ORCID Profile
0000-0002-6053-5379
Current Organisation
Global Institute for Water Security, University of Saskatchewan
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Publisher: American Meteorological Society
Date: 07-2015
DOI: 10.1175/2015BAMSSTATEOFTHECLIMATE.1
Abstract: Editors note: For easy download the posted pdf of the State of the Climate for 2014 is a very low-resolution file. A high-resolution copy of the report is available by clicking here. Please be patient as it may take a few minutes for the high-resolution file to download.
Publisher: Copernicus GmbH
Date: 23-08-2017
DOI: 10.5194/HESS-21-4169-2017
Abstract: Abstract. Over recent decades, the global population has been rapidly increasing and human activities have altered terrestrial water fluxes to an unprecedented extent. The phenomenal growth of the human footprint has significantly modified hydrological processes in various ways (e.g. irrigation, artificial dams, and water ersion) and at various scales (from a watershed to the globe). During the early 1990s, awareness of the potential for increased water scarcity led to the first detailed global water resource assessments. Shortly thereafter, in order to analyse the human perturbation on terrestrial water resources, the first generation of large-scale hydrological models (LHMs) was produced. However, at this early stage few models considered the interaction between terrestrial water fluxes and human activities, including water use and reservoir regulation, and even fewer models distinguished water use from surface water and groundwater resources. Since the early 2000s, a growing number of LHMs have incorporated human impacts on the hydrological cycle, yet the representation of human activities in hydrological models remains challenging. In this paper we provide a synthesis of progress in the development and application of human impact modelling in LHMs. We highlight a number of key challenges and discuss possible improvements in order to better represent the human–water interface in hydrological models.
Publisher: American Geophysical Union (AGU)
Date: 04-2006
DOI: 10.1029/2006GL025831
Publisher: Elsevier BV
Date: 05-2003
Publisher: Springer Science and Business Media LLC
Date: 25-11-2012
DOI: 10.1038/NCLIMATE1744
Publisher: American Geophysical Union (AGU)
Date: 05-2016
DOI: 10.1002/2015EA000142
Publisher: American Geophysical Union (AGU)
Date: 19-11-2019
DOI: 10.1029/2019AV000105
Publisher: American Meteorological Society
Date: 08-2013
DOI: 10.1175/2013BAMSSTATEOFTHECLIMATE.1
Abstract: Editors note: For easy download the posted pdf of the State of the Climate for 2012 is a very low-resolution file. A high-resolution copy of the report is available by clicking here. Please be patient as it may take a few minutes for the high-resolution file to download.
Publisher: Wiley
Date: 06-04-2023
DOI: 10.1111/GWAT.13305
Abstract: Groundwater resources are connected with social, economic, ecological, and Earth systems. We introduce the framing of groundwater‐connected systems to better represent the nature and complexity of these connections in data collection, scientific investigations, governance and management approaches, and groundwater education. Groundwater‐connected systems are social, economic, ecological, and Earth systems that interact with groundwater, such as irrigated agriculture, groundwater‐dependent ecosystems, and cultural relationships to groundwater expressions such as springs and rivers. Groundwater‐connected systems form social‐ecological systems with complex behaviors such as feedbacks, nonlinear processes, multiple stable system states, and path dependency. These complex behaviors are only visible through this integrated system framing and are not endogenous properties of physical groundwater systems. The framing is syncretic as it aims to provide a common conceptual foundation for the growing disciplines of socio‐hydrogeology, eco‐hydrogeology, groundwater governance, and hydro‐social groundwater analysis. The framing also facilitates greater alignment between the groundwater sustainability discourse and emerging sustainability concepts and principles. Aligning with these concepts and principles presents groundwater sustainability as more than a physical state to be reached and argues that place‐based and multifaceted goals, values, justice, knowledge systems, governance, and management must continually be integrated to maintain groundwater's social, ecological, and Earth system functions. The groundwater‐connected systems framing can underpin a broad, methodologically pluralistic, and community‐driven new wave of data collection and analysis, research, governance, management, and education. These developments, together, can invigorate efforts to foster sustainable groundwater futures in the complex systems groundwater is embedded within.
