Revision of deposition and weathering parameters for the ingestion dose module (ECOSYS) of the ARGOS and RODOS decision support systems

The Development and Application of a Quasi-dynamic Food Chain Model in Chinese Agricultural Conditions

“…In ECOSYS-87, the dry deposition on a plant is calculated from the time-integrated air concentration, deposition velocity, and plant leaf area index (LAI) at different growth stages. Andersson et al (2011) studied the deposition velocity variations with the aerosol size distributions and wind speed and demonstrated the uncertainties in the default values in ECOSYS-87. There were also uncertainties in the LAI.…”

“…In recent years, the Real-time Online Decision Support System based on JAVA (JRODOS) has received substantial attention and has undergone continuous improvement, and the ECOSYS-87, a Terrestrial Food Chain and Dose Module (FDMT) of JRODOS, has been applied in many countries (Poon et al 1997; Slavik et al 2001; Hansen et al 2010; Andersson et al 2011). Although ECOSYS-87 has an equilibrium model structure, it incorporates a considerable number of plant-specific, seasonally dependent biological parameters to increase the precision of the results.…”

Parametric improvement for the ingestion dose module of the European ARGOS and RODOS decision support systems

“…A similar effort is urgently needed for the crop deposition model. A literature survey and interpretation has therefore been conducted, which will be reported on in detail in a separate paper [9]. This review showed that the influence of crop species was comparatively small, even though some variation was ICRER 2011 S227 reported by workers who undertook experiments on very different crop types.…”

“…Also wet scavenging coefficients are strongly dependent on the contaminant aerosol size distribution, and this also needs to be taken into account in decision support systems [9].…”

“…A literature review has also been made of the natural weathering processes that govern the decline in crop contamination in the early phase after a contaminating incident. Also this review is presented in detail elsewhere [9]. The weathering processes can have considerable influence on the contaminant concentrations in the first crop harvest after the occurrence of the contamination.…”