{"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\/vi\/science\/climate-science\/climate-change-milestone-co2-levels-nearing-400-ppm\/","title":{"rendered":"M\u1ed1c quan tr\u1ecdng v\u1ec1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu: M\u1ee9c CO2 ti\u1ebfn g\u1ea7n \u0111\u1ebfn 400 ppm"},"content":{"rendered":"<h2 class=\"wp-block-heading\">M\u1ed1c quan tr\u1ecdng v\u1ec1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu: N\u1ed3ng \u0111\u1ed9 CO2 g\u1ea7n 400 ppm<\/h2>\n\n<h2 class=\"wp-block-heading\">N\u1ed3ng \u0111\u1ed9 carbon dioxide gia t\u0103ng<\/h2>\n\n<p>L\u1ea7n \u0111\u1ea7u ti\u00ean trong l\u1ecbch s\u1eed lo\u00e0i ng\u01b0\u1eddi, n\u1ed3ng \u0111\u1ed9 carbon dioxide (CO2) trong kh\u00ed quy\u1ec3n to\u00e0n c\u1ea7u \u0111\u01b0\u1ee3c d\u1ef1 \u0111o\u00e1n s\u1ebd v\u01b0\u1ee3t qu\u00e1 400 ph\u1ea7n tri\u1ec7u (ppm) v\u00e0o cu\u1ed1i th\u00e1ng n\u00e0y. M\u1ed1c quan tr\u1ecdng n\u00e0y l\u00e0 l\u1eddi nh\u1eafc nh\u1edf nghi\u00eam tr\u1ecdng v\u1ec1 t\u00ecnh tr\u1ea1ng n\u1ed3ng \u0111\u1ed9 CO2 li\u00ean t\u1ee5c gia t\u0103ng v\u00e0 nhu c\u1ea7u c\u1ea5p thi\u1ebft ph\u1ea3i gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu.<\/p>\n\n<p>C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 theo d\u00f5i n\u1ed3ng \u0111\u1ed9 CO2 t\u1eeb m\u1ed9t tr\u1ea1m \u1edf Hawaii, n\u01a1i n\u1ed3ng \u0111\u1ed9 th\u01b0\u1eddng \u0111\u1ea1t \u0111\u1ec9nh v\u00e0o th\u00e1ng 5. Hi\u1ec7n t\u1ea1i, n\u1ed3ng \u0111\u1ed9 \u0111ang dao \u0111\u1ed9ng \u1edf m\u1ee9c 399 ppm v\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u d\u1ef1 \u0111o\u00e1n r\u1eb1ng n\u1ed3ng \u0111\u1ed9 s\u1ebd v\u01b0\u1ee3t qu\u00e1 400 ppm trong th\u00e1ng n\u00e0y ho\u1eb7c ch\u1eadm nh\u1ea5t l\u00e0 n\u0103m t\u1edbi.<\/p>\n\n<h2 class=\"wp-block-heading\">B\u1ed1i c\u1ea3nh l\u1ecbch s\u1eed<\/h2>\n\n<p>V\u00e0o th\u00e1ng 3 n\u0103m 1958, khi nh\u1eefng ph\u00e9p \u0111o \u0111\u1ea7u ti\u00ean v\u1ec1 CO2 trong kh\u00ed quy\u1ec3n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n, n\u1ed3ng \u0111\u1ed9 \u1edf b\u00e1n c\u1ea7u b\u1eafc l\u00e0 316 ppm. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u01b0\u1edbc t\u00ednh r\u1eb1ng n\u1ed3ng \u0111\u1ed9 tr\u01b0\u1edbc th\u1eddi k\u1ef3 c\u00f4ng nghi\u1ec7p v\u00e0o kho\u1ea3ng 280 ppm. Trong 800.000 n\u0103m tr\u01b0\u1edbc c\u00e1ch m\u1ea1ng c\u00f4ng nghi\u1ec7p, n\u1ed3ng \u0111\u1ed9 CO2 kh\u00f4ng bao gi\u1edd v\u01b0\u1ee3t qu\u00e1 300 ppm.<\/p>\n\n<p>Tuy nhi\u00ean, k\u1ec3 t\u1eeb khi b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh c\u00f4ng nghi\u1ec7p h\u00f3a, n\u1ed3ng \u0111\u1ed9 CO2 \u0111\u00e3 li\u00ean t\u1ee5c t\u0103ng l\u00ean. Theo t\u1ed1c \u0111\u1ed9 hi\u1ec7n t\u1ea1i, ch\u00fang ta c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ea1t \u0111\u1ebfn m\u1ee9c 450 ppm trong v\u00e0i th\u1eadp k\u1ef7 t\u1edbi.<\/p>\n\n<h2 class=\"wp-block-heading\">\u00dd ngh\u0129a c\u1ee7a m\u1ed1c 400 ppm<\/h2>\n\n<p>M\u1eb7c d\u00f9 m\u1ed1c 400 ppm c\u00f3 ph\u1ea7n t\u00f9y \u00fd, c\u00e1c nh\u00e0 khoa h\u1ecdc nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 nh\u01b0 m\u1ed9t l\u1eddi c\u1ea3nh t\u1ec9nh v\u1ec1 s\u1ef1 gia t\u0103ng li\u00ean t\u1ee5c c\u1ee7a n\u1ed3ng \u0111\u1ed9 CO2. B\u1ea5t k\u1ec3 hi\u1ec7n t\u1ea1i ch\u00fang ta \u1edf m\u1ee9c 390 ppm hay 400 ppm, th\u1ef1c t\u1ebf l\u00e0 n\u1ed3ng \u0111\u1ed9 CO2 trong kh\u00ed quy\u1ec3n \u0111ang gia t\u0103ng v\u00e0 \u0111\u01b0\u1ee3c d\u1ef1 ki\u1ebfn s\u1ebd ti\u1ebfp t\u1ee5c t\u0103ng.