Publisher: Elsevier BV
Date: 09-2005
Publisher: American Meteorological Society
Date: 06-2011
DOI: 10.1175/1520-0477-92.6.S1
Abstract: Several large-scale climate patterns influenced climate conditions and weather patterns across the globe during 2010. The transition from a warm El Niño phase at the beginning of the year to a cool La Niña phase by July contributed to many notable events, ranging from record wetness across much of Australia to historically low Eastern Pacific basin and near-record high North Atlantic basin hurricane activity. The remaining five main hurricane basins experienced below- to well-below-normal tropical cyclone activity. The negative phase of the Arctic Oscillation was a major driver of Northern Hemisphere temperature patterns during 2009/10 winter and again in late 2010. It contributed to record snowfall and unusually low temperatures over much of northern Eurasia and parts of the United States, while bringing above-normal temperatures to the high northern latitudes. The February Arctic Oscillation Index value was the most negative since records began in 1950. The 2010 average global land and ocean surface temperature was among the two warmest years on record. The Arctic continued to warm at about twice the rate of lower latitudes. The eastern and tropical Pacific Ocean cooled about 1°C from 2009 to 2010, reflecting the transition from the 2009/10 El Niño to the 2010/11 La Niña. Ocean heat fluxes contributed to warm sea surface temperature anomalies in the North Atlantic and the tropical Indian and western Pacific Oceans. Global integrals of upper ocean heat content for the past several years have reached values consistently higher than for all prior times in the record, demonstrating the dominant role of the ocean in the Earth's energy budget. Deep and abyssal waters of Antarctic origin have also trended warmer on average since the early 1990s. Lower tropospheric temperatures typically lag ENSO surface fluctuations by two to four months, thus the 2010 temperature was dominated by the warm phase El Niño conditions that occurred during the latter half of 2009 and early 2010 and was second warmest on record. The stratosphere continued to be anomalously cool. Annual global precipitation over land areas was about five percent above normal. Precipitation over the ocean was drier than normal after a wet year in 2009. Overall, saltier (higher evaporation) regions of the ocean surface continue to be anomalously salty, and fresher (higher precipitation) regions continue to be anomalously fresh. This salinity pattern, which has held since at least 2004, suggests an increase in the hydrological cycle. Sea ice conditions in the Arctic were significantly different than those in the Antarctic during the year. The annual minimum ice extent in the Arctic—reached in September—was the third lowest on record since 1979. In the Antarctic, zonally averaged sea ice extent reached an all-time record maximum from mid-June through late August and again from mid-November through early December. Corresponding record positive Southern Hemisphere Annular Mode Indices influenced the Antarctic sea ice extents. Greenland glaciers lost more mass than any other year in the decade-long record. The Greenland Ice Sheet lost a record amount of mass, as the melt rate was the highest since at least 1958, and the area and duration of the melting was greater than any year since at least 1978. High summer air temperatures and a longer melt season also caused a continued increase in the rate of ice mass loss from small glaciers and ice caps in the Canadian Arctic. Coastal sites in Alaska show continuous permafrost warming and sites in Alaska, Canada, and Russia indicate more significant warming in relatively cold permafrost than in warm permafrost in the same geographical area. With regional differences, permafrost temperatures are now up to 2°C warmer than they were 20 to 30 years ago. Preliminary data indicate there is a high probability that 2010 will be the 20th consecutive year that alpine glaciers have lost mass. Atmospheric greenhouse gas concentrations continued to rise and ozone depleting substances continued to decrease. Carbon dioxide increased by 2.60 ppm in 2010, a rate above both the 2009 and the 1980–2010 average rates. The global ocean carbon dioxide uptake for the 2009 transition period from La Niña to El Niño conditions, the most recent period for which analyzed data are available, is estimated to be similar to the long-term average. The 2010 Antarctic ozone hole was among the lowest 20% compared with other years since 1990, a result of warmer-than-average temperatures in the Antarctic stratosphere during austral winter between mid-July and early September.
Publisher: Elsevier BV
Date: 12-2016
Publisher: American Meteorological Society
Date: 08-2017
DOI: 10.1175/2017BAMSSTATEOFTHECLIMATE.1
Abstract: Editor’s note: For easy download the posted pdf of the State of the Climate for 2017 is a low-resolution file. A high-resolution copy of the report is available by clicking here. Please be patient as it may take a few minutes for the high-resolution file to download.
