Imagine walking outside and the sky has been pouring non‑stop since long before your grandparents, long before humans, long before even dinosaurs. Not days, not months, not years, but roughly about two million years of almost relentless rain. It sounds like a dramatic sci‑fi disaster or a myth from some lost civilization, but geology quietly suggests something very close to this really happened to our planet, and astonishingly, life not only survived it but used it as a turning point……Continue reading….
By: Sameen David
Source: Dino World
.
Critics:
Rainbands are cloud and precipitation areas which are significantly elongated. Rainbands can be stratiform or convective, and are generated by differences in temperature. When noted on weather radar imagery, this precipitation elongation is referred to as banded structure. Rainbands in advance of warm occluded fronts and warm fronts are associated with weak upward motion, and tend to be wide and stratiform in nature.
Rainbands spawned near and ahead of cold fronts can be squall lines which are able to produce tornadoes. Rainbands associated with cold fronts can be warped by mountain barriers perpendicular to the front’s orientation due to the formation of a low-level barrier jet. Bands of thunderstorms can form with sea breeze and land breeze boundaries if enough moisture is present. If sea breeze rainbands become active enough just ahead of a cold front, they can mask the location of the cold front itself.
The wet, or rainy, season is the time of year, covering one or more months, when most of the average annual rainfall in a region falls. The term green season is also sometimes used as a euphemism by tourist authorities. Areas with wet seasons are dispersed across portions of the tropics and subtropics. Savanna climates and areas with monsoon regimes have wet summers and dry winters.
Tropical rainforests technically do not have dry or wet seasons, since their rainfall is equally distributed through the year. Some areas with pronounced rainy seasons will see a break in rainfall mid-season when the Intertropical Convergence Zone or monsoon trough move poleward of their location during the middle of the warm season. When the wet season occurs during the warm season, or summer, rain falls mainly during the late afternoon and early evening hours. The wet season is a time when both air quality and freshwater quality improves.
Tropical cyclones, a source of very heavy rainfall, consist of large air masses several hundred miles across with low pressure at the centre and with winds blowing inward towards the centre in either a clockwise direction (southern hemisphere) or counterclockwise (northern hemisphere). Although cyclones can take an enormous toll in lives and personal property, they may be important factors in the precipitation regimes of places they impact, as they may bring much-needed precipitation to otherwise dry regions. Areas in their path can receive a year’s worth of rainfall from a tropical cyclone passage.
Rain rate is measured in units of length per unit time, typically in millimeters per hour, or in countries where imperial units are more common, inches per hour. The “length”, or more accurately, “depth” being measured is the depth of rain water that would accumulate on a flat, horizontal and impermeable surface during a given amount of time, typically an hour. This is dimensionally equivalent to volume of water per unit area: one millimeter of rainfall is the equivalent of one liter of water per square meter.
This measurement is done with a gauge. A cylindrical can with straight sides is the most inexpensive and simple used that can be made and left out in the open, but its accuracy will depend on what ruler is used to measure the rain with.Meteorologists have a standard type of gauge for both rainfall or snowfall with an inner cylinder and an outer cylinder that adds to the volume of the full inner cylinder.
Other types of gauges include the popular wedge gauge (the cheapest rain gauge and most fragile), the tipping bucket rain gauge, and the weighing rain gauge. When a precipitation measurement is made, various networks exist across the United States and elsewhere where rainfall measurements can be submitted through the Internet, such as CoCoRAHS or GLOBE. If a network is not available in the area where one lives, the nearest local weather or met office will likely be interested in the measurement.
ContinuousRain ,RainyDays ,WeatherUpdate ,RainyWeather ,NatureLovers ,StormySkies ,Rainfall ,WetWeather ,GetOutside ,MoodyWeather #RainySeason ,PuddleJumping ,SustainableRain ,CozyVibes ,RainyMood ,Downpour ,UmbrellaReady ,HydrationStation ,NaturePhotography , Geology, NonStopRainPouring
Leave a Reply