中纬度大气环流异常对2024年加州干旱引发山火的影响
杨耀先, 姚玉璧, 阳仁贵, 高瑜昺, 张伟伟, 邓梦雨, 肖淼元

The impact of mid-latitude atmospheric circulation anomalies on wildfires caused by California drought in summer 2024
YANG Yaoxian, YAO Yubi, YANG Rengui, GAO Yubin, ZHANG Weiwei, DENG Mengyu, XIAO Miaoyuan
图7 2024年7月1—11日平均的200 hPa位势高度扰动场(填色,单位:gpm)及T-N波活动通量(矢量箭头,单位:m2·s-2)(a)、500 hPa位势高度(填色,单位:gpm)及水平风(矢量箭头,单位:m·s-1)扰动场(b)、500 hPa垂直速度异常场(填色,单位:0.01 Pa·s-1)(c)及地面气温(绿色等值线,单位:K)与水汽压亏损(填色,单位: hPa)异常场(d)
(黄色实线和紫色实线分别为2024年7月1—11日和气候平均的该时段5 860 gpm位势高度等值线)
Fig.7 The averaged geopotential height perturbation field (the color shaded, Unit: gpm) and T-N wave activity fluxes (vectors, Unit: m2·s-2) at 200 hPa (a), geopotential height (the color shaded, Unit: gpm) and horizontal winds (vectors, Unit: m·s-1) perturbation field at 500 hPa (b), 500 hPa anomalous vertical velocity (the color shaded, Unit: 0.01 Pa·s-1) (c) and anomalous surface air temperature (green contour lines, Unit: K) and anomalous vapor pressure deficit field (the color shaded, Unit: hPa) (d) from 1 to 11 July 2024
(Yellow solid line and purple solid line represent 5 860 gpm feature line of geopotential height from1 to 11 July 2024 and climatology mean result, respectively)