Publisher: Copernicus GmbH
Date: 28-08-2018
DOI: 10.5194/ESSD-10-1551-2018
Abstract: Abstract. Global mean sea level is an integral of changes occurring in the climate system in response to unforced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g., acceleration) to be detected in one or more components. Study of the sea-level budget provides constraints on missing or poorly known contributions, such as the unsurveyed deep ocean or the still uncertain land water component. In the context of the World Climate Research Programme Grand Challenge entitled Regional Sea Level and Coastal Impacts, an international effort involving the sea-level community worldwide has been recently initiated with the objective of assessing the various datasets used to estimate components of the sea-level budget during the altimetry era (1993 to present). These datasets are based on the combination of a broad range of space-based and in situ observations, model estimates, and algorithms. Evaluating their quality, quantifying uncertainties and identifying sources of discrepancies between component estimates is extremely useful for various applications in climate research. This effort involves several tens of scientists from about 50 research teams/institutions worldwide (rand-challenges/gc-sea-level, last access: 22 August 2018). The results presented in this paper are a synthesis of the first assessment performed during 2017–2018. We present estimates of the altimetry-based global mean sea level (average rate of 3.1 ± 0.3 mm yr−1 and acceleration of 0.1 mm yr−2 over 1993–present), as well as of the different components of the sea-level budget (0.17882/54854, last access: 22 August 2018). We further examine closure of the sea-level budget, comparing the observed global mean sea level with the sum of components. Ocean thermal expansion, glaciers, Greenland and Antarctica contribute 42 %, 21 %, 15 % and 8 % to the global mean sea level over the 1993–present period. We also study the sea-level budget over 2005–present, using GRACE-based ocean mass estimates instead of the sum of in idual mass components. Our results demonstrate that the global mean sea level can be closed to within 0.3 mm yr−1 (1σ). Substantial uncertainty remains for the land water storage component, as shown when examining in idual mass contributions to sea level.
Publisher: Elsevier BV
Date: 2005
Publisher: Wiley
Date: 26-08-2021
Publisher: Elsevier BV
Date: 08-2023
Publisher: Wiley
Date: 03-2022
Publisher: Elsevier BV
Date: 2014
Publisher: American Geophysical Union (AGU)
Date: 05-05-2007
DOI: 10.1029/2007GL029804
Publisher: Springer Science and Business Media LLC
Date: 07-08-2017
DOI: 10.1038/S41598-017-07058-2
Abstract: The dwindling groundwater resource of India, supporting almost one fifth of the global population and also the largest groundwater user, has been of great concern in recent years. However, in contrary to the well documented Indian groundwater depletion due to rapid and unmanaged groundwater withdrawal, here for the first time, we report regional-scale groundwater storage (GWS) replenishment through long-term (1996–2014, using more than 19000 observation locations) in situ and decadal (2003–2014) satellite-based groundwater storage measurements in western and southern parts of India. In parts of western and southern India, in situ GWS (GWS obs ) has been decreasing at the rate of −5.81 ± 0.38 km 3 /year (in 1996–2001) and −0.92 ± 0.12 km 3 /year (in 1996–2002), and reversed to replenish at the rate of 2.04 ± 0.20 km 3 /year (in 2002–2014) and 0.76 ± 0.08 km 3 /year (in 2003–2014), respectively. Here, using statistical analyses and simulation results of groundwater management policy change effect on groundwater storage in western and southern India, we show that paradigm shift in Indian groundwater withdrawal and management policies for sustainable water utilization appear to have started replenishing the aquifers in western and southern parts of India.
Publisher: American Geophysical Union (AGU)
Date: 04-2017
DOI: 10.1002/2016WR020175
Publisher: American Geophysical Union (AGU)
Date: 12-2005
DOI: 10.1029/2004WR003835
Publisher: American Geophysical Union (AGU)
Date: 12-2008
DOI: 10.1029/2008WR007323
Publisher: Wiley
Date: 04-07-2022
Publisher: American Geophysical Union (AGU)
Date: 09-2015
DOI: 10.1002/2014WR016650
Publisher: American Geophysical Union (AGU)
Date: 06-2023
DOI: 10.1029/2022WR033153
Abstract: Increasing recognition of the importance of ecosystem services in water resources management has accelerated the development and application of environmental‐flows requirements for lotic ecosystems. However, most environmental‐flows management focuses on water infrastructure, such as dams or ersions, without explicitly taking groundwater into account and ignoring the importance of groundwater environmental flow contribution. In this study two methods for estimating groundwater environmental flow contributions are presented: (a) a groundwater‐centric method (based on the Sustainability Boundary Approach), which proposes that high levels of ecological protection are maintained if 90% of groundwater discharge is preserved, and (b) a surface water‐centric method (novel method), which quantifies groundwater environmental flow contributions from streamflow using region‐specific streamflow sensitivity metrics and local environmental‐flows policies. The two methods were tested in British Columbia, Canada, which has a erse, complex, and highly coupled groundwater‐surface water system. The two methods gave comparable results in various hydro‐geoclimatic settings. Although British Columbia was used as a case study, this framework can be implemented across various spatial and temporal scales for different regions and globally, in data‐scarce, hydrologically complex landscapes. Application of these methods can aid in a robust and holistic assessment of environmental‐flows, taking into account the often‐missing groundwater component.
Publisher: American Geophysical Union (AGU)
Date: 2008
DOI: 10.1029/2006WR005804
Location: Canada
Location: United States of America
Location: United States of America
No related grants have been discovered for James Famiglietti.