Abstract
Similar quasiperiodic year-to-year variations of dust dry deposition (DDD) with a two–three-year period were found over Israel and north-east Africa. This phenomenon of quasiperiodic interannual variations of DDD has not been discussed in previous publications. Moreover, similar seasonal variations of DDD were found over both Israel and north-east Africa, characterized by significant dust deposition in spring and a decrease in DDD from spring to autumn. These findings indicate the existence of the same causal factors for interannual and seasonal variations of DDD over the two regions, such as similar surface winds created by Mediterranean cyclones. Daily runs of the Dust REgional Atmospheric Model (DREAM) at Tel Aviv University from 2006 to 2019 were used to investigate the main features of the spatio-temporal distribution of dust dry deposition in the eastern Mediterranean, with a focus on Israel. DREAM showed that, on average, during the 14-year study period, in the winter, spring, and summer months, the spatial distribution of monthly-accumulated DDD over Israel was non-uniform with the maximum of DDD over southern Israel. In the autumn months, DREAM showed an increase in DDD over northern Israel, resulting in an almost uniform DDD pattern. The knowledge of DDD spatio-temporal distribution is helpful for understanding the negative effects of DDD on the performance of solar panels and on insulator flashover in the Israel power electric network.
Highlights
Satellite and ground-based measurements show that the eastern Mediterranean is a crossroad for various species of air pollution [1]
We3.investigated specific features of spatio-temporal distribution of monthly-accumulated, seasonally-accumulated, and annually-accumulated dust drydistribution depositionofover the region under study, We investigated specific features of spatio-temporal monthly-accumulated, seasonally-accumulated, and annually-accumulated dust dry over the region under based on daily runs of the Dust Regional Atmospheric Model (DREAM)
We found that the above mentioned similar seasonal variations of dust dry deposition (DDD) were associated with similar seasonal variations of 14-year mean surface wind speed
Summary
Satellite and ground-based measurements show that the eastern Mediterranean is a crossroad for various species of air pollution [1]. Ammonia, and organic [8] They found significant dry is and known the specific spatio-temporal distributiondust of dust deposition over(DDD). Dust forecasts by dry the dry deposition overDesert, Israel and surrounding areas. This annually-, seasonally-, and monthly-accumulated dust dry deposition over the study region, provides us with the opportunity to estimate spatio-temporal distribution of dust dry deposition over including andOur surrounding areas Monthly-accumulated deposition over the study region, including Israel and surrounding knowledge will advance the general understanding of the above-mentioned areasThis. We investigated long-term trends in dust dry depositiondust-related during the problems in the south-eastern. This knowledge will advance the general understanding of the above-mentioned dust-related problems in Methodology the south-eastern Mediterranean and in Israel in particular. Runs of the TAU aerosol prediction system from 2006 to 2019 provide us with
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