Modular weather sensing system and method

A weather sensor, comprising:

• an optical sensor comprising an optical transmitter and an optical receiver disposed within a housing to sense atmospheric visibility;
• a first plate disposed on the housing in front of the optical transmitter and comprising a first aperture;
• a second plate disposed on the housing in front of the optical receiver and comprising a second aperture, wherein the first plate and second plate are arranged such that one of the first and second plates is mounted on the housing above the other one of the first and second plates edgewise in a vertical dimension;
• and
• a three-dimensional corrugated structure disposed between the first and second apertures to reduce or eliminate optical coupling between the optical transmitter and the optical receiver.

An atmospheric visibility sensor, comprising:

• an optical sensor comprising an optical transmitter and an optical receiver disposed within a housing to sense atmospheric visibility;
• a first plate disposed on the housing in front of the optical transmitter and comprising a first aperture;
• a second plate disposed on the housing in front of the optical receiver and comprising a second aperture, wherein the first plate and second plate are arranged such that one of the first and second plates is mounted on the housing above the other one of the first and second plates edgewise in a vertical dimension;
• and
• a three dimensional corrugated structure disposed between the first and second apertures to reduce or eliminate optical coupling between the optical transmitter and the optical receiver;
• wherein the optical transmitter and optical receiver are positioned to create an optical path that couples between the optical transmitter and optical receiver through non-clear atmosphere outside the atmospheric visibility sensor.