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Handbook for assessing regional acid deposition exceedances

Description

This technical handbook outlines a methodology for conducting regional/project-based acid deposition assessments using the revised acid deposition management framework [2022], which includes a new ... More ≫

Description

This technical handbook outlines a methodology for conducting regional/project-based acid deposition assessments using the revised acid deposition management framework [2022], which includes a new critical loads function and a steady-state mass balance approach to determine critical loads of acidity for sulphur and nitrogen deposition. The handbook should be utilized to determine suitable acid deposition assessments when required. It has a companion tool and GIS package that can be used to calculate exceedances as per Section 3 of the handbook.

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Using steady-state mass balance model to determine critical loads of acidity for terrestrial ecosystems in Alberta

Description

Benchmarks for atmospheric deposition of acidifying substances for terrestrial ecosystems in Alberta were developed using the steady-state mass balance (SSMB) model. The SSMB model considers both ... More ≫

Description

Benchmarks for atmospheric deposition of acidifying substances for terrestrial ecosystems in Alberta were developed using the steady-state mass balance (SSMB) model. The SSMB model considers both biological response and soil buffering capacity. Alberta soil characteristics, dominant vegetation cover, run off, biomass harvest and grazing, base cation deposition and the impact of wildfires are used to derive these benchmarks or critical loads of acidity for sulphur and nitrogen deposition. This document provides critical load values necessary for acid deposition assessments carried out under the revised 2022 Acid Deposition Management Framework for Alberta. The report outlines the methods used to determine these critical load values and is a companion document to the revised framework.

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The design and assessment of the acid deposition monitoring network in Alberta

Description

This study was undertaken to assess the current acid deposition monitoring network in Alberta, to rank the importance of the current network's nine stations, and to identify the locations of ... More ≫

Description

This study was undertaken to assess the current acid deposition monitoring network in Alberta, to rank the importance of the current network's nine stations, and to identify the locations of future optimal monitoring stations for Alberta.

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Focus on acid deposition

Description

Presents information about acid deposition in Alberta.

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Refinement study of dry deposition inference methods used in Alberta

Description

Reports the results of a study that examined the performance of Alberta Environment’s inference model relative to the Environment Canada model for predicting dry deposition in Alberta and used ... More ≫

Description

Reports the results of a study that examined the performance of Alberta Environment’s inference model relative to the Environment Canada model for predicting dry deposition in Alberta and used this performance comparison to recommend changes for a number of assumptions and boundary conditions in the Alberta inference model to improve its performance.

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Review of the acid deposition management framework and its implementation

Description

This document summarizes conclusions and recommendations arising from the review by the ADAG of the 2004 acid deposition assessment and of the 1999 framework.

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Review and assessment of methods for monitoring and estimating dry deposition in Alberta

Description

Reports the results of a study that examined current approaches used for measuring and estimating dry deposition and identified whether a relatively economical technical approach can be put into ... More ≫

Description

Reports the results of a study that examined current approaches used for measuring and estimating dry deposition and identified whether a relatively economical technical approach can be put into practice for measuring and estimating dry deposition of acidic substances in Alberta.

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Sensitivity of Alberta lakes to acidic deposition

Description

This set of maps illustrates the sensitivity of Alberta lakes to acid deposition, based on alkalinity, total dissolved solids (TDS), calcium, and pH data up to March 2002. The maps are based on ... More ≫

Description

This set of maps illustrates the sensitivity of Alberta lakes to acid deposition, based on alkalinity, total dissolved solids (TDS), calcium, and pH data up to March 2002. The maps are based on earlier versions found in the 1996 report "Sensitivity of Alberta Lakes to Acidifying Deposition: An Update of Sensitivity Maps with Emphasis on 109 Northern Lakes."

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Application of critical, target, and monitoring loads for the evaluation and management of acid deposition

Description

This document presents the framework for managing acidifying emissions and acid deposition in Alberta. The framework is based on the application of critical and target loads. Derivation of this ... More ≫

Description

This document presents the framework for managing acidifying emissions and acid deposition in Alberta. The framework is based on the application of critical and target loads. Derivation of this framework included scientific assessment of acid deposition and effects, and stakeholder consultation to integrate the scientific aspects regarding acid deposition with economic, social and technological considerations.

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Sensitivity of Alberta lakes to acidifying deposition : an update of sensitivity maps with emphasis on 109 northern lakes

Description

This report serves three main purposes. Firstly, it provides a refined representation of the sensitivity of Alberta lakes to acidifying atmospheric deposition. Secondly, it compiles data from a ... More ≫

Description

This report serves three main purposes. Firstly, it provides a refined representation of the sensitivity of Alberta lakes to acidifying atmospheric deposition. Secondly, it compiles data from a number of different surveys of northern lakes; spatial and temporal trends for these potentially sensitive lakes are described. Thirdly, this report documents and evaluates some of the chemical analyses used, providing a foundation for future work.

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