{"id":33265,"date":"2018-03-15T14:42:31","date_gmt":"2018-03-15T13:42:31","guid":{"rendered":"https:\/\/ocasapiens-dweb.blogautore.repubblica.it\/?p=33265"},"modified":"2022-02-12T21:11:59","modified_gmt":"2022-02-12T20:11:59","slug":"geoingegneria-il-modello-cinese","status":"publish","type":"post","link":"https:\/\/archivio.ocasapiens.org\/index.php\/2018\/03\/15\/geoingegneria-il-modello-cinese\/","title":{"rendered":"Geoingegneria: il modello cinese"},"content":{"rendered":"<p>In un commento su <em>Nature<\/em>\u00a0<span style=\"color: #0000ff;\"><a href=\"http:\/\/kaares.ulapland.fi\/home\/hkunta\/jmoore\/johnpage.htm\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">John Moore<\/span><\/a> <\/span>dell&#8217;universit\u00e0 della Lapponia e della Normale di Pechino, e tre colleghi invocano una geoingegneria dei ghiacciai groenlandesi e antartici, per frenare l&#8217;innalzamento del livello del mare dovuto alla loro fusione. Sarebbe conveniente, secondo loro:<\/p>\n<p style=\"padding-left: 30px;\">Without coastal protection, the global cost of damages could reach US$50 trillion a year. Sea walls and flood defences cost tens of billions of dollars a year to construct and maintain.<\/p>\n<p style=\"padding-left: 30px;\">At this price, geoengineering is competitive. For example, building an artificial island to host Hong Kong\u2019s international airport, which added 1% to the city\u2019s land area, cost more than $20 billion. China\u2019s Three Gorges Dam, which spans the Yangtze River to control floods and generate power, is thought to have cost about $33 billion.<\/p>\n<p>Se ne parla poco nelle riviste scientifiche, lamentano.<\/p>\n<p style=\"padding-left: 30px;\">We understand the hesitancy to interfere with glaciers \u2014 as glaciologists, we know the pristine beauty of these places. But we have also stood on ice shelves that are now open ocean. If the world does nothing, ice sheets will keep shrinking and the losses will accelerate. Even if greenhouse-gas emissions are slashed, which looks unlikely, it would take decades for the climate to stabilize.<\/p>\n<p>Mi sembrano porsi le domande sbagliate:<\/p>\n<p style=\"padding-left: 30px;\">Is allowing a \u2018pristine\u2019 glacier to waste away worth forcing one million people from their homes? Ten million? One hundred million? Should we spend vast sums to wall off all the world\u2019s coasts, or can we address the problem at its source?<\/p>\n<p>La fonte sono emissioni di gas serra, scrivono nelle ultime righe. Propongono lo stesso opere\u00a0di ingegneria discutibili,\u00a0 o impossibili con le tecniche attuali:<\/p>\n<ul>\n<li>costruire un muro alto cento metri e lungo 5 km per bloccare il deflusso dell&#8217;acqua dal ghiacciaio Jakobshavn<\/li>\n<li>costruire isole e argini davanti a quelli dell&#8217;Antartide occidentale<\/li>\n<li>drenare il flusso d&#8217;acqua subglaciale che fa da &#8220;lubrificante&#8221; e accelera la discesa in mare dei ghiacciai<\/li>\n<\/ul>\n<p>Alla fine ammettono che prima di pensarci, servono pi\u00f9 ricerche, modelli, analisi<\/p>\n<p style=\"padding-left: 30px;\">Potential risks, especially to local ecosystems, need careful analysis. In our view, however, the greatest risk is doing nothing \u2014 or if the interventions don\u2019t work.<\/p>\n<p>Servir\u00e0 anche un accordo internazionale, in particolare per l&#8217;Antartide, nel frattempo<\/p>\n<p style=\"padding-left: 30px;\">researchers in China are preparing a $3-billion plan for polar research in the next decade that includes addressing the feasibility of targeted geoengineering schemes such as ours.<\/p>\n<p>Gi\u00e0, <a href=\"https:\/\/en.wikipedia.org\/wiki\/Yu_the_Great\" target=\"_blank\" rel=\"noopener\">Yu il Grande<\/a> controllava le acque e per Marvin Harris, in<em> Cannibali e Re<\/em>, la Cina era l&#8217;impero dell&#8217;ingegneria idraulica.<\/p>\n<p style=\"text-align: center;\">*<\/p>\n<p>Anche Davide Castelvecchi scrive il <a href=\"https:\/\/www.nature.com\/articles\/d41586-018-02957-4\" target=\"_blank\" rel=\"noopener\">necrologio<\/a> di <a href=\"https:\/\/www.nature.com\/collections\/nnpcmxxzhv\" target=\"_blank\" rel=\"noopener\">Stephen Hawking,<\/a> anche se tecnicamente \u00e8 affidato a <a href=\"https:\/\/www.nature.com\/articles\/d41586-018-02957-4\" target=\"_blank\" rel=\"noopener\">Martin Rees<\/a>.