Earth's surface water change over the past 30 years

Donchyts, Gennadii; Baart, Fedor; Winsemius, Hessel; Gorelick, Noel; Kwadijk, Jaap; Giesen, Nick van de

doi:10.1038/nclimate3111

Cited by 360 publications

(283 citation statements)

References 14 publications

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“…This effect can significantly increase the actual observation footprint and reduce the effective spatial resolution. The GLOWABO database [21], the G3WBM [17], the Deltares Aqua Monitor [22] and the product from [23] were not available at the time of this study.…”

Section: Potential Products To Build the CCI Global Map Of Open Watermentioning

confidence: 99%

“…The data product spans 90 • N and 60 • S and has a spatial resolution of 90 m. Pan-sharpened Landsat 7 (14.25 m spatial resolution) imagery circa 2000 was used to generate the Global Water Bodiesdatabase (GLOWABO), including all lakes larger than 0.002 km 2 [21]. More recently, [22] presented the Deltares Aqua Monitor and [23] the Landsat-based 30-year global surface water dynamics with a spatial resolution of 30 m.…”

Section: ! !mentioning

confidence: 99%

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Compilation and Validation of SAR and Optical Data Products for a Complete and Global Map of Inland/Ocean Water Tailored to the Climate Modeling Community

et al. 2017

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Accurate maps of surface water extent are of paramount importance for water management, satellite data processing and climate modeling. Several maps of water bodies based on remote sensing data have been released during the last decade. Nonetheless, none has a truly (90 • N/90 • S) global coverage while being thoroughly validated. This paper describes a global, spatially-complete (void-free) and accurate mask of inland/ocean water for the 2000-2012 period, built in the framework of the European Space Agency (ESA) Climate Change Initiative (CCI). This map results from the synergistic combination of multiple individual SAR and optical water body and auxiliary datasets. A key aspect of this work is the original and rigorous stratified random sampling designed for the quality assessment of binary classifications where one class is marginally distributed. Input and consolidated products were assessed qualitatively and quantitatively against a reference validation database of 2110 samples spread throughout the globe. Using all samples, overall accuracy was always very high among all products, between 98% and 100%. The CCI global map of open water bodies provided the best water class representation (F-score of 89%) compared to its constitutive inputs. When focusing on the challenging areas for water bodies' mapping, such as shorelines, lakes and river banks, all products yielded substantially lower accuracy figures with overall accuracies ranging between 74% and 89%. The inland water area of the CCI global map of open water bodies was estimated to be 3.17 million km 2 ± 0.24 million km 2 . The dataset is freely available through the ESA CCI Land Cover viewer.

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Section: Potential Products To Build the CCI Global Map Of Open Watermentioning

confidence: 99%

Section: ! !mentioning

confidence: 99%

Compilation and Validation of SAR and Optical Data Products for a Complete and Global Map of Inland/Ocean Water Tailored to the Climate Modeling Community

et al. 2017

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“…The rapid development of satellite based remote sensing technologies have led to the development of global monitoring tools facilitating the assessment of surface water resources worldwide such as the Deltares Aqua Monitor [49] and the Global Surface Water Explorer [58]. These tools utilize more than 30 years of Landsat satellite imagery archives and provide access to data illustrating the extent of change in surface water cover worldwide.…”

Section: Key Factors Affecting Water Resources In Ca Endorheic Basinsmentioning

confidence: 99%

“…We should note an ecological stabilization of the Small Aral Sea (the northern part), which is separated from the Large Aral Sea by a dike, installed in 2003 by the Kazakhstani government [47][48][49]. The restoration of the Small Aral Sea has led to a rise in water levels and a lower salinity, which has permitted the return of fisheries [47].…”

Section: Central Asiamentioning

confidence: 99%

Essentials of Endorheic Basins and Lakes: A Review in the Context of Current and Future Water Resource Management and Mitigation Activities in Central Asia

