Strategies for Technical Cooperation for Clean Air in Asia- Pacific

This working paper, prepared by the United Nations Economic and Social Commission for Asia and the Pacific (ESCAP) under the Regional Action Programme on Air Pollution (RAPAP), provides a strategic framework for technical cooperation on air quality improvement across the Asia‑Pacific region. It recognizes air pollution as a structural, cross‑sectoral challenge with strong linkages to public health, climate change, economic productivity, and urban sustainability, rather than a purely environmental issue.
Regional context and motivation

The report opens by highlighting the severity of air pollution in Asia‑Pacific: nearly 90% of the region’s population is exposed to air pollution above World Health Organization guideline levels. Rapid urbanization, industrial growth, increasing transport demand, and continued reliance on traditional combustion practices (for cooking, heating, and waste burning) have led to persistently high pollution levels. These challenges are compounded by significant disparities in institutional capacity, financial resources, and technological readