T\u01b0\u01a1ng truy\u1ec1n \u0111\u1eddi x\u01b0a Th\u1ee7y th\u1ea7n v\u00e0 H\u1ecfa th\u1ea7n g\u1eb7p nhau, v\u00ec tranh quy\u1ec1n x\u01b0ng b\u00e1 thi\u00ean h\u1ea1 n\u00ean s\u00e1t ph\u1ea1t l\u1eabn nhau. T h\u1ee7y th\u1ea7n \u0111\u1ea1i b\u1ea1i v\u00ec c\u0103m t\u1ee9c m\u00e0 h\u00fac \u0111\u1ea7u v\u00e0o c\u00e1c ng\u1ecdn n\u00fai chung quanh. K\u1ebft qu\u1ea3 l\u00e0 \u0111\u1ed5 m\u1ed9t c\u1ed9t tr\u1ee5 ch\u1ed1ng tr\u1eddi, g\u00e2y ra m\u1ed9t l\u1ed7 th\u1ee7ng l\u1edbn. \u0110\u00f3 l\u00e0 truy\u1ec7n th\u1ea7n tho\u1ea1i Trung Qu\u1ed1c, kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 th\u1eadt.<\/p>\n\n\n\n
Ng\u00e0y nay \u1edf tr\u00ean kh\u00f4ng v\u00f9ng c\u1ef1c Tr\u00e1i \u0110\u1ea5t \u0111\u00e3 c\u00f3 l\u1ed7 th\u1ee7ng l\u1edbn. C\u00e1c nh\u00e0 khoa h\u1ecdc g\u1ecdi \u0111\u00f3 l\u00e0 l\u1ed7 th\u1ee7ng t\u1ea7ng ozon.<\/p>\n\n\n\n
\u1ede t\u1ea7ng \u0111\u1eb3ng nhi\u1ec7t c\u00e1ch m\u1eb7t \u0111\u1ea5t t\u1eeb 10 – 50 km c\u00f3 m\u1ed9t t\u1ea7ng kh\u00f4ng kh\u00ed g\u1ecdi l\u00e0 t\u1ea7ng ozon. Ph\u00e2n t\u1eed ozon g\u1ed3m ba nguy\u00ean t\u1eed oxi c\u1ea5u t\u1ea1o n\u00ean, t\u1ee9c l\u00e0 O3. T\u1ea7ng ozon c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 99% tia t\u1eed ngo\u1ea1i c\u1ee7a M\u1eb7t Tr\u1eddi, l\u00e0 c\u00e1i d\u00f9 b\u1ea3o h\u1ed9 lo\u00e0i ng\u01b0\u1eddi v\u00e0 c\u00e1c sinh v\u1eadt kh\u00e1c tr\u00ean T r\u00e1i \u0110\u1ea5t. Nh\u01b0ng c\u00e1i d\u00f9 b\u1ea3o h\u1ed9 n\u00e0y \u0111\u00e3 b\u1ecb ph\u00e1 ho\u1ea1i nghi\u00eam tr\u1ecdng. M\u1ea5y n\u0103m g\u1ea7n \u0111\u00e2y c\u00e1c nh\u00e0 khoa h\u1ecdc kh\u1ea3o s\u00e1t Nam C\u1ef1c ph\u00e1t hi\u1ec7n th\u1ea5y trong t\u1ea7ng ozon tr\u00ean kh\u00f4ng c\u1ee7a Nam C\u1ef1c \u0111\u00e3 xu\u1ea5t hi\u1ec7n m\u1ed9t l\u1ed7 th\u1ee7ng l\u1edbn. T heo s\u1ef1 kh\u00e1m ph\u00e1 c\u1ee7a v\u1ec7 tinh kh\u00ed t\u01b0\u1ee3ng qu\u1ef9 \u0111\u1ea1o c\u1ef1c V\u0169 v\u00e2n s\u1ed1 7 th\u00ec l\u1ed7 th\u1ee7ng n\u00e0y n\u1eb1m g\u1ea7n \u0111i\u1ec3m c\u1ef1c Nam C\u1ef1c, h\u00ecnh elip. Di\u1ec7n t\u00edch c\u1ee7a n\u00f3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng di\u1ec7n t\u00edch n\u01b0\u1edbc M\u1ef9, \u0111\u1ed9 d\u00e0y v\u01b0\u1ee3t qu\u00e1 \u0111\u1ed9 cao \u0111\u1ec9nh Ch\u00f4m\u00f4lungma c\u1ee7a T rung Qu\u1ed1c.<\/p>\n\n\n\n
Kh\u00f4ng ch\u1ec9 c\u00f3 m\u1ed9t l\u1ed7 th\u1ee7ng \u0111\u00f3 m\u00e0 g\u1ea7n \u0111\u00e2y c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f2n ph\u00e1t hi\u1ec7n tr\u00ean kh\u00f4ng c\u1ee7a v\u00f9ng B\u1eafc C\u1ef1c c\u0169ng c\u00f3 m\u1ed9t l\u1ed7 th\u1ee7ng ozon d\u00e0y t\u1eeb 19 – 24 km. C\u00f3 ng\u01b0\u1eddi c\u00f2n ph\u00e1t hi\u1ec7n t\u1ea7ng ozon tr\u00ean to\u00e0n c\u1ea7u \u0111ang c\u00f3 