<\/p>\n\n<h2 class=\"wp-block-heading\">Ph\u1ea3n \u1ee9ng c\u1ee7a gi\u1edbi ch\u00ednh tr\u1ecb v\u00e0 c\u00f4ng ch\u00fang<\/h2>\n\n<p>M\u1ed9t s\u1ed1 nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 nh\u1eefng ng\u01b0\u1eddi \u1ee7ng h\u1ed9 hy v\u1ecdng r\u1eb1ng vi\u1ec7c v\u01b0\u1ee3t qua ng\u01b0\u1ee1ng 400 ppm s\u1ebd th\u00fac \u0111\u1ea9y c\u00e1c ch\u00ednh tr\u1ecb gia v\u00e0 c\u00f4ng ch\u00fang h\u00e0nh \u0111\u1ed9ng. Bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 khoa h\u1ecdc m\u00e0 c\u00f2n l\u00e0 v\u1ea5n \u0111\u1ec1 ch\u00ednh tr\u1ecb.<\/p>\n\n<p>&#8220;Ch\u00fang ta h\u00e3y hy v\u1ecdng r\u1eb1ng vi\u1ec7c \u0111\u1ea1t \u0111\u1ebfn m\u1ee9c 400 ppm c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t tia l\u1eeda \u0111\u1ec3 th\u1eafp s\u00e1ng m\u1ed9t nh\u1eadn th\u1ee9c m\u1edbi v\u1ec1 t\u00ednh c\u1ea5p b\u00e1ch c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu\u201d, Responding to Climate Change vi\u1ebft. &#8220;N\u1ebfu kh\u00f4ng, trong v\u00e0i th\u1eadp k\u1ef7 n\u1eefa, ch\u00fang ta s\u1ebd than kh\u00f3c cho s\u1ef1 thi\u1ebfu h\u00e0nh \u0111\u1ed9ng c\u1ee7a m\u00ecnh khi \u0111\u1ea1t \u0111\u1ebfn m\u1ee9c 450 ppm&#8221;.<\/p>\n\n<p>Tuy nhi\u00ean, kh\u00f4ng c\u00f3 g\u00ec \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed1c quan tr\u1ecdng n\u00e0y s\u1ebd c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn ch\u00ednh s\u00e1ch, th\u00e1i \u0111\u1ed9 ho\u1eb7c h\u00e0nh \u0111\u1ed9ng.<\/p>\n\n<h2 class=\"wp-block-heading\">Th\u00e1ch th\u1ee9c v\u00e0 m\u1ed1i quan ng\u1ea1i<\/h2>\n\n<p>M\u1ed9t trong nh\u1eefng th\u00e1ch th\u1ee9c l\u1edbn l\u00e0 tr\u1ea1m \u1edf Hawaii theo d\u00f5i n\u1ed3ng \u0111\u1ed9 CO2 \u0111ang c\u00f3 nguy c\u01a1 \u0111\u00f3ng c\u1eeda do c\u1eaft gi\u1ea3m ng\u00e2n s\u00e1ch. C\u00e1c nh\u00e0 khoa h\u1ecdc lo ng\u1ea1i r\u1eb1ng \u0111i\u1ec1u n\u00e0y s\u1ebd c\u1ea3n tr\u1edf kh\u1ea3 n\u0103ng theo d\u00f5i n\u1ed3ng \u0111\u1ed9 CO2 v\u00e0 gi\u00e1m s\u00e1t di\u1ec5n bi\u1ebfn c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu.<\/p>\n\n<p>&#8220;Th\u1eadt ng\u1edb ng\u1ea9n khi ch\u00fang ta ch\u1ecdn h\u00e0nh x\u1eed nh\u01b0 \u0111\u00e0 \u0111i\u1ec3u&#8221;, nh\u00e0 \u0111\u1ecba h\u00f3a h\u1ecdc Jim White tr\u1ea3 l\u1eddi ph\u1ecfng v\u1ea5n Nature. &#8220;Ch\u00fang ta kh\u00f4ng mu\u1ed1n bi\u1ebft c\u00f3 bao nhi\u00eau CO2 trong kh\u00ed quy\u1ec3n, trong khi ch\u00fang ta n\u00ean gi\u00e1m s\u00e1t nhi\u1ec1u h\u01a1n n\u1eefa&#8221;.<\/p>\n\n<h2 class=\"wp-block-heading\">T\u00e1c \u0111\u1ed9ng d\u00e0i h\u1ea1n<\/h2>\n\n<p>S\u1ef1 gia t\u0103ng n\u1ed3ng \u0111\u1ed9 CO2 trong kh\u00ed quy\u1ec3n c\u00f3 nhi\u1ec1u t\u00e1c \u0111\u1ed9ng d\u00e0i h\u1ea1n \u0111\u1ebfn h\u00e0nh tinh v\u00e0 c\u01b0 d\u00e2n c\u1ee7a ch\u00fang ta:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u1ef1 n\u00f3ng l\u00ean to\u00e0n c\u1ea7u:<\/strong> CO2 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t lo\u1ea1i kh\u00ed nh\u00e0 k\u00ednh, gi\u1eef nhi\u1ec7t trong kh\u00ed quy\u1ec3n v\u00e0 d\u1eabn \u0111\u1ebfn s\u1ef1 n\u00f3ng l\u00ean to\u00e0n c\u1ea7u.