Electronic waste is a widespread environmental problem. From all waste streams, e-waste is registering one of the largest growing rates (between 3% and 5%). In Mexico, the e-waste recovery system comprises a mix of formal and informal sectors not well known to date. The goal of this article was to analyze electronic waste in Mexico through the active actors in the recovery chain. This article presents the evolution of studies on electronic waste in Mexico. The legal regulations and public policies were analyzed, as were the existing practices of electronic waste handling, and some challenges facing this country for waste flow management. A management model is proposed which highlights components that must be considered in the model and the opportunities and challenges to transition from an unbundled handling, which still has practices that lack environmental and technical support, to sustainable management.

This note describes aspects of the diurnal variation and geographical location of the summertime low-level jet over the Gulf of California, based on wind soundings made at two sites near the northern end of the gulf during a two-week summer field program in 1995. The low-level wind observations from Puerto Peñasco, a site along the northern shore of the gulf, showed a strong diurnal cycle decreasing in amplitude to near 0 by the 1800-m altitude. A weaker, but deeper diurnal cycle was observed at Mexicali, an inland site some 200 km west-northwest of Puerto Peñasco. The strongest winds were observed at the coastal site; the observations suggest that the strongest southerly winds in the northern gulf lie closer to the eastern shore of the gulf. Abstract This note describes aspects of the diurnal variation and geographical location of the summertime low-level jet over the Gulf of California, based on wind soundings made at two sites near the northern end of the gulf during a two-week summer field program in 1995. The low-level wind observations from Puerto Peñasco, a site along the northern shore of the gulf, showed a strong diurnal cycle decreasing in amplitude to near 0 by the 1800-m altitude. A weaker, but deeper diurnal cycle was observed at Mexicali, an inland site some 200 km west-northwest of Puerto Peñasco. The strongest winds were observed at the coastal site; the observations suggest that the strongest southerly winds in the northern gulf lie closer to the eastern shore of the gulf.