<\/p>\n<p style=\"text-align: center;\">***<\/p>\n<p style=\"text-align: left;\"><a href=\"https:\/\/orbmedia.org\/stories\/plus-plastic\" target=\"_blank\" rel=\"noopener\">Orbmedia<\/a> ha commissionato al lab di <span style=\"color: #0000ff;\"><a href=\"http:\/\/home.fredonia.edu\/earth\/faculty-mason\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">Sherri Mason<\/span><\/a><\/span>, all&#8217;universit\u00e0 statale di New York- Fredonia,<span style=\"color: #0000ff;\"> <a href=\"https:\/\/orbmedia.org\/stories\/plus-plastic\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">un&#8217;analisi <\/span><\/a><\/span>\u00a0della plastica nelle acque minerali pi\u00f9 vendute dove se ne consuma di pi\u00f9: Brasile, Cina, Kenya, India, Indonesia, Libano, Messico, Stati Uniti e Thailandia.<\/p>\n<p style=\"text-align: left; padding-left: 30px;\">Tested 259 individual bottles from 27 different lots across 11 brands, purchased from 19 locations in 9 countries<\/p>\n<p style=\"text-align: left; padding-left: 30px;\">93% of bottled water showed some sign of microplastic contamination after accounting for possible background (lab) contamination<\/p>\n<p style=\"padding-left: 30px;\">Data suggests contamination is at least partially coming from the packaging and\/or the bottling process itself<\/p>\n<p>Ci sono in media 10,4 microfibre di plastica a litro (MPP\/L) e 325 contando quelle &#8220;probabili&#8221; da confermare con un secondo sistema di analisi\u00a0, al 54% sono polipropilene. C&#8217;\u00e8 una grande differenza tra le marche e anche tra le bottiglie di una stessa marca.<\/p>\n<p style=\"padding-left: 30px;\">Averaging across lots by brand, <strong>Nestle Pure Life<\/strong> and Gerolsteiner showed the highest average densities at 930 and 807 MPP\/L, respectively, while <strong>San Pellegrino<\/strong> and Minalba showed the lowest microplastic contamination with 30.0 and 63.1 MPP\/L, respectively.<\/p>\n<p>La <span style=\"color: #0000ff;\"><a href=\"http:\/\/www.bbc.com\/news\/science-environment-43388870\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">BBC <\/span><\/a><\/span>\u00a0ha chiesto una peer-review del rapporto. Idem\u00a0<em><a href=\"https:\/\/www.theguardian.com\/environment\/2018\/mar\/15\/microplastics-found-in-more-than-90-of-bottled-water-study-says\" target=\"_blank\" rel=\"noopener\">The Guardian<\/a><\/em>\u00a0che cita<em>\u00a0<\/em>la ricerca commissionata da Story of Stuff, una Ong non giornalistica, e un portavoce dell&#8217;OMS<\/p>\n<p style=\"padding-left: 30px;\">The spokesman said the WHO would \u201creview the very scarce available evidence with the objective of identifying evidence gaps, and establishing a research agenda to inform a more thorough risk assessment.\u201d<\/p>\n<p>Le case produttrici criticano il metodo di analisi, \u00e7a va sans dire. Pubblicare i dati ottenuti con un metodo secondo loro pi\u00f9 perfezionato, no?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In un commento su Nature\u00a0John Moore dell&#8217;universit\u00e0 della Lapponia e della Normale di Pechino, e tre colleghi invocano una geoingegneria dei ghiacciai groenlandesi e antartici, per frenare l&#8217;innalzamento del livello del mare dovuto alla loro fusione. Sarebbe conveniente, secondo loro: Without coastal protection, the global cost of damages could reach US$50 trillion a year. Sea&hellip; <a class=\"more-link\" href=\"https:\/\/archivio.ocasapiens.org\/index.php\/2018\/03\/15\/geoingegneria-il-modello-cinese\/\">Continua a leggere <span class=\"screen-reader-text\">Geoingegneria: il modello cinese<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,30],"tags":[481,2967,2995,3199,4498,4725,6554],"class_list":["post-33265","post","type-post","status-publish","format-standard","hentry","category-clima","category-tecno","tag-antartide","tag-geoingegneria","tag-ghiacciai","tag-groenlandia","tag-microplastica","tag-nature","tag-stephen-hawking","entry"],"_links":{"self":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts\/33265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/comments?post=33265"}],"version-history":[{"count":2,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts\/33265\/revisions"}],"predecessor-version":[{"id":45398,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts\/33265\/revisions\/45398"}],"wp:attachment":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/media?parent=33265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/categories?post=33265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/tags?post=33265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}