At this time, a governance framework does not exist either for SRM specifically or for geoengineering in general. In considering what governance might be needed to carry forward a potential geoengineering development and deployment effort, weather modification governance may offer a useful proxy, as it is a technology similar to SRM and is undertaken and governed at national and subnational levels in dozens of countries (WMO 2007). In particular, weather modification involves human-driven efforts to influence atmospheric processes that compose the weather on local scales through use of cloud seeding (U.S. Department of Commerce 1979).