Sulphate particles , meanwhile , survive only a few years in the atmosphere .
而硫酸盐微粒方案只能在短暂的几年内有效。
If it were engineered by intentionally putting sulphate into the stratosphere they would judge it to be deliberate .
如果能够通过工程的方法有意的在平流层中加入硫酸盐，人们就会将其判断为经过深思熟虑的行为。
For instance , he said , studies showed that putting sulphate aerosols into the atmosphere caused drying in vulnerable regions .
他举例称，研究显示，在大气层投放硫酸盐气溶胶，会导致环境脆弱地区出现干旱。
A 20km pipe designed to spray a shield of sulphate particles into the stratosphere could be deployed to mitigate the potentially devastating effects of climate change .
