What does "CIG" indicate in weather remarks?

The term "CIG" in weather remarks is an abbreviation for "ceiling," which refers to the height of the lowest layer of clouds above the ground. Ceiling is an important factor in aviation and meteorology because it determines the vertical limits of cloud cover, which can impact visibility and aircraft operations. Knowing the ceiling helps pilots understand the conditions they may encounter during takeoff, landing, and throughout flight. It provides vital information for maintaining safe operations, especially in low-visibility scenarios or during inclement weather. Other options, while related to weather, do not accurately describe what "CIG" stands for in this context.