ER stands for Extended Range These aircraft types that is identified by 'ER' are aircraft models that is enhanced for better efficiency at long range flights than its counterpart aircraft of the same model. Source(s): Aerospace Engineer - Aviation Enthusiast
Actually Dusty.... The leeward side extends all the way to Koko Head (encompasssing Pearl Harbor, Honolulu to Hawaii Kai). By definition. Windward is the side of an island where the predominant wind travels from the sea onto the island. Leeward is the side of an island where the predominant wind travels from the interior of the island to the sea. In practice on Oahu.
That's because a shadow is just the sunlight being blocked by your body. A rain shadow works in the same way: it's where moist air gets blocked by mountains. A rain shadow is a dry area on the side of a mountain opposite to the wind. We call this dry side of the mountain the leeward side. If wind is approaching from the west, the rain shadow is on the east. If the wind is approaching from the east, the rain shadow is on the west. Whichever side the wind is approaching from is called the windward side. Windward is the opposite of leeward.