Yapiyev

Sagin

Inglezakis

et al. 2017

Water

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Abstract:Endorheic basins (i.e., land-locked drainage networks) and their lakes can be highly sensitive to variations in climate and adverse anthropogenic activities, such as overexploitation of water resources. In this review paper, we provide a brief overview of one major endorheic basin on each continent, plus a number of endorheic basins in Central Asia (CA), a region where a large proportion of the land area is within this type of basin. We summarize the effects of (changing) climate drivers and land surface-atmosphere feedbacks on the water balance. For the CA region, we also discuss key anthropogenic activities, related water management approaches and their complex relationship with political and policy issues. In CA a substantial increase in irrigated agriculture coupled with negative climate change impacts have disrupted the fragile water balance for many endorheic basins and their lakes. Transboundary integrated land and water management approaches must be developed to facilitate adequate climate change adaptation and possible mitigation of the adverse anthropogenic influence on endorheic basins in CA. Suitable climate adaptation, mitigation and efficient natural resource management technologies and methods are available, and are developing fast. A number of these are discussed in the paper, but these technologies alone are not sufficient to address pressing water resource issues in CA. Food-water-energy nexus analyses demonstrate that transboundary endorheic basin management requires transformational changes with involvement of all key stakeholders. Regional programs, supported by local governments and international donors, which incorporate advanced adaptation technologies, water resource research and management capacity development, are essential for successful climate change adaptation efforts in CA. However, there is a need for an accelerated uptake of such programs, with an emphasis on unification of approaches, as the pressures resulting from climate change and aggravated by human mismanagement of natural water resources leave very little time for hesitation.

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“…Satellite-based monitoring of human settlements and population density [40] can provide critical information about where people are likely to demand improved water quality. Availability of surface-water sources within a defined radius can be assessed from Earth observation data (e.g., [63]) and might indicate use of surface vs. groundwater resources. However, rigorous assessment requires information such as water sources, intake locations, water quality standards and regulations as well as treatment technology, which cannot be obtained from satellites.…”

mentioning

confidence: 99%

Priorities to Advance Monitoring of Ecosystem Services Using Earth Observation

Cord

Brauman

Chaplin‐Kramer

et al. 2017

Trends in Ecology & Evolution

118

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Abstract:Managing ecosystem services in the context of global sustainability policies requires reliable monitoring mechanisms. While satellite Earth observation offers great promise to support this need, significant challenges remain in quantifying connections between ecosystem functions, ecosystem services and human well-being benefits. Here, we provide a framework showing how 30Earth observation together with socio-economic information and model-based analysis can support assessments of ecosystem service supply, demand and benefit, and illustrate this for three services. We argue that the full potential of Earth observation is not yet realized in ecosystem service studies. To provide guidance for priority setting and to spur research in this area, we propose five priorities to advance the capabilities of Earth observation-based monitoring of 35 ecosystem services in the future. Main TextThe importance of monitoring ecosystem services Human population growth, changing lifestyles and growing demands for natural resources (e.g., 40food, clean water, fertile soils and timber) put the world's ecosystems under increasing pressure[1], often with unfavorable impacts on their capacity to provide ecosystem services -the benefits people obtain from nature (see Glossary). By emphasizing this critical role of nature in securing human well-being [2], the ecosystem service framework integrates the various components of socio-ecological systems and can be used to develop sustainable strategies [3]. However, 45operationalizing and predicting the relationships between biodiversity, ecosystem functions, ecosystem services and human well-being (e.g., [4,5]) to aid in decision-making is difficult and 3 requires detailed understanding of specific ecosystems as well as generalizations born of comparisons among similar systems [6].Monitoring the global status and trends of ecosystem services is crucial for policy and 50 management. Such reporting is mandated by a suite of recent multilateral political agreements and (inter)national assessments that have adopted the ecosystem service framework, e.g., the Intergovernmental Platform on Biodiversity & Ecosystem Services -IPBES [2], the Aichi Biodiversity Targets [7], the EU Biodiversity Strategy [8], and the recent US memorandum directing federal agencies to factor ecosystem services into planning and decision-making [9]. 55Monitoring trends will also be critical to evaluate the extent to which ecosystem services can help countries meet the new standards set by the recently adopted United Nations Sustainable Development Goals (SDGs; [10]) -which more fully integrate the three pillars of sustainable development (social, economic, and environmental). However, we currently lack indicators and monitoring approaches for ecosystem services and their change that can be compared worldwide numerical simulation models [13]. For example, the question 'How can remote sensing-derived products be used to value and monitor changes in ecosystem services?' was included in a list of the 10 major ways that...

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Earth's surface water change over the past 30 years

Cited by 360 publications

References 14 publications

Compilation and Validation of SAR and Optical Data Products for a Complete and Global Map of Inland/Ocean Water Tailored to the Climate Modeling Community

Compilation and Validation of SAR and Optical Data Products for a Complete and Global Map of Inland/Ocean Water Tailored to the Climate Modeling Community

Essentials of Endorheic Basins and Lakes: A Review in the Context of Current and Future Water Resource Management and Mitigation Activities in Central Asia

Priorities to Advance Monitoring of Ecosystem Services Using Earth Observation

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