Trong ba th\u1eadp k\u1ef7 qua, m\u1ed9t ph\u1ea7n \u0111\u00e1ng k\u1ec3 c\u00e1c con s\u00f4ng \u1edf Hoa K\u1ef3 \u0111\u00e3 tr\u1ea3i qua s\u1ef1 chuy\u1ec3n \u0111\u1ed5i \u0111\u00e1ng ch\u00fa \u00fd v\u1ec1 m\u00e0u s\u1eafc, chuy\u1ec3n t\u1eeb s\u1eafc th\u00e1i xanh lam sang v\u00e0ng v\u00e0 xanh l\u1ee5c. S\u1ef1 thay \u0111\u1ed5i n\u00e0y \u0111\u00e3 l\u00e0m d\u1ea5y l\u00ean m\u1ed1i quan ng\u1ea1i trong s\u1ed1 c\u00e1c nh\u00e0 khoa h\u1ecdc v\u00e0 nh\u00e0 m\u00f4i tr\u01b0\u1eddng, v\u00ec n\u00f3 c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u s\u1ef1 suy gi\u1ea3m s\u1ee9c kh\u1ecfe c\u1ee7a c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng th\u1ee7y tr\u00ean to\u00e0n qu\u1ed1c.<\/p>\n\n
C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i \u0110\u1ea1i h\u1ecdc North Carolina t\u1ea1i Chapel Hill \u0111\u00e3 ph\u00e2n t\u00edch g\u1ea7n 235.000 h\u00ecnh \u1ea3nh v\u1ec7 tinh do NASA v\u00e0 C\u01a1 quan Kh\u1ea3o s\u00e1t \u0110\u1ecba ch\u1ea5t Hoa K\u1ef3 ch\u1ee5p t\u1eeb n\u0103m 1984 \u0111\u1ebfn n\u0103m 2018. Nh\u1eefng ph\u00e1t hi\u1ec7n c\u1ee7a h\u1ecd, \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed Geophysical Research Letters, ti\u1ebft l\u1ed9 r\u1eb1ng m\u1ed9t ph\u1ea7n ba c\u00e1c con s\u00f4ng \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u \u0111\u00e3 thay \u0111\u1ed5i m\u00e0u s\u1eafc qua nhi\u1ec1u th\u1eadp k\u1ef7.<\/p>\n\n
Ph\u00e2n t\u00edch cho th\u1ea5y 56 ph\u1ea7n tr\u0103m c\u00e1c con s\u00f4ng l\u1edbn c\u00f3 m\u00e0u v\u00e0ng, trong khi 38 ph\u1ea7n tr\u0103m c\u00f3 m\u00e0u xanh l\u1ee5c. M\u1eb7c d\u00f9 c\u00e1c con s\u00f4ng c\u00f3 th\u1ec3 t\u1ef1 nhi\u00ean thay \u0111\u1ed5i m\u00e0u s\u1eafc trong su\u1ed1t c\u1ea3 n\u0103m do c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 tuy\u1ebft tan ho\u1eb7c l\u01b0\u1ee3ng m\u01b0a, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ph\u00e1t hi\u1ec7n ra r\u1eb1ng kho\u1ea3ng m\u1ed9t ph\u1ea7n ba c\u00e1c con s\u00f4ng \u0111\u00e3 tr\u1ea3i qua s\u1ef1 thay \u0111\u1ed5i m\u00e0u s\u1eafc k\u00e9o d\u00e0i.<\/p>\n\n
M\u00e0u s\u1eafc c\u1ee7a m\u1ed9t con s\u00f4ng c\u00f3 th\u1ec3 cung c\u1ea5p th\u00f4ng tin gi\u00e1 tr\u1ecb v\u1ec1 s\u1ee9c kh\u1ecfe c\u1ee7a n\u00f3. M\u00e0u xanh lam th\u01b0\u1eddng ch\u1ec9 ra ngu\u1ed3n n\u01b0\u1edbc s\u1ea1ch, trong l\u00e0nh, trong khi tr\u1ea7m t\u00edch c\u00f3 th\u1ec3 khi\u1ebfn s\u00f4ng chuy\u1ec3n sang m\u00e0u v\u00e0ng v\u00e0 t\u1ea3o n\u1edf hoa c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1eafc xanh l\u1ee5c.<\/p>\n\n
