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The anthropogenic salt cycle | Nature Reviews Earth & Environment

Increasing salt production and use is shifting the natural balances of salt ions across Earth systems, causing interrelated effects across biophysical systems collectively known as freshwater salinization syndrome. In this Review, we conceptualize the natural salt cycle and synthesize increasing global trends of salt production and riverine salt concentrations and fluxes. The natural salt cycle is primarily driven by relatively slow geologic and hydrologic processes that bring different salts to the surface of the Earth. Anthropogenic activities have accelerated the processes, timescales and magnitudes of salt fluxes and altered their directionality, creating an anthropogenic salt cycle. Global salt production has increased rapidly over the past century for different salts, with approximately 300 Mt of NaCl produced per year. A salt budget for the USA suggests that salt fluxes in rivers can be within similar orders of magnitude as anthropogenic salt fluxes, and there can ....

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Sub-Saharan Africa will increasingly become the dominant hotspot of surface water pollution

Human activities greatly impact surface water quality, while being reliant upon it for water supply. Surface water quality is expected to change in the future as a result of alterations to pollutant loadings, surface water withdrawals and hydrological regimes, driven by both climate change and socio-economic developments. Here we use a high-resolution global surface water quality model to project water temperature and indicators of salinity (total dissolved solids), organic (biological oxygen demand) and pathogen (fecal coliform) pollution until 2100. The results show that while surface water quality, as indicated by these pollutants, will improve in most advanced economies, the outlook for poorer nations is bleak. The proportion of the global population exposed to salinity, organic and pathogen pollution by the end of the century ranges from 17 to 27%, 20 to 37% and 22 to 44%, respectively, with poor surface water quality disproportionately affecting people living in developing countr ....

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GEMS Ocean programme officially endorsed by the UN Ocean Decade

In response to the second Call for Decade Actions, the Global Environment Monitoring System for the Ocean and Coasts (GEMS Ocean) Programme was officially endorsed in September 2022 by the UN Ocean Decade of Ocean Science for Sustainable Development (2021-2030). ....

Joana Akrofi , Intergovernmental Oceanographic Commission , World Resources Institute , Eoceans Initiative , World Conservation Monitoring Centre , Ocean Programme , Un Ocean Decade Collaborative Center , International Ocean Institute , Community Of Practice , Mercator Ocean International , Copernicus Marine Service , Decade Actions , Global Environment Monitoring System , Ocean Science , Sustainable Development , Marine Spatial Planning , Ocean Forecasting , Sustainable Blue Economy , Regional Seas , Member States , Environment Situation Room , Decade Collaborative Center , Global Ocean Observing System , Resource Information Database , Future Earth , Conservation Monitoring Centre ,

OGC Calling For Participation in its Water Quality Interoperability Experiment

Come advance the development of the WaterML 2.0 suite of standards in the area of water quality data, and help increase the effectiveness of related global development activities. Contact: info@ogc.org 20 July 2022: The Open Geospatial Consortium (OGC) has released a Call for Participation (CFP) to solicit proposals for the OGC Water Quality Interoperability Experiment (WQ ....

United States , Aplicaciones Forestales , World Meteorological Organization , United States Geological Survey , Lincoln Institute Of Land Policy , United Nations Environmental Programme , Geospatial Consortium , United States Environmental Protection Agency , University Of Tartu , Federation University Australia , Bureau De Recherches , Geospatial Solutions , Water Data Centre , Hydrology Domain Working Group , Call For Participation , Quality Interoperability , Open Geospatial Consortium , Quality Interoperability Experiment , Domain Working Group , Water Quality Data , Water Quality , Engineering Report , Centro De Investigaci , Lincoln Institute , Land Policy , Global Environment Monitoring System ,

How digital technology and innovation can help protect the planet

UNEP and its partners have embraced a range of digital technologies to accelerate climate action, nature protection and pollution prevention. ....

New Delhi , Igor Kamelev , Anindito Mukherjee , Manfredi Caltagirone , David Jensen , Sustainable Development Goal , Un Biodiversity Lab , United Nations Biodiversity Lab , United Nations Environment Programme , Convention On Biological Diversity , World Conservation Monitoring Centre , Gas Methane Partnership , United Nations , Clean Air Coalition , Sustainable Development Goals , European Commission Joint Research Centre , International Methane Emissions Observatory , Coalition For Digital Environmental Sustainability , Convention On Biodiversity Secretariat , Global Environment Monitoring System , India Gate , United Nations Secretary General Ant , Digital Transformation , Digital Environmental Sustainability , Digital Cooperation , Freshwater Ecosystem ,