Fluxos de rios mapeados por 35 anos revelam mudanças alarmantes

Fluxos de rios mapeados ao longo de 35 anos revelam mudanças alarmantes

[{"selector":"#anim-5c63b5c4-5d6a-48a3-80ff-2a7ab818118c","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a9913e5e-7b3d-4a64-8bd6-cb2aee68b224","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-7b471477-5ec2-4461-b059-38ebb33e2fa6","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-8decc576-19b4-4e2e-ae93-57a2ec85f426","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] REUTERS/Ricardo Moraes

[{"selector":"#anim-27765bdf-fb1c-474a-a640-c728ae0a4aba","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c5f6e725-40bc-4a66-9f07-beb8578d91c6","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-47ccb2b3-4dd7-413b-9334-140ab8ad84bd","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-d80d3448-74e0-4290-a03b-351a1302b4ec","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-98c36fd9-3989-4af2-b9f3-19f3f4f0765a [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(14.843749786673241%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Uma nova análise abrangente mostra que os quase 3 milhões de rios que cortam o planeta estão mudando de forma mais rápida — e desigual — do que os cientistas esperavam, com grandes implicações para o abastecimento de água potável , ecossistemas, navegação e risco de enchentes Gino Matteucci/Pexels

[{"selector":"#anim-4c8c5ce6-55f0-4f29-aaf1-7ed35887d0b8","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f9dde9e9-934e-42df-b797-863f1a830cf1","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0f856ac2-c155-4ba2-b227-1cc09ac6931b","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-2519ff8b-66ad-490f-a923-a4e53ebd22af","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-71c2c2b1-9400-48aa-b458-5101818921a6 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-21.309269638612253%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Pesquisadores utilizaram observações de satélite combinadas com modelagem computacional para reconstruir o fluxo diário de água de cada rio da Terra nos últimos 35 anos. O panorama global que surgiu foi preocupante Gotta Be Worth It/Pexels

[{"selector":"#anim-998a815c-e3e2-4bc0-b2ba-2d5aba5fb01d","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b260c78e-d629-46d3-9097-4aa42484a122","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-fe5cd8a2-2d76-40f0-b076-39dbb0de4d44","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-6347467a-8bfb-4b1e-80fe-0c8610a768c3","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-a3f24cc7-82c8-4adf-8db3-6903d819cb73 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(33.17307682097181%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Quase metade (44%) dos maiores rios em regiões de jusante está transportando menos água a cada ano, segundo um estudo publicado em dezembro de 2024 na revista Science Agência Brasil

[{"selector":"#anim-32526aa9-78f6-4987-8975-2ad1e35a2009","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1a3815cc-eed6-4ebe-9a0c-d2ca1a0604be","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1a5677e5-611f-4b3b-9c7b-164dea0884d5","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-fefdab3f-27f1-48f2-b3eb-310797fcf5f2","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Entre os sistemas que apresentaram quedas significativas estão o Congo (o segundo maior rio da África), o Yangtzé, na China, e a bacia do Rio da Prata, na América do Sul, afirmou Dongmei Feng, autora principal do estudo e professora de hidrologia na Universidade de Cincinnati Kmusser/Wikimedia Commons

[{"selector":"#anim-b56865db-086b-4ade-a2d0-d8b852ea1be8","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f99b581e-418c-49d5-ab00-9f20dc645e2e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-de022985-4747-4df2-98ba-14eb1554aafd","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-356ce3e4-af70-42a7-9d25-c92998a3185a","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-2513737f-19e4-43fa-8ce2-8dfd52b4e77f [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-33.17307682097181%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Os pequenos rios de nascente contam outra história: em regiões predominantemente montanhosas, 17% apresentaram aumento no fluxo Tânia Rêgo/Agência Brasil

[{"selector":"#anim-4f52d0c0-308e-4d89-9109-781aba58d882","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-13e9ba64-6f33-4b89-95ec-c4a3a4d84640","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9d1f880a-ff67-47ba-b94f-192b443a94af","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-97c51a14-d3e5-4c06-8f66-66e592908cd3","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Embora o estudo não tenha explorado as causas dessas mudanças, os autores afirmam que os principais fatores são a atividade humana e a crise climática impulsionada pelos combustíveis fósseis, que está alterando os padrões de chuva e acelerando o derretimento da neve Marcelo Camargo/Agência Brasil

[{"selector":"#anim-ee704332-47b1-465f-b4c1-7f2181816e9b","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-aae56486-0d99-4622-b19a-42bf80748601","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-770ca70f-dc56-4c5a-843f-75cea5d9eba0","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-12df2f38-540b-49f7-8966-0559d52bef84","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-91704d34-b6b9-4cd7-9b74-1dd50321174e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-31.22004780936666%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Quedas significativas no fluxo de rios de jusante significam menos água disponível nas maiores extensões de muitos rios do planeta, aponta o relatório. Isso se traduz em menos água doce para consumo humano, irrigação de lavouras e criação de gado Freepick

[{"selector":"#anim-98eb9b2f-6399-419d-b403-73c179515b3f","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-417e036b-5267-49fd-86a6-28ad122da04e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-27b03adf-9e50-4f2a-bb4f-fb1d07c65c9c","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-8b9a7450-a6f9-48a7-a36b-0efc2af9c15c","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-575226bd-f6c5-4084-83fa-0fc99c0a938c [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(33.17307682097181%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] “Existe uma ligação direta entre a atividade humana e as mudanças no nosso ciclo de água — essencial para a vida”, afirmou Hannah Cloke, professora de hidrologia na Universidade de Reading Fábio Rodrigues Pozzebom/Agência Brasil

CNNBRASIL.COM.BR

[{"selector":"#anim-7bf1c39f-c167-469f-872e-7a2bcae6b52e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-79597bd9-72df-4c48-9526-88aa4204a21c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f536a5e9-1d51-4b10-b22b-c0b8ac62e90f","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-665b15e1-53a2-4d09-ba2b-307578a0082d","keyframes":{"transform":["translate3d(0px, 2132.63615%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-57582711-6d6b-4ad0-a780-9f5d11426c7b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5f57ab7e-8cb4-42a4-8b87-5df4055fd08e","keyframes":{"transform":["translate3d(-117.84387%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8fabd426-a899-47b3-a801-72aafabb16ae","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-92538229-cc00-4878-a2ed-a7f57193051f","keyframes":{"transform":["translate3d(0px, 870.06218%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] ASCOM SEMA/GOVERNO DO PARÁ leia mais em