<\/li>\n<li><strong>Axit h\u00f3a \u0111\u1ea1i d\u01b0\u01a1ng:<\/strong> CO2 h\u00f2a tan trong n\u01b0\u1edbc bi\u1ec3n, t\u1ea1o th\u00e0nh axit cacbonic, c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i cho sinh v\u1eadt bi\u1ec3n.<\/li>\n<li><strong>C\u00e1c hi\u1ec7n t\u01b0\u1ee3ng th\u1eddi ti\u1ebft c\u1ef1c \u0111oan:<\/strong> M\u1ee9c CO2 gia t\u0103ng c\u00f3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c gia t\u0103ng t\u1ea7n su\u1ea5t v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng th\u1eddi ti\u1ebft c\u1ef1c \u0111oan, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u00e3o, n\u1eafng n\u00f3ng v\u00e0 h\u1ea1n h\u00e1n.<\/li>\n<li><strong>T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn s\u1ee9c kh\u1ecfe:<\/strong> N\u1ed3ng \u0111\u1ed9 CO2 cao c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 h\u00f4 h\u1ea5p v\u00e0 tim m\u1ea1ch.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">L\u1eddi k\u00eau g\u1ecdi h\u00e0nh \u0111\u1ed9ng<\/h2>\n\n<p>M\u1ed1c 400 ppm l\u00e0 l\u1eddi nh\u1eafc nh\u1edf r\u1eb1ng ch\u00fang ta kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ef1 m\u00e3n tr\u01b0\u1edbc bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ch\u00fang ta ph\u1ea3i h\u00e0nh \u0111\u1ed9ng ngay b\u00e2y gi\u1edd \u0111\u1ec3 gi\u1ea3m ph\u00e1t th\u1ea3i v\u00e0 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu.<\/p>\n\n<p>\u0110i\u1ec1u n\u00e0y bao g\u1ed3m:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Chuy\u1ec3n \u0111\u1ed5i sang c\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o<\/li>\n<li>C\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng<\/li>\n<li>B\u1ea3o v\u1ec7 r\u1eebng v\u00e0 c\u00e1c b\u1ec3 ch\u1ee9a c\u00e1c-bon kh\u00e1c<\/li>\n<li>\u0110\u1ea7u t\u01b0 v\u00e0o nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c gi\u1ea3i ph\u00e1p \u1ee9ng ph\u00f3 v\u1edbi kh\u00ed h\u1eadu<\/li>\n<li>V\u1eadn \u0111\u1ed9ng cho c\u00e1c ch\u00ednh s\u00e1ch v\u1ec1 kh\u00ed h\u1eadu \u1edf m\u1ecdi c\u1ea5p \u0111\u1ed9 ch\u00ednh quy\u1ec1n<\/li>\n<\/ul>\n\n<p>B\u1eb1ng c\u00e1ch h\u1ee3p t\u00e1c, ch\u00fang ta c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu v\u00e0 t\u1ea1o ra m\u1ed9t t\u01b0\u01a1ng lai b\u1ec1n v\u1eefng cho h\u00e0nh tinh c\u1ee7a ch\u00fang ta.<\/p>","protected":false},"excerpt":{"rendered":"<p>M\u1ed1c quan tr\u1ecdng v\u1ec1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu: N\u1ed3ng \u0111\u1ed9 CO2 g\u1ea7n 400 ppm N\u1ed3ng \u0111\u1ed9 carbon dioxide gia t\u0103ng L\u1ea7n \u0111\u1ea7u ti\u00ean trong l\u1ecbch s\u1eed lo\u00e0i ng\u01b0\u1eddi, n\u1ed3ng \u0111\u1ed9&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":[34,36,7651,7650,569],"class_list":["post-4162","post","type-post","status-publish","format-standard","hentry","category-climate-science","tag-climate-change","tag-environmental-science","tag-climate-crisis","tag-co2-levels","tag-global-warming"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/4162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=4162"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/4162\/revisions"}],"predecessor-version":[{"id":4163,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/4162\/revisions\/4163"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=4162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=4162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=4162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}