【摘要】 本文分析了川东伏旱与大气非绝热热流量的关系，结果表明：与四川“西涝东旱”气候特征相关的川东伏旱与北半球大范围非绝热热流量异常相联系。夏季月平均非绝热热流量距平场，亚欧范围内兼异显著。重旱年极地维持1波，无旱年维持2波，90—120°E、20-40°N关键区，重旱年北正南负、东正西负；轻旱年东正西负；无旱年北负南正、东负西正。川东重旱年、轻旱年为负距平区，无旱年为正距平区。并且，青藏高原加热作用，通过影响东亚大气环流系统而对川东伏旱形成有重要影响。最后，提出了根据冬-复地气遥相关事实，应用参数化方法，建立川东伏旱长期预报方法的可能性。更多还原

【Abstract】 This paper analyzes the relationship between the mid-summer drought in east Sichuan Province,and the atmospheric diabatic heat flow (ADHF). The result shows that the mid-summer drought asso-ciated with "the western waterlogging and the eastern drought", which is one of the climatic characteris-tics in Sichuan Province, has close relations with ADHF over the Northern Hemisphere. For the depar-ture fleld of monthly ADHF in summer, its differences are significant in Eurasia. In polar region, it ex-hibits one wave in severe drought years and two waves in non-drought year. In the region between 90°Eand 120°E and 20°N and 40°N, the departure field of ADHF exhibits an opposite pattern during theyears of severe droughts and non-droughts. In east Sichuan the departure of ADHF is negative indrought years and positive in non-drought years. Furthermore, the heating over the Qinghai-XizangPlateau has much influence on the mid-summer drought in east Sichuan by way of affecting the circula-tion system in East Asia. Finally, it is pointed out that developing long-range forecasting method ofmid-summer drought based on summer-winter teleconnection facts is possible.更多还原