![](\"https:\/\/i0.wp.com\/www.weather.org.hk\/blog\/wp-content\/uploads\/2011\/03\/wind.jpg\")
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![](\"https:\/\/i0.wp.com\/www.weather.org.hk\/blog\/wp-content\/uploads\/2011\/03\/wind2.png\")
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\u5ef6\u4f38\u95b1\u8b80\uff1a 日本福島核電站今早再次爆炸，引起港人關注輻射污染物會否被帶到香港。互聯網上有傳言呼籲市民不要淋雨，指雨水可能已受污染。 香港會否受輻射污染物影響，言之尚早。現階段應留意日本及東亞地區的風向。由於日本東部正吹東至東北風，污染物可能向西南擴散影響東京一帶： 但與強寒潮相關的高壓區正由華北向東移動，日本風向將轉為西至西北，污染物將吹向太平洋。 當污染物隨風吹向太平洋時，濃度已大減，但當高壓區移至太平洋時，不排除污染物隨高壓區以南的偏東氣流，吹回菲律賓及中國東南沿岸。 此外，污染物的高度及大氣穩定性亦是考慮因素。假如核電站不再發生爆炸，污染物將停留在較低高度，影響的範圍較小。災區大氣穩定（包括降雨及降雪）亦會減低污染物擴散的範圍。 核洩漏其中一種主要的污染物為碘-131，半衰期（放射性減半所需時間）為8天，並可以透過服食碘片（碘化鉀），讓甲狀腺內的碘飽和，減少對碘-131的吸收，這也是現時日本政府的做法。除非核電站的核心融解並發生爆炸，現階段無需太過恐慌。 未來數天我們應繼續留意東亞地區風向變化，及核電站的最新情況。 延伸閱讀： 1. 日本現時風向 2. 東亞地區現時風向 3. NHK 電視台網上直播<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[4],"tags":[],"class_list":["post-906","post","type-post","status-publish","format-standard","hentry","category-4"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/906","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/comments?post=906"}],"version-history":[{"count":8,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/906\/revisions"}],"predecessor-version":[{"id":916,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/906\/revisions\/916"}],"wp:attachment":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/media?parent=906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/categories?post=906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/tags?post=906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n1. \u65e5\u672c\u73fe\u6642\u98a8\u5411<\/a>
\n2. \u6771\u4e9e\u5730\u5340\u73fe\u6642\u98a8\u5411<\/a>
\n3. NHK \u96fb\u8996\u53f0\u7db2\u4e0a\u76f4\u64ad <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"