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The article evaluates solar-driven atmospheric water harvesting (AWH) devices with continuous cycling, addressing concerns about low specific yields and limited daytime humidity. Using Google Earth Engine, it models a hypothetical 1 m² device and shows it could supply safely managed drinking water to around one billion people under favorable humidity and performance ranges, with impacts supported by existing experimental demonstrations and thermodynamic considerations.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/global-potential-for-harvesting-drinking-water-from-air-using-solar-energy-article/308808/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/global-potential-for-harvesting-drinking-water-from-air-using-solar-energy-article/308808.png","ImageObject",300,407,{"name":92,"@type":93},"Logic","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-09-20",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why is atmospheric water harvesting being studied for drinking water access?","Question",{"text":112,"@type":113},"Because safely managed drinking water is a global shortfall. Solar-driven AWH could enable decentralized water extraction from air, potentially accelerating progress in underserved regions.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What method and device assumptions does the assessment use?",{"text":117,"@type":113},"The article uses Google Earth Engine and introduces a hypothetical 1-metre-square device with a specific yield profile tied to relative humidity (and a stated equivalence for a 2-metre-square device).",{"name":119,"@type":110,"acceptedAnswer":120},"What determines whether AWH can meet daily drinking water needs?",{"text":121,"@type":113},"Performance depends on specific yield and the availability of appropriate relative humidity and solar-driven operating conditions. The modeled targets align with experimentally achieved performance in demonstrations of sorbent materials.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},308808,1790302939,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":46,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":31,"preview_page_count":4},1099513958762,"https://ap-avatar.wpscdn.com/avatar/1000023916a998db790?x-image-process=image/resize,m_fixed,w_180,h_180&k=1784791008015729253","Article  \n\n| Global potential for harvesting drinking water from air using solar energy |  |  |\n| --- | --- | --- |\n| [https://doi.org/10.1038/s41586-021-03900-w](https://doi.org/10.1038/s41586-021-03900-w)\u003Cbr>Received: 5 February 2021 Accepted: 11 August 2021 Published online: 27 October 2021 Open access\u003Cbr> Check for updates | Jackson Lord1 ✉, Ashley Thomas1, Neil Treat1, Matthew Forkin1, Robert Bain2, Pierre Dulac3, Cyrus H. Behroozi1, Tilek Mamutov1, Jillia Fongheiser1, Nicole Kobilansky1, Shane Washburn1, Claudia Truesdell1, Clare Lee1 & Philipp H. Schmaelzle1 ✉\u003Cbr>Access to safely managed drinking water (SMDW) remains a global challenge, and affects 2.2 billion people1,2. Solar-driven atmospheric water harvesting (AWH) devices with continuous cycling may accelerate progress by enabling decentralized extraction of water from air3–6, but low specific yields (SY) and low daytime relative humidity (RH) have raised questions about their performance (in litres of water output per day)7–11. However, to our knowledge, no analysis has mapped the global potentialofAWH12 despite favourable conditions in tropical regions, where two-thirds of people without SMDW live2. Here weshowthatAWH could provideSMDW fora billion people. Our assessment—using Google Earth Engine13—introducesa hypothetical 1-metre-square device with aSY profile of 0.2 to 2.5 litres per kilowatthour (0.1 to 1.25 litres per kilowatt-hour fora 2-metre-square device) at 30% to 90% RH, respectively. Such a device could meet a target average daily drinking water requirement of 5 litres per day per person14. We plot the impact potential of existing devices and newsorbent classes, which suggests that these targets could be met with continued technological development, and well within thermodynamic limits. Indeed, these performance targets have been achieved experimentally in demonstrations ofsorbent materials15–17. Our tools can inform design trade-offs for atmospheric water harvesting devices that maximize global impact, alongside ongoing efforts to meet Sustainable Development Goals (SDGs) with existing technologies. |  |\n| Ensuring reliable access to safe drinking water for all remains a global |  | allow for pre-condensed dew or fog to be harvested. Passive devices |\n| challenge, and is formally recognized asan international development |  | are thus limited to geographic niches where dew or fog can be system- |\n| priority by 2030 in the United Nations framework for global develop- |  | atically harvested7,12,24. Active, sorbent-based AWH devices extract |\n| ment priorities, the Sustainable Development Goals 6.118. Progress |  | water using primarily solar thermal energy in one of two operational |\n| towards this target is measured by the WHO/UNICEF Joint Monitoring |  | modes: diurnal-mode devices extract at night (when RHis higher) and |\n| Programme ( JMP) asthe percentage of population using safely man- |  | condense during the day (when solar energy is available) ina single daily |\n| aged drinking water (SMDW), where ‘safely managed’is defined as “an |  | cycle, requiring a large sorbent bed. By contrast, continuous-mode |\n| improved source located on the premises, available when needed and |  | devices are not limited toa single daily cycle, and need only hold a small |\n| free of fecal and priority chemical contamination”1,2. Traditional routes |  | amount of water vapour in-process3,4, drastically reducing sorbent |\n| to bringSMDW on premises to currently unserved populations are |  | mass and device size. This, however, requires extraction at lower RH |\n| estimated to cost US$114 billion per year (from 2015), more than three |  | when solar energy is available, raising questions about performance7–11. |\n| times the historical financing trend19. Moreover, there is increasing |  | Cooler–condenser devices use work (typically electric energy) to |\n| global interest in solutions that provide safe drinking water without the |  | actively cool air below its dew point","cbCaikTf3ILUFMT7","https://ap.wps.com/l/cbCaikTf3ILUFMT7","pdf",21264226,"English","# Global need and motivation\n## What makes solar-driven AWH promising\n# Device modelling and hypothetical performance\n## Specific yield vs relative humidity\n# Application suitability and performance interpretation\n## Comparison across device categories\n# Implications for design and sustainable goals\n## Informing trade-offs for SDG progress","[{\"question\":\"Why is atmospheric water harvesting being studied for drinking water access?\",\"answer\":\"Because safely managed drinking water is a global shortfall. Solar-driven AWH could enable decentralized water extraction from air, potentially accelerating progress in underserved regions.\"},{\"question\":\"What method and device assumptions does the assessment use?\",\"answer\":\"The article uses Google Earth Engine and introduces a hypothetical 1-metre-square device with a specific yield profile tied to relative humidity (and a stated equivalence for a 2-metre-square device).\"},{\"question\":\"What determines whether AWH can meet daily drinking water needs?\",\"answer\":\"Performance depends on specific yield and the availability of appropriate relative humidity and solar-driven operating conditions. The modeled targets align with experimentally achieved performance in demonstrations of sorbent materials.\"}]","Global potential for harvesting drinking water from air using solar energy - Article | PDF",1789872452]