xu th\u1ebf m\u1ecfng d\u1ea7n. \u201cC\u00e1c l\u1ed7 th\u1ee7ng ozon\u201d do \u0111\u00e2u t\u1ea1o ra? \u0110\u1ec3 gi\u1ea3i th\u00edch v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 nhi\u1ec1u \u00fd ki\u1ebfn kh\u00e1c nhau. C\u00f3 ng\u01b0\u1eddi cho r\u1eb1ng, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 li\u00ean quan v\u1edbi n\u1ea1n ch\u00e1y r\u1eebng li\u00ean ti\u1ebfp \u1edf v\u00f9ng Amazon, c\u00f3 ng\u01b0\u1eddi cho r\u1eb1ng, t\u1ea7ng ozon \u0111ang bi\u1ebfn \u0111\u1ed5i c\u00f3 th\u1ec3 do li\u00ean quan v\u1edbi chu k\u1ef3 bi\u1ebfn \u0111\u1ed5i t\u1ef1 nhi\u00ean c\u1ee7a ho\u1ea1t \u0111\u1ed9ng c\u00e1c v\u1ebft \u0111en tr\u00ean M\u1eb7t Tr\u1eddi, m\u1ed9t s\u1ed1 h\u1ecdc gi\u1ea3<\/a> kh\u00e1c l\u1ea1i cho r\u1eb1ng, s\u1edf d\u0129 xu\u1ea5t hi\u1ec7n l\u1ed7 th\u1ee7ng t\u1ea7ng ozon \u1edf c\u00e1c c\u1ef1c l\u00e0 v\u00ec \u1edf \u0111\u00f3 kh\u00ed h\u1eadu l\u1ea1nh d\u1ea7n. Ban \u0111\u00eam \u1edf \u0111i\u1ec3m c\u1ef1c c\u1ee7a T r\u00e1i \u0110\u1ea5t, hi\u1ec7u su\u1ea5t trao \u0111\u1ed5i nhi\u1ec7t r\u1ea5t th\u1ea5p, do \u0111\u00f3 nhi\u1ec7t \u0111\u1ed9 tr\u00ean kh\u00f4ng \u1edf \u0111i\u1ec3m c\u1ef1c T r\u00e1i \u0110\u1ea5t r\u1ea5t th\u1ea5p, t\u1ea7ng kh\u00f4ng kh\u00ed \u0111\u01b0\u1ee3c \u0111\u1ed1t n\u00f3ng, n\u00ean xu\u1ea5t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng kh\u00f4ng kh\u00ed v\u1eadn \u0111\u1ed9ng \u0111i l\u00ean, \u0111\u01b0a c\u00e1c ch\u1ea5t kh\u00ed trong t\u1ea7ng \u0111\u1ed1i l\u01b0u c\u00f3 h\u00e0m l\u01b0\u1ee3ng kh\u00ed ozon th\u1ea5p \u0111i v\u00e0o t\u1ea7ng b\u00ecnh l\u01b0u, thay th\u1ebf ch\u1ea5t kh\u00ed trong t\u1ea7ng b\u00ecnh l\u01b0u v\u1ed1n c\u00f3 h\u00e0m l\u01b0\u1ee3ng kh\u00ed ozon cao. Nh\u01b0 v\u1eady t\u1ed5ng l\u01b0\u1ee3ng ozon trong c\u1ea3 t\u1ea7ng b\u1ecb gi\u1ea3m th\u1ea5p r\u00f5 r\u1ec7t.<\/p>\n\n\n\n Nh\u01b0ng \u0111a s\u1ed1 c\u00e1c nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng, c\u00e1c l\u1ed7 th\u1ee7ng ozon tr\u00ean v\u00f9ng c\u1ef1c T r\u00e1i \u0110\u1ea5t l\u00e0 do con ng\u01b0\u1eddi g\u00e2y n\u00ean. C\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 s\u1ef1 t\u0103ng kh\u00f4ng ng\u1eebng c\u1ee7a t\u1ee7 l\u1ea1nh gia \u0111\u00ecnh v\u00e0 c\u00e1c nh\u00e0 m\u00e1y \u0111\u00f4ng l\u1ea1nh, khi\u1ebfn cho m\u00f4i tr\u01b0\u1eddng l\u00e0m l\u1ea1nh freon th\u1ea3i v\u00e0o trong kh\u00f4ng kh\u00ed m\u1ed9t l\u01b0\u1ee3ng l\u1edbn clo cacbua, flo cacbua. Nh\u1eefng ch\u1ea5t n\u00e0y kh\u00f4ng gi\u1ed1ng nh\u01b0 nh\u1eefng h\u00f3a ch\u1ea5t kh\u00e1c, n\u00f3 kh\u00f4ng th\u1ec3 ph\u00e2n gi\u1ea3i \u0111\u01b0\u1ee3c trong kh\u00f4ng kh\u00ed. N\u00f3 bay tr\u00f4i n\u1ed5i l\u00ean t\u1ea7ng \u0111\u1eb3ng