{"id":571,"date":"2006-07-13T05:00:00","date_gmt":"2006-07-12T21:00:00","guid":{"rendered":"http:\/\/www.weather.org.hk\/blog\/?p=571"},"modified":"2010-11-11T18:26:41","modified_gmt":"2010-11-11T10:26:41","slug":"%e7%86%b1%e5%b8%b6%e6%b0%a3%e6%97%8b%e8%88%87%e9%85%b7%e7%86%b1%e5%a4%a9%e6%b0%a3","status":"publish","type":"post","link":"https:\/\/www.weather.org.hk\/news\/%e7%86%b1%e5%b8%b6%e6%b0%a3%e6%97%8b%e8%88%87%e9%85%b7%e7%86%b1%e5%a4%a9%e6%b0%a3\/","title":{"rendered":"\u71b1\u5e36\u6c23\u65cb\u8207\u9177\u71b1\u5929\u6c23"},"content":{"rendered":"

\t\t\t\t\t\t\t\t\t<\/p>\n

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<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

酷熱天氣是指氣溫 33 度或以上的情況。強烈熱帶風暴碧利斯迫近台灣之際，香港受碧利斯外圍環流影響，部分地區氣溫上升至36度，更有雷暴發展。 在一個成熟（指強烈熱帶風暴以上級數）的熱帶氣旋內，空氣在地面向中心流入，在中心附近上升，然後在高空向四周散開。散開的空氣下沉至地面，因為氣壓上升，空氣被壓縮而升溫。當香港位於下沉空氣影響的範圍內，天氣便變得酷熱。加上（北半球）熱帶氣旋以逆時針旋轉，當熱帶氣旋迫近台灣時，熱帶氣旋位於香港東方，香港吹西至西北風，把內陸高溫的空氣帶到香港。 由於高溫令大氣不穩定，內陸產生的雷暴隨著偏北風於黃昏時到達香港。因此夏天天氣報告如出現「黃昏有局部地區性雷暴」，很可能暗示有熱帶氣旋接近。 天氣酷熱加上高濕度，人體散熱受阻，容易出現中暑，因此如在戶外活動或工作要特別小心，避免長時間曝曬及多喝水補充。美國國家氣象局利用溫度和濕度制定酷熱指數（heat index），當指數超過 40 度時便達危險水平，要預防中暑。今日香港各區的酷熱指數接近 50 度，因此令人非常悶熱甚至呼吸困難。 隨著碧利斯橫過台灣並於中國東南沿岸登陸，碧利斯南面的雨帶將影響香港，在週末帶來有雨的天氣，對降溫很有幫助。<\/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-571","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\/571","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=571"}],"version-history":[{"count":1,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/571\/revisions"}],"predecessor-version":[{"id":748,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/571\/revisions\/748"}],"wp:attachment":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/media?parent=571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/categories?post=571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/tags?post=571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}