Anemometer have accurate wind data under all conditions, including freezing precipitation. Anemometry is also required in monitoring and controlling the operation of wind turbines, which in cold environments are prone to in-cloud icing. Icing alters the aerodynamics of an anemometer and may entirely block it from operating. Therefore, anemometers used in these applications must be internally heated. Both cup anemometers and sonic anemometers are presently available with heated versions. In order for wind speeds to be comparable from location to location, the effect of the terrain needs to be considered, especially in regard to height. Other considerations are the presence of
Measure S and the quote "I Agree". The other showed a letter written by him on city letterhead, with "I agree" following many pro-Measure S talking points. It was headed "Mayor Garcetti finds a lot to like about Measure S". The mailer implied that Garcetti supported Measure S, which in fact he strongly opposed. He called it a "dirty trick". A CPLA spokesperson said in response that "[t]his was just a friendly reminder on what these City Hall insiders promised and what they've yet to deliver to the voters of Los Angeles." A week before the vote, an editorial in the "Los