C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ph\u00e1t hi\u1ec7n ra r\u1eb1ng nh\u1eefng thay \u0111\u1ed5i m\u00e0u s\u1eafc m\u1ea1nh m\u1ebd nh\u1ea5t t\u1eadp trung xung quanh c\u00e1c \u0111\u1eadp, khu v\u1ef1c n\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c trung t\u00e2m \u0111\u00f4 th\u1ecb. C\u00e1c \u0111\u1eadp c\u00f3 th\u1ec3 gi\u1eef l\u1ea1i tr\u1ea7m t\u00edch, d\u1eabn \u0111\u1ebfn \u0111\u1ed9 \u0111\u1ee5c t\u0103ng v\u00e0 n\u01b0\u1edbc chuy\u1ec3n sang m\u00e0u v\u00e0ng. D\u00f2ng ch\u1ea3y n\u00f4ng nghi\u1ec7p c\u0169ng c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y \u00f4 nhi\u1ec5m tr\u1ea7m t\u00edch, trong khi c\u00e1c khu v\u1ef1c \u0111\u00f4 th\u1ecb c\u00f3 th\u1ec3 th\u1ea3i ra c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m k\u00edch th\u00edch s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a t\u1ea3o.<\/p>\n\n
S\u1ee9c kh\u1ecfe c\u1ee7a c\u00e1c con s\u00f4ng c\u00f3 t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi. C\u00e1c con s\u00f4ng cung c\u1ea5p n\u01b0\u1edbc u\u1ed1ng, h\u1ed7 tr\u1ee3 c\u00e1c h\u1ec7 sinh th\u00e1i d\u01b0\u1edbi n\u01b0\u1edbc v\u00e0 mang \u0111\u1ebfn c\u00e1c ho\u1ea1t \u0111\u1ed9ng gi\u1ea3i tr\u00ed. S\u1ef1 thay \u0111\u1ed5i m\u00e0u s\u1eafc c\u1ee7a s\u00f4ng c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc suy gi\u1ea3m, c\u00f3 th\u1ec3 g\u00e2y ra r\u1ee7i ro cho s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi.<\/p>\n\n
Tr\u1ea7m t\u00edch c\u00f3 th\u1ec3 l\u00e0m t\u1eafc ngh\u1ebdn c\u00e1c b\u1ed9 l\u1ecdc n\u01b0\u1edbc v\u00e0 khi\u1ebfn vi\u1ec7c x\u1eed l\u00fd n\u01b0\u1edbc tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n. T\u1ea3o n\u1edf hoa c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c \u0111\u1ed9c t\u1ed1 c\u00f3 th\u1ec3 g\u00e2y b\u1ec7nh cho ng\u01b0\u1eddi v\u00e0 \u0111\u1ed9ng v\u1eadt. Ngo\u00e0i ra, n\u01b0\u1edbc \u0111\u1ed5i m\u00e0u c\u00f3 th\u1ec3 kh\u00f4ng h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ea9m m\u1ef9, khi\u1ebfn m\u1ecdi ng\u01b0\u1eddi kh\u00f4ng mu\u1ed1n b\u01a1i l\u1ed9i, c\u00e2u c\u00e1 ho\u1eb7c ch\u00e8o thuy\u1ec1n.<\/p>\n\n
Theo truy\u1ec1n th\u1ed1ng, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 d\u1ef1a v\u00e0o c\u00e1c m\u1eabu n\u01b0\u1edbc \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 s\u1ee9c kh\u1ecfe c\u1ee7a s\u00f4ng. Tuy nhi\u00ean, vi\u1ec7c thu th\u1eadp c\u00e1c m\u1eabu n\u01b0\u1edbc c\u00f3 th\u1ec3 t\u1ed1n th\u1eddi gian v\u00e0 ti\u1ec1n b\u1ea1c. H\u00ecnh \u1ea3nh v\u1ec7 tinh cung c\u1ea5p m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u1ec3 theo d\u00f5i s\u1ee9c kh\u1ecfe c\u1ee7a s\u00f4ng tr\u00ean c\u00e1c khu v\u1ef1c r\u1ed9ng l\u1edbn.<\/p>\n\n
B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh v\u1ec7 tinh, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh nh\u1eefng khu v\u1ef1c m\u00e0 c\u00e1c con s\u00f4ng \u0111ang thay \u0111\u1ed5i m\u00e0u s\u1eafc nhanh ch\u00f3ng. Th\u00f4ng tin n\u00e0y c\u00f3 th\u1ec3 gi\u00fap h\u1ecd \u01b0u ti\u00ean c\u00e1c khu v\u1ef1c c\u1ea7n nghi\u00ean c\u1ee9u s\u00e2u h\u01a1n v\u00e0 c\u00e1c n\u1ed7 l\u1ef1c b\u1ea3o t\u1ed3n \u0111\u01b0\u1ee3c nh\u1eafm m\u1ee5c ti\u00eau.<\/p>\n\n
