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عمران::
اقلیمی، اقلیمی
The climatological value for each day of the year was computed from linear interpolation between adjacent monthly climatological means.
where j is the dry spell day, n is the number of dry spell events, i a single event with a valid LST observation, LSTc and Tc are the climatological LST and Ta, and w is the number of 0.01° observations used to construct the 0.5° LST.
Furthermore, the varia- tion of RWR with antecedent rainfall provides information on which evaporation regime a particular region lies in climatologically.
One has to keep in mind though that these are climatological values that reflect the effect of soil moisture declines happening over time scales of months (and not day-to- day variations).
This indicates that the soil moisture impact on evaporative fraction is rather insensitive to the soil moisture layer used [at least for mean climatological conditions; for very dry conditions Hirschi et al،Typically use is made of mean (climatological)
Typically values are derived on a pixel-by-pixel basis, with static estimates based on physical limitations such as range, ground clutter, and beam height, or long- term (climatological) observations.
(2010) pro- posed three levels of complexity relying on: reflectivity and some global qual- ity factors (level 1); incorporating 'climatological' data such as frequency of detection or clutter maps (level 2); and using additional dynamic information such as the height of the freezing level from Numerical Weather Prediction models (level 3).
In practice, persistence-based, statistical and climatological techniques are also widely used (e.g.
Often these are based on the types of climatological studies described earlier in Sect. 4.2, where the aim is typically to develop scientifically-based tools to assist with issuing warnings (e.g.
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