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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Q J R Meteorol Soc. 2017 Jun 21;143(707):2481–2495. doi: 10.1002/qj.3101

Figure 14.

Figure 14

NR JJA average, zonal mean (a) non-orographic absolute gravity wave momentum flux at ∼15 km (black) and ∼20 km (grey), (b) precipitation rate, and (c) the frontogenesis function. The dashed contour in (b) indicates the percentage of time that the precipitation rate exceeds 10 mm h−1, using the axis on the right. [Colour figure can be viewed at wileyonlinelibrary.com].