Vaisala News issue 160 was published September 17, 2002. Dedicated to environmental measurement products, the issue discusses several customer cases such as ammonia detector user experiences, ABB Azipod Propulsion^® Systems, Orion Pharma, National Weather Services of the US, and China Meteorological Agency (CMA). New products and services, including the DM500 Precision SAW Hygrometer, DSS70A Sampling System and calibration reminder program, are also introduced. Moreover, the magazine contains articles from external authors, discussing moisture assessment in power transformers and ecological carbon dioxide measurements.