Preliminary evaluation of CMAQ modelled wet deposition of sulphur and nitrogen over Bulgaria. (11th April 2019)

• Record Type: Journal Article
• Authors: Georgieva, Emilia; Hristova, Elena; Syrakov, Dimiter; Prodanova, Maria; Batchvarova, Ekaterina
• Is Part Of: International journal of environment and pollution. Volume 64:Number 1/3(2018)
• Page Start: 161
• Page End: 177
• Publication Date: 2019-04-11
• Subjects: CMAQ -- wet deposition -- model validation -- precipitation chemistry data -- precipitation adjustment -- nitrogen -- sulphur -- environmental pollution -- long-range effects; Environmental policy -- Periodicals; Environmental engineering -- Periodicals; Environmental sciences -- Periodicals; Pollution -- Periodicals; 363.73
• Languages: English
• ISSNs: 0957-4352

Abstract

Wet depositions of sulphur and nitrogen over Bulgaria have been simulated by the WRF-CMAQ system for the period from March to June 2016. Precipitation amounts have been overestimated - the average NMB is 44% for the country and 70% for Sofia. Precipitation chemistry data from Sofia have been used for the estimation of observed sulphur and nitrogen depositions - 602 mg m −2, and 528 mg m −2, respectively. Modelled wet depositions show overestimation, more significant for sulphur deposition (NMB 87%). Precipitation adjustment has been applied as post-processing to model wet depositions. The correction led to decrease in NMB for S wet deposition (9%), while N- monthly depositions were in general underestimated. Possible effects of long-range transport for Sofia have been discussed for two selected periods of a few days.