ± 979 km3/year. The results highlight the global impact of local water-use activities and call for their relevant account in Earth system modeling.
2 Liu, D.; Wang, X.; Aminjafari, S.; Yang, W.; Cui, B.; Yan, S.; Zhang, Y.; Zhu, J.; Jaramillo, F.. 2020. Using InSAR [Interferometric Synthetic Aperture Radar] to identify hydrological connectivity and barriers in a highly fragmented wetland. Hydrological Processes, 14p. (Online first) [doi: https://doi.org/10.1002/hyp.13899]
Wetlands ; Hydrological factors ; SAR (radar) ; Radar imagery ; Water levels ; Satellites ; Remote sensing ; Interferometry ; Barriers ; Ecosystems ; Grasslands ; Vegetation / China / Baiyangdian Wetland
(Location: IWMI HQ Call no: e-copy only Record No: H049975)
https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.13899
https://vlibrary.iwmi.org/pdf/H049975.pdf
https://vlibrary.iwmi.org/pdf/H049975.pdf
(3.71 MB) (3.71 MB)
Hydrological connectivity is a critical determinant of wetland functions and health, especially in wetlands that have been heavily fragmented and regulated by human activities. However, investigating hydrological connectivity in these wetlands is challenging due to the costs of high-resolution and large-scale monitoring required in order to identify hydrological barriers within the wetlands. To overcome this challenge, we here propose an interferometric synthetic aperture radar (InSAR)-based methodology to map hydrologic connectivity and identify hydrological barriers in fragmented wetlands. This methodology was applied along 70 transects across the Baiyangdian, the largest freshwater wetland in northern China, using Sentinel 1A and 1B data, covering the period 2016–2019. We generated 58 interferograms providing information on relative water level changes across the transects that showed the high coherence needed for the assessment of hydrological connectivity. We mapped the permanent and conditional (temporary) barriers affecting connectivity. In total, 11% of all transects are permanently disconnected by hydrological barriers across all interferograms and 58% of the transects are conditionally disconnected. Areas covered by reed grasslands show the most undisturbed hydrological connectivity while some of these barriers are the result of ditches and channels within the wetland and low water levels during different periods of the year. This study highlights the potential of the application of Wetland InSAR to determine hydrological connectivity and location of hydrological barriers in highly fragmented wetlands, and facilitates the study of hydrological processes from large spatial scales and long-time scales using remote sensing technique.
3 Roth, N.; Jaramillo, F.; Wang-Erlandsson, L.; Zamora, D.; Palomino-Angel, S.; Cousins, S. A. O. 2021. A call for consistency with the terms ‘wetter’ and ‘drier’ in climate change studies. Environmental Evidence, 10:8. [doi: https://doi.org/10.1186/s13750-021-00224-0]
Climate change ; Hydroclimate ; Ecosystems ; Precipitation ; Drought ; Temperature ; Water availability ; Evapotranspiration ; Soil moisture
(Location: IWMI HQ Call no: e-copy only Record No: H050323)
https://environmentalevidencejournal.biomedcentral.com/track/pdf/10.1186/s13750-021-00224-0.pdf
https://vlibrary.iwmi.org/pdf/H050323.pdf
https://vlibrary.iwmi.org/pdf/H050323.pdf
(1.03 MB) (1.03 MB)
Ongoing and future hydroclimatic changes have large environmental and societal impacts. In terrestrial ecosystems, these changes are usually described with the terms ‘wetter’ and ‘drier’, which refer to the change in the quantity and/or presence of water, either as water fluxes or stocks. We conducted a literature review of almost 500 recent climate change studies to quantitatively investigate the consistency of the use of these terms across disciplines, regarding the hydroclimatic variables they are related to. We found that although precipitation is prevalently used to describe ‘wetter’ and ‘drier’ conditions, many other variables are also used to refer to changes in water availability between research fields, pointing to a varied perspective on the use of these terms. Some studies do not define the terms at all. In order to facilitate meta-analyses across disciplines, we therefore highlight the need to explicitly state which hydroclimatic variables authors are referring to. In this way, we hope that the terms ‘wetter’ and ‘drier’ used in scientific studies are easier to relate to hydroclimatic processes, which should facilitate the application by authorities and policy makers.
4 Wang-Erlandsson, L.; Tobian, A.; van der Ent, R. J.; Fetzer, I.; te Wierik, S.; Porkka, M.; Staal, A.; Jaramillo, F.; Dahlmann, H.; Singh, C.; Greve, P.; Gerten, D.; Keys, P. W.; Gleeson, T.; Cornell, S. E.; Steffen, W.; Bai, X.; Rockstrom, J. 2022. A planetary boundary for green water. Nature Reviews Earth and Environment, 3(6):380-392. [doi: https://doi.org/10.1038/s43017-022-00287-8]
Freshwater ; Water availability ; Climate change ; Resilience ; Risk ; Soil moisture ; Precipitation ; Vegetation ; Evaporation ; Hydroclimatology ; Biogeochemical cycle ; Carbon cycle ; Ecosystems ; Governance ; Deforestation ; Drylands
(Location: IWMI HQ Call no: e-copy only Record No: H051114)
(1.67 MB)
Green water — terrestrial precipitation, evaporation and soil moisture — is fundamental to Earth system dynamics and is now extensively perturbed by human pressures at continental to planetary scales. However, green water lacks explicit consideration in the existing planetary boundaries framework that demarcates a global safe operating space for humanity. In this Perspective, we propose a green water planetary boundary and estimate its current status. The green water planetary boundary can be represented by the percentage of ice-free land area on which root-zone soil moisture deviates from Holocene variability for any month of the year. Provisional estimates of departures from Holocene-like conditions, alongside evidence of widespread deterioration in Earth system functioning, indicate that the green water planetary boundary is already transgressed. Moving forward, research needs to address and account for the role of root-zone soil moisture for Earth system resilience in view of ecohydrological, hydroclimatic and sociohydrological interactions.
