Preliminary calculations using 1990 data indicated that acid depositions were already high enough to cause long-term damage in much of China, Indochina, and Japan. Future projections were downright alarming. For some areas in China they showed levels of acid deposition three times higher than the worst ever recorded in the infamous Black Triangle of Central Europe. But further development is necessary before it can fill that role properly. Truly comprehensive policy assessment would require, at a minimum, the addition of tools and data for nitrogen oxides, and, most importantly, for fine airborne particles.
Work is underway to verify and improve various model elements.