秦岭—淮河南北供暖格局变化及其影响因素

李双双,延军平,武亚群,汪成博

Spatiotemporal variability of actual heating energy efficiency and its influencing factors in areas south and north of Qinling-Huaihe Line

LI Shuangshuang,YAN Junping,WU Yaqun,WANG Chengbo

表2 北极涛动正负相位异常年份

Tab. 2 The Arctic Oscillation in positive and negative phases

标准 年份 正距平 ≥ 0.5 1972, 1975, 1988, 1989, 1991, 1992, 1994, 1999, 2001, 2006, 2007, 2011, 2013, 2014, 2016 负距平 ≤ -0.5 1961, 1962, 1964, 1965, 1968, 1969, 1976, 1979, 1980, 1984, 1985, 1986, 1995, 1997, 2000, 2005, 2009, 2012