5 Arheimer, B.; Cudennec, C.; Castellarin, A.; Grimaldi, S.; Heal, K. V.; Lupton, C.; Sarkar, A.; Tian, F.; Onema, J.-M. K.; Archfield, S.; Blöschl, G.; Chaffe, P. L. B.; Croke, B. F. W.; Dembélé, Moctar; Leong, C.; Mijic, A.; Mosquera, G. M.; Nlend, B.; Olusola, A. O.; Polo, M. J.; Sandells, M.; Sheffield, J.; van Hateren, T. C.; Shafiei, M.; Adla, S.; Agarwal, A.; Aguilar, C.; Andersson, J. C. M.; Andraos, C.; Andreu, A.; Avanzi, F.; Bart, R. R.; Bartosova, A.; Batelaan, O.; Bennett, J. C.; Bertola, M.; Bezak, N.; Boekee, J.; Bogaard, T.; Booij, M. J.; Brigode, P.; Buytaert, W.; Bziava, K.; Castelli, G.; Castro, C. V.; Ceperley, N. C.; Chidepudi, S. K. R.; Chiew, F. H. S.; Chun, K. P.; Dagnew, A. G.; Dekongmen, B. W.; del Jesus, M.; Dezetter, A.; do Nascimento Batista, J. A.; Doble, R. C.; Dogulu, N.; Eekhout, J. P. C.; Elçi, A.; Elenius, M.; Finger, D. C.; Fiori, A.; Fischer, S.; Förster, K.; Ganora, D.; Ellouze, E. G.; Ghoreishi, M.; Harvey, N.; Hrachowitz, M.; Jampani, Mahesh; Jaramillo, F.; Jongen, H. J.; Kareem, K. Y.; Khan, U. T.; Khatami, S.; Kingston, D. G.; Koren, G.; Krause, S.; Kreibich, H.; Lerat, J.; Liu, J.; de Brito, M. M.; Mahé, G.; Makurira, H.; Mazzoglio, P.; Merheb, M.; Mishra, A.; Mohammad, H.; Montanari, A.; Mujere, N.; Nabavi, E.; Nkwasa, A.; Alegria, M. E. O.; Orieschnig, C.; Ovcharuk, V.; Palmate, S. S.; Pande, S.; Pandey, S.; Papacharalampous, G.; Pechlivanidis, I.; Penny, G.; Pimentel, R.; Post, D. A.; Prieto, C.; Razavi, S.; Salazar-Galán, S.; Namboothiri, A. S.; Santos, P. P.; Savenije, H.; Shanono, N. J.; Sharma, A.; Sivapalan, M.; Smagulov, Z.; Szolgay, J.; Teng, J.; Teuling, A. J.; Teutschbein, C.; Tyralis, H.; van Griensven, A.; van Schalkwyk, A. J.; van Tiel, M.; Viglione, A.; Volpi, E.; Wagener, T.; Wang-Erlandsson, L.; Wens, M.; Xia, J. 2024. The IAHS science for solutions decade, with Hydrology Engaging Local People IN a Global world (HELPING). Hydrological Sciences Journal, 50p. (Online first) [doi: https://doi.org/10.1080/02626667.2024.2355202]
Hydrology ; Water scarcity ; Transdisciplinary research ; Local knowledge ; Water security ; Prediction ; Anthropocene ; Stakeholders ; Sustainable Development Goals
(Location: IWMI HQ Call no: e-copy only Record No: H052865)
https://www.tandfonline.com/doi/epdf/10.1080/02626667.2024.2355202?needAccess=true
https://vlibrary.iwmi.org/pdf/H052865.pdf
https://vlibrary.iwmi.org/pdf/H052865.pdf
(4.65 MB) (4.65 MB)
The new scientific decade (2023-2032) of the International Association of Hydrological Sciences (IAHS) aims at searching for sustainable solutions to undesired water conditions - may it be too little, too much or too polluted. Many of the current issues originate from global change, while solutions to problems must embrace local understanding and context. The decade will explore the current water crises by searching for actionable knowledge within three themes: global and local interactions, sustainable solutions and innovative cross-cutting methods. We capitalise on previous IAHS Scientific Decades shaping a trilogy; from Hydrological Predictions (PUB) to Change and Interdisciplinarity (Panta Rhei) to Solutions (HELPING). The vision is to solve fundamental water-related environmental and societal problems by engaging with other disciplines and local stakeholders. The decade endorses mutual learning and co-creation to progress towards UN sustainable development goals. Hence, HELPING is a vehicle for putting science in action, driven by scientists working on local hydrology in coordination with local, regional, and global processes.
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