nhi\u1ec7t, d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a tia t\u1eed ngo\u1ea1i m\u00e0 sinh ra nh\u1eefng nguy\u00ean t\u1eed flo tr\u00f4i n\u1ed5i. C\u00e1c nguy\u00ean t\u1eed flo n\u00e0y h\u1ea5p th\u1ee5 m\u1ed9t nguy\u00ean t\u1eed oxi trong kh\u00ed ozon (m\u1ed9t nguy\u00ean t\u1eed flo c\u00f3 th\u1ec3 ph\u00e1 ho\u1ea1i g\u1ea7n 10 v\u1ea1n ph\u00e2n t\u1eed ozon) khi\u1ebfn cho ozon bi\u1ebfn th\u00e0nh kh\u00ed O2, do \u0111\u00f3 trong kh\u00f4ng kh\u00ed xu\u1ea5t hi\u1ec7n l\u1ed7 th\u1ee7ng ozon. V\u00ec t\u1ea7ng ozon – d\u00f9 b\u1ea3o h\u1ed9 c\u1ee7a T r\u00e1i \u0110\u1ea5t b\u1ecb ph\u00e1 ho\u1ea1i, cho n\u00ean s\u00e1t th\u1ee7 v\u00f4 h\u00ecnh c\u1ee7a tia t\u1eed ngo\u1ea1i b\u1ecb ch\u1ecdc th\u1ee7ng, \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn lo\u00e0i ng\u01b0\u1eddi v\u00e0 sinh v\u1eadt s\u1ed1ng tr\u00ean Tr\u00e1i \u0110\u1ea5t. Do \u0111\u00f3 \u0111\u1ea7u th\u00e1ng 3 n\u0103m 1989, c\u00e1c v\u1ecb \u0111\u1ee9ng \u0111\u1ea7u ch\u00ednh ph\u1ee7 c\u1ee7a 123 n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi v\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 m\u1edf H\u1ed9i ngh\u1ecb qu\u1ed1c t\u1ebf \u1edf London v\u1edbi chuy\u00ean \u0111\u1ec1 B\u1ea3o v\u1ec7 t\u1ea7ng ozon c\u1ee7a kh\u00ed quy\u1ec3n. H\u1ed9i ngh\u1ecb \u0111\u00e3 k\u00eau g\u1ecdi nh\u00e2n d\u00e2n to\u00e0n th\u1ebf gi\u1edbi l\u1eadp t\u1ee9c h\u00e0nh \u0111\u1ed9ng ng\u0103n ch\u1eb7n s\u1eed d\u1ee5ng c\u00e1c m\u00f4i ch\u1ea5t \u0111\u00f4ng l\u1ea1nh, b\u1ea3o v\u1ec7 t\u1ea7ng ozon c\u1ee7a kh\u00ed quy\u1ec3n, nhanh ch\u00f3ng v\u00e1 l\u1ea1i l\u1ed7 th\u1ee7ng ozon \u0111\u1ec3 c\u1ee9u v\u00e3n T r\u00e1i \u0110\u1ea5t!<\/p>\n\n\n\n T \u1eeb kho\u00e1: L\u1ed7 th\u1ee7ng ozon; M\u00f4i ch\u1ea5t \u0111\u00f4ng l\u1ea1nh freon<\/p>\n","protected":false},"excerpt":{"rendered":" T\u01b0\u01a1ng truy\u1ec1n \u0111\u1eddi x\u01b0a Th\u1ee7y th\u1ea7n v\u00e0 H\u1ecfa th\u1ea7n g\u1eb7p nhau, v\u00ec tranh quy\u1ec1n x\u01b0ng b\u00e1 thi\u00ean h\u1ea1 n\u00ean s\u00e1t ph\u1ea1t l\u1eabn nhau. T h\u1ee7y th\u1ea7n \u0111\u1ea1i b\u1ea1i v\u00ec c\u0103m t\u1ee9c m\u00e0 h\u00fac \u0111\u1ea7u v\u00e0o c\u00e1c ng\u1ecdn n\u00fai chung quanh. K\u1ebft qu\u1ea3 l\u00e0 \u0111\u1ed5 m\u1ed9t c\u1ed9t tr\u1ee5 ch\u1ed1ng tr\u1eddi, g\u00e2y ra m\u1ed9t l\u1ed7 th\u1ee7ng l\u1edbn. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,19],"tags":[],"class_list":["post-9849","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9849","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=9849"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9849\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9849"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9849"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}