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The minimum evaporation across the three studied arid regions studied is less than 0. Seasonal variations in the evaporation rate are much stronger in summer and weaker in winter across much of the Northern Hemisphere. For example, the evaporation rate in China-Mongolia and North Africa is around 0.
However, the evaporation rate in West Asia is stronger in winter, at around 1. West Asia is affected by the Mediterranean climate, with more precipitation in winter and spring, whereas North Africa and China-Mongolia are affected by the monsoon climate, with more precipitation in summer.
Evaporation in arid regions is always the minimum in the North Hemisphere and the seasonal evaporation characteristics yield trends that are similar to the precipitation patterns in arid regions. This highlights that evaporation in arid regions is primarily limited by the lack of water vapour, with the arid regions possessing the minimum evaporation values throughout the year.
Precipitation recycling is a robust component of precipitation formation, particularly in terrestrial precipitation, which has strong regional characteristics Figure 2. External vapour transportation is deficient in arid regions, making precipitation recycling more crucial in precipitation.
Figure 3 shows the precipitation recycling rate, with evaporation calculated via the water mass balance method. This highlights lower precipitation recycling in these arid regions than in other regions, whereas the precipitation from advective water vapour water is more important in these regions.
Note that the precipitation recycling rate exhibits obvious seasonal variations. The high-latitude precipitation recycling rate is more than 0. It then decreases at high latitudes in summer but increases in the tropic and subtropic regions around the equator Figure 3 c.
The high-latitude precipitation recycling rate during autumn and winter increases to 0. The precipitation recycling rate trends yield different seasonal variations between the three arid regions. The precipitation recycling rate in West Asiais stronger in winter and spring but lower in summer.
However, it is stronger in summer and lower in winter in China-Mongolia and North Africa. The seasonal precipitation recycling rate variations are similar to the seasonal evaporation variations in arid regions.
This suggests that the proportion of the local water cycle that contributes to total precipitation depends on a suitable evaporation estimation in arid regions since water vapour sources are scarce. The precipitation recycling rate calculated by Li  shows that the arid regions are not the minimum precipitation recycling ratio centres since they possess much larger values than other regions.
However, the results of Trenberth  and Ent, Savenije  show that the annual precipitation recycling ratio in North Africa, West Asia and China-Mongolia is less than 0.There was growing recognition within Government at the time that challenges emanating from climate change, manifesting in the form of repeated droughts, tropical cyclones, floods, and reduced.
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List three climate/vegetation related things happening in the Sahel. climates range from arid to tropical and they have important agriculture and mineral resources. Description. introduction. stability studies give the shelf life of the drug or the product.
it also outlines the storage condition for the drug substance. hence it is crucial to know the storage conditions. given the different climatic conditions in the world, climatic zones are defined and classified.
No climate can be more dichotomous than the tropical monsoon climates, particularly the striking Okavango Delta in Western Africa. This area is a hot, dry desert for part of the year; wildlife.
The five main latitude regions of the Earth's surface comprise geographical zones, divided by the major circles of latitude. The differences between them relate to climate. They are as follows: The North frigid zone, between the Arctic Circle ° N and the North Pole 90° N.
Covers % of Earth's surface. The results show that the precipitation recycling ratio in North Africa and China-Mongolia is stronger in summer but weaker in winter.
the sinking of tropical Hadley circulation or topography . also worth considering whether there are differences in precipitation recycling calculation using the DRM in different climate zones.