The Air District will host an in-person conversation with Air District Board Chair Davina Hurt on Saturday, December 7, 2024, from 12 noon – 1 PM at the Greenhouse Community Room in the San Lorenzo Public Library. The conversation will focus on community questions and concerns regarding air quality issues and climate change.
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納帕縣 (Napa County)
瞭解納帕縣，包括它的氣候、潛在空氣污染問題及目前的空氣品質。您還可以查看納帕縣即將發生的空氣局事件，閱讀瞭解當地為改善空氣品質所做的努力。
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Air District to represent Bay Area at COP29十一月 12, 2024
The Air District is sending representatives to attend the United Nations Climate Change Conference, or COP29, in Baku, Azerbaijan from November 11 through November 22. Air District Board of Directors Chair Davina Hurt and Executive Officer Dr. Philip Fine will hold a virtual press conference on Tuesday, November 19 at 10 AM. Bay Area residents are invited to join the discussion, ask questions and share their concerns by connecting with the Air District on Facebook during the livestream press conference.
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The Air District has released a woodsmoke White Paper for public comment, which provides extensive information on wood burning in the Bay Area, the current state of the regulatory landscape for wood-burning devices, and a discussion of potential recommendations to further minimize woodsmoke emissions and exposures.
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氣候
納帕谷兩側的山脈阻隔了全年大部分的西北盛行風。納帕縣陽光充足，夏季時山谷裡十分溫暖，尤其是北端。冬季通常氣候溫和，夜間涼爽，白天氣溫溫和到適中。冬天時，山谷的北段溫度稍低。全縣通常以靜風為主。海拔低的地區年平均降水量在 24 英寸左右，山裡的年平均降水量在 40 英寸以上。
納帕縣 (Napa County) 的氣候還受到區域性灣區氣候的影響。
納帕縣的空氣品質
臭氧和細顆粒物污染（即 PM2.5）是影響舊金山灣區的主要區域性空氣污染物。臭氧問題主要發生在夏季，細顆粒物污染主要發生在冬季。
在納帕縣，臭氧很少超過健康標準，PM2.5 偶爾會達到不健康的濃度。納帕縣 PM2.5 超標的原因有多個。 首先，全縣大部分地區背風，把 PM2.5 困在了纳帕谷內部。
其次，大部分地區靠北，無法受到聖帕布洛灣 (San Pablo Bay) 的氣溫調節作用影響，因此納帕縣夜間的溫度是灣區最低的。這導致更多的人使用火爐，焚燒木材，進而使 PM2.5 的水平升高。最後，冬季吹的東風經常把中央谷地細顆粒物含量較高的空氣運送到卡奇尼茲海峽 (Carquinez Strait)，然後再吹到西面的索拉諾縣和南面的納帕縣。
資源團隊
納帕縣的愛惜空氣資源團隊在當地社區倡導降低空氣污染的方式。
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上次更新： 2016/11/8