Science. 1978 Nov 3;202(4367):513-5. doi: 10.1126/science.202.4367.513.
Twenty years of atmospheric transmission data from Mauna Loa Observatory show secular decreases at irregular intervals. In addition, a regular annual variation is present during unperturbed as well as perturbed periods. These variations in transmission can be measured to a few tenths of a percent from the data record. Transient decreases in transmission are strongly correlated with explosive volcanic eruptions that inject effluent into the stratosphere. Recovery from these ejections takes as much as 8 years and the recovery curve is linear. Observations in 1977 at Mauna Loa show that, for the first time since the Mount Agung eruption in 1963, the atmospheric transmission of direct-incidence solar irradiation at Mauna Loa returned to values measured in 1958 to 1962.
从莫纳罗亚天文台获得的 20 年大气传输数据显示，传输率会以不规则的间隔出现长期下降。此外，在未受干扰和受干扰的时期，都会存在有规律的年度变化。从数据记录中可以测量到传输率的百分之几的几十分之一的变化。传输率的瞬态下降与将废气喷射到平流层的爆发性火山喷发强烈相关。从这些喷发中恢复需要长达 8 年的时间，并且恢复曲线是线性的。1977 年在莫纳罗亚的观测结果表明，自 1963 年阿贡火山爆发以来，莫纳罗亚直接入射太阳辐射的大气传输首次恢复到 1958 年至 1962 年测量的值。