B\u1ea3o v\u1ec7 v\u00e0 ph\u1ee5c h\u1ed3i s\u1ee9c kh\u1ecfe c\u1ee7a c\u00e1c con s\u00f4ng \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn \u0111a m\u1eb7t. C\u00e1c \u0111\u1eadp n\u00ean \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 v\u1eadn h\u00e0nh \u0111\u1ec3 gi\u1ea3m thi\u1ec3u vi\u1ec7c gi\u1eef l\u1ea1i tr\u1ea7m t\u00edch. C\u00e1c ho\u1ea1t \u0111\u1ed9ng n\u00f4ng nghi\u1ec7p n\u00ean \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 gi\u1ea3m d\u00f2ng ch\u1ea3y v\u00e0 x\u00f3i m\u00f2n. C\u00e1c khu v\u1ef1c \u0111\u00f4 th\u1ecb c\u1ea7n \u0111\u1ea7u t\u01b0 v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd n\u01b0\u1edbc m\u01b0a \u0111\u1ec3 ng\u0103n ch\u1eb7n \u00f4 nhi\u1ec5m x\u00e2m nh\u1eadp v\u00e0o c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng th\u1ee7y.<\/p>\n\n
Ngo\u00e0i ra, gi\u00e1o d\u1ee5c c\u00f4ng ch\u00fang v\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng ti\u1ebfp c\u1eadn c\u1ed9ng \u0111\u1ed3ng r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 n\u00e2ng cao nh\u1eadn th\u1ee9c v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a s\u1ee9c kh\u1ecfe s\u00f4ng v\u00e0 khuy\u1ebfn kh\u00edch m\u1ecdi ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng th\u1ee7y c\u1ee7a ch\u00fang ta.<\/p>\n\n
B\u1eb1ng c\u00e1ch h\u1ee3p t\u00e1c c\u00f9ng nhau, c\u00e1c nh\u00e0 khoa h\u1ecdc, nh\u00e0 ho\u1ea1ch \u0111\u1ecbnh ch\u00ednh s\u00e1ch v\u00e0 c\u00f4ng ch\u00fang c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c con s\u00f4ng c\u1ee7a ch\u00fang ta v\u1eabn kh\u1ecfe m\u1ea1nh v\u00e0 tr\u00e0n \u0111\u1ea7y s\u1ee9c s\u1ed1ng cho c\u00e1c th\u1ebf h\u1ec7 mai sau.<\/p>","protected":false},"excerpt":{"rendered":"
S\u1ee9c kh\u1ecfe c\u1ee7a s\u00f4ng ng\u00f2i t\u1ea1i Hoa K\u1ef3: B\u1ee9c tranh to\u00e0n c\u1ea3nh \u0111ang thay \u0111\u1ed5i Trong ba th\u1eadp k\u1ef7 qua, m\u1ed9t ph\u1ea7n \u0111\u00e1ng k\u1ec3 c\u00e1c con s\u00f4ng \u1edf Hoa K\u1ef3…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[34,9566,890,889,821,20137],"class_list":["post-15071","post","type-post","status-publish","format-standard","hentry","category-environmental-science","tag-climate-change","tag-water-quality","tag-environmental-monitoring","tag-satellite-imagery","tag-data-visualization","tag-river-health"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/15071","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=15071"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/15071\/revisions"}],"predecessor-version":[{"id":15072,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/15071\/revisions\/15072"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=15071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=15071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=15071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}