{"id":4162,"date":"2022-08-01T05:14:05","date_gmt":"2022-08-01T05:14:05","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=4162"},"modified":"2022-08-01T05:14:05","modified_gmt":"2022-08-01T05:14:05","slug":"climate-change-milestone-co2-levels-nearing-400-ppm","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/ro\/science\/climate-science\/climate-change-milestone-co2-levels-nearing-400-ppm\/","title":{"rendered":"400 ppm: Am atins o nou\u0103 etap\u0103 \u00een schimb\u0103rile climatice"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Piatra de hotar a schimb\u0103rilor climatice: nivelurile de CO2 se apropie de 400 ppm<\/h2>\n\n<h2 class=\"wp-block-heading\">Cre\u0219terea nivelului de dioxid de carbon<\/h2>\n\n<p>Pentru prima dat\u0103 \u00een istoria omenirii, nivelurile atmosferice mondiale de dioxid de carbon (CO2) vor dep\u0103\u0219i 400 de p\u0103r\u021bi per milion (ppm) \u00een cursul acestei luni. Aceast\u0103 etap\u0103 este un memento clar al cre\u0219terii continue a nivelurilor de CO2 \u0219i a nevoii urgente de a aborda schimb\u0103rile climatice.<\/p>\n\n<p>Oamenii de \u0219tiin\u021b\u0103 au monitorizat concentra\u021biile de CO2 dintr-o sta\u021bie din Hawaii, unde nivelurile ating de obicei v\u00e2rful \u00een luna mai. \u00cen prezent, nivelurile se situeaz\u0103 \u00een jurul valorii de 399 ppm, iar cercet\u0103torii preconizeaz\u0103 c\u0103 acestea vor dep\u0103\u0219i 400 ppm \u00een aceast\u0103 lun\u0103 sau cel t\u00e2rziu anul viitor.<\/p>\n\n<h2 class=\"wp-block-heading\">Context istoric<\/h2>\n\n<p>\u00cen martie 1958, c\u00e2nd au fost efectuate primele m\u0103sur\u0103tori ale CO2 atmosferic, emisfera nordic\u0103 se situa la 316 ppm. Cercet\u0103torii estimeaz\u0103 c\u0103 nivelurile preindustriale erau \u00een jur de 280 ppm. Timp de 800.000 de ani \u00eenainte de revolu\u021bia industrial\u0103, nivelurile de CO2 nu au dep\u0103\u0219it niciodat\u0103 300 ppm.<\/p>\n\n<p>Cu toate acestea, de la \u00eenceputul industrializ\u0103rii, nivelurile de CO2 au crescut constant. \u00cen ritmul actual, este posibil s\u0103 ajungem la 450 ppm \u00een urm\u0103toarele c\u00e2teva decenii.<\/p>\n\n<h2 class=\"wp-block-heading\">Semnifica\u021bia etapei de 400 ppm<\/h2>\n\n<p>De\u0219i etapa de 400 ppm este \u00eentr-o oarecare m\u0103sur\u0103 arbitrar\u0103, oamenii de \u0219tiin\u021b\u0103 subliniaz\u0103 importan\u021ba sa ca un semnal de alarm\u0103 cu privire la cre\u0219terea continu\u0103 a nivelurilor de CO2. Indiferent dac\u0103 ne afl\u0103m la 390 sau 400 ppm, faptul r\u0103m\u00e2ne c\u0103 CO2 atmosferic cre\u0219te \u0219i se preconizeaz\u0103 c\u0103 va continua s\u0103 creasc\u0103.<\/p>\n\n<h2 class=\"wp-block-heading\">R\u0103spunsul politic \u0219i public<\/h2>\n\n<p>Unii cercet\u0103tori \u0219i sus\u021bin\u0103tori sper\u0103 c\u0103 trecerea pragului de 400 ppm va mobiliza politicienii \u0219i publicul la ac\u021biune. Schimb\u0103rile climatice nu sunt doar o problem\u0103 \u0219tiin\u021bific\u0103, ci \u0219i una politic\u0103.<\/p>\n\n<p>\u201eS\u0103 sper\u0103m c\u0103 atingerea nivelului de 400 ppm poate servi drept o sc\u00e2nteie pentru a aprinde un nou sentiment de urgen\u021b\u0103 cu privire la schimb\u0103rile climatice\u201d, scrie Responding to Climate Change. \u201eAltfel, \u00een c\u00e2teva decenii, ne vom lamenta inac\u021biunea c\u00e2nd vom atinge 450 ppm.\u201d<\/p>\n\n<p>Cu toate acestea, nu exist\u0103 nicio garan\u021bie c\u0103 aceast\u0103 etap\u0103 va avea un impact semnificativ asupra politicilor, atitudinilor sau ac\u021biunilor.<\/p>\n\n<h2 class=\"wp-block-heading\">Provoc\u0103ri \u0219i preocup\u0103ri<\/h2>\n\n<p>Una dintre principalele provoc\u0103ri este c\u0103 sta\u021bia din Hawaii care monitorizeaz\u0103 nivelurile de CO2 risc\u0103 s\u0103 fie \u00eenchis\u0103 din cauza reducerilor bugetare. Oamenii de \u0219tiin\u021b\u0103 se tem c\u0103 acest lucru va \u00eempiedica capacitatea noastr\u0103 de a urm\u0103ri nivelurile de CO2 \u0219i de a monitoriza evolu\u021bia schimb\u0103rilor climatice.<\/p>\n\n<p>\u201eEste cam proste\u0219te c\u0103 am ales s\u0103 ne comport\u0103m precum stru\u021bul\u201d, a declarat biogeochimistul Jim White pentru Nature. \u201eNu vrem s\u0103 \u0219tim c\u00e2t CO2 se afl\u0103 \u00een atmosfer\u0103, c\u00e2nd ar trebui s\u0103 monitoriz\u0103m \u0219i mai mult.\u201d<\/p>\n\n<h2 class=\"wp-block-heading\">Impact pe termen lung<\/h2>\n\n<p>Cre\u0219terea nivelurilor atmosferice de CO2 are numeroase impacturi pe termen lung asupra planetei noastre \u0219i a locuitorilor s\u0103i:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00cenc\u0103lzire global\u0103:<\/strong> CO2 ac\u021bioneaz\u0103 ca un gaz cu efect de ser\u0103, care re\u021bine c\u0103ldura \u00een atmosfer\u0103 \u0219i duce la \u00eenc\u0103lzirea global\u0103.<\/li>\n<li><strong>Acidifierea oceanelor:<\/strong> CO2 se dizolv\u0103 \u00een apa de mare, form\u00e2nd acid carbonic, care poate d\u0103una vie\u021bii marine.<\/li>\n<li><strong>Evenimente meteorologice extreme:<\/strong> Nivelurile crescute de CO2 sunt legate de o cre\u0219tere a frecven\u021bei \u0219i intensit\u0103\u021bii evenimentelor meteorologice extreme, cum ar fi uraganele, valurile de c\u0103ldur\u0103 \u0219i secetele.<\/li>\n<li><strong>Impact asupra s\u0103n\u0103t\u0103\u021bii:<\/strong> Nivelurile ridicate de CO2 pot contribui la probleme respiratorii \u0219i cardiovasculare.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Apel la ac\u021biune<\/h2>\n\n<p>Etapa de 400 ppm este un memento c\u0103 nu ne putem permite s\u0103 fim mul\u021bumi\u021bi de schimb\u0103rile climatice. Este crucial s\u0103 lu\u0103m m\u0103suri acum pentru a reduce emisiile \u0219i a atenua impactul acestora.<\/p>\n\n<p>Acest lucru include:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Trecerea la surse de energie regenerabil\u0103<\/li>\n<li>\u00cembun\u0103t\u0103\u021birea eficien\u021bei energetice<\/li>\n<li>Protejarea p\u0103durilor \u0219i a altor pu\u021buri de carbon<\/li>\n<li>Investi\u021bii \u00een cercetare \u0219i dezvoltare de solu\u021bii climatice<\/li>\n<li>Sus\u021binerea politicilor climatice la toate nivelurile guvernamentale<\/li>\n<\/ul>\n\n<p>Lucr\u00e2nd \u00eempreun\u0103, putem aborda schimb\u0103rile climatice \u0219i crea un viitor durabil pentru planeta noastr\u0103.<\/p>","protected":false},"excerpt":{"rendered":"<p>Piatra de hotar a schimb\u0103rilor climatice: nivelurile de CO2 se apropie de 400 ppm Cre\u0219terea nivelului de dioxid de carbon Pentru prima dat\u0103 \u00een istoria omenirii, nivelurile atmosferice mondiale de&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[284],"tags":[7651,569,7650,34,36],"class_list":["post-4162","post","type-post","status-publish","format-standard","hentry","category-climate-science","tag-climate-crisis","tag-global-warming","tag-co2-levels","tag-climate-change","tag-environmental-science"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/4162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/comments?post=4162"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/4162\/revisions"}],"predecessor-version":[{"id":4163,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/4162\/revisions\/4163"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/media?parent=4162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/categories?post=4162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/tags?post=4162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}