Over the contiguous United States, total annual precipitation increased at an average rate of 6.1% per century since 1900, with the greatest increases within the East North Central climate region (11.6% per century) and the South (11.1%).

A Precipitation may occur on other celestial bodies, e.g.

There has been an increase in the number of heavy precipitation events over many areas during the past century, as well as an increase since the 1970s in the prevalence of droughts—especially in the tropics and subtropics. Given the Earth's surface area, that means the globally averaged annual precipitation is 990 millimetres (39 in). There are other processes, not necessarily thermodynamic, that can increase updraft strength. Distribution d'Ulbricht. These include Like other precipitation in cumulonimbus clouds hail begins as water droplets. However, most precipitation data sets in current use do not employ these data sources.The IR estimates have rather low skill at short time and space scales, but are available very frequently (15 minutes or more often) from satellites in Since the late 1990s, several algorithms have been developed to combine precipitation data from multiple satellites' sensors, seeking to emphasize the strengths and minimize the weaknesses of the individual input data sets. This determines the varying thicknesses of the layers of the hailstone. Parallèlement on distingue 4 types de typologie : - précipitations liquides : pluie, bruine, crachin, ondée, averse, grain, orage, cataracte, déluge, trombe, serein - … The only case in which we can discuss multiple trajectories is in a multicellular thunderstorm where the hailstone may be ejected from the top of the "mother" cell and captured in the updraft of a more intense "daughter cell". Formations due to condensation, such as clouds, Although surface precipitation gauges are considered the standard for measuring precipitation, there are many areas in which their use is not feasible.

While a regular rain pattern is usually vital to healthy plants, too much or too little rainfall can be harmful, even devastating to crops. Despite the fact that there might be a layer in the atmosphere that has positive values of CAPE, if the parcel does not reach or begin rising to that level, the most significant convection that occurs in the FCL will not be realized. All plants need at least some water to survive, therefore rain (being the most effective means of watering) is important to agriculture. La distribution de Marshall et Palmer utilise une fonction exponentielle qui tient difficilement compte des gouttes de très petits diamètres (la courbe sur la … This includes the vast expanses of ocean and remote land areas. As a result, the modern global record of precipitation largely depends on satellite observations.Satellite sensors work by remotely sensing precipitation—recording various parts of the Satellite sensors now in practical use for precipitation fall into two categories. In some cases the long-term homogeneity of the dataset is emphasized, which is the In other cases, the goal is producing the best instantaneous satellite estimate, which is the High Resolution Precipitation Product approach.

This means that generally the larger hailstones will form some distance from the stronger updraft where they can pass more time growingThe hailstone will keep rising in the thunderstorm until its mass can no longer be supported by the updraft. This may take at least 30 minutes based on the force of the updrafts in the hail-producing thunderstorm, whose top is usually greater than 10 kilometres (6.2 mi) high. Any particulates of liquid or solid water in the atmosphere are known as hydrometeors.