The Roman World used trade of grain (actual virtual water trade) as a means to be more resilient against climate change. At the same time, as population grew as a result of a steady supply of food, it became more dependent on trade and thus more sensitive to political or climatological disturbances of the trade network. These are the main conclusions from a study by
The Roman World used trade of grain (actual virtual water trade) as a means to be more resilient against climate change. At the same time, as population grew as a result of a steady supply of food, it became more dependent on trade and thus more sensitive to political or climatological disturbances of the trade network. These are the main conclusions from a study by Brian Dermody and coworkers from the Netherlands and the US.
The paper appeared in Hydrology and Earth System Sciences:
Dermody, B. J., van Beek, R. P. H., Meeks, E., Klein Goldewijk, K., Scheidel, W., van der Velde, Y., Bierkens, M. F. P., Wassen, M. J., and Dekker, S. C.: A virtual water network of the Roman world, Hydrol. Earth Syst. Sci., 18, 5025-5040, doi:10.5194/hess-18-5025-2014, 2014.
See the press release of EGU!
It got quite some media attention. For instance in Smithsonian Magazine.
You can follow our work during AGU 2014. Following is a list of sessions, orals and posters that we are involved in. Maybe see you there!
Monday December 15 2014
14:10-14:25 Moscone West 2010: H13L-03 Global Depletion of Groundwater Resources: Past and Future Analyses (Marc Bierkens et al., Invited)
Tuesday December 16 2014
8:00 – 12:20 Moscone West Poster Hall: G21B-0446 Comparing Tide Gauge Observations to Regional Patterns of Sea-Level Change (1961–2003) (Aimee Slangen: et al. with Yoshi Wada)
8:00 – 12:20 Moscone West Poster: GC21B-0532 Linking Groundwater Use and Stress to Specific Crops Using the Groundwater Footprint in the Central Valley and High Plains Aquifer Systems, U.S. (Laurent Esnault et al. with Yoshi Wada, Rens van Beek and Marc Bierkens)
10:30-12:20 Moscone West 3016: GC22F The Effects of Anthropogenic Land-Use and Land-Cover Change on Local to Global Climate: Forcings and Feedbacks from the Past to the Future II (session co-convened by Yoshi Wada)
16:00 – 18:00 Moscone West 3003: GC24A Global and Regional Food and Water Security Under Increasing Socioeconomic Pressure and Changing Climate II (Session convened by Yoshi Wada)
16:30 – 16:45 Moscone West 3014: H24F-07 Simulating subsurface heterogeneity improves large-scale water resources predictions (Andreas Hartmann et al. with Yoshi Wada).
Wednesday December 17 2014
10:20 – 10:35 Moscone West 3011: H32E-01 Global Modeling of Withdrawal, Allocation and Consumptive Use of Surface Water and Groundwater Resources (Yoshi Wada et al. Invited)
13:40-18:00 Moscone West Poster Hall: H33G Advances in Process-Based, Very High Resolution Hydrological Modeling Across Scales (Poster session co-convened by Marc Bierkens)
13:40 – 14:00 Moscone West 3014: H33K-01 Sustainability of global groundwater and surface water use: past reconstruction and future projections (Yoshi Wada et al. Invited)
14:00 – 14:15 Moscone West 3014: H33K-02 Reconstruction of Groundwater Depletion Using a Global Scale Groundwater Model (Inge de Graaf et al)
17:15 – 17:30 Moscone West 3010: H34C-06 eWaterCycle: Live Demonstration of an Operational Hyper Resolution Global Hydrological Model (Niels Drost et al. with Marc Bierkens and Edwin Sutanudjaja)
Thursday December 18 2014
8:00 – 12:20 Moscone West Poster hall: H41G-0913 Modeling Changing Morphology and Density Dependent Groundwater Flow in a Dynamic Environment: case study (Sebastian Huizer et al. with Marc Bierkens and Gu Oude-Essink)
10:20 – 10:35 Moscone West 3022: PCR-GLOBWB version 2.0: A High Resolution Integrated Global Hydrology and Water Resources Model (Edwin Sutanudjaja et al.)
11:35 – 11:50 Moscone West 3004: H42B-06 Increases in River Runoff Projected for High Mountain Asia’s River Basins during the 21st Century (Walter Immerzeel et al., Invited) —
17:20 – 17:40 Moscone West 3005: C44A-06 High-Resolution Monitoring of Himalayan Glacier Dynamics Using Unmanned Aerial Vehicles (Walter Immerzeel et al. Invited)
Friday December 19 2014
13:40 – 13:55 Moscone West 3014: H53M-01 Hyper-Resolution Global Hydrological Modelling: Rationale, Challenges and What’s Next (Marc Bierkens, Invited)
17:30 – 17:45 H54C-07 Moscone West 3011: Ensemble Evaporation Predictions from Remote Sensing in the Nile Basin (Wim Bastiaanssen et al., Invited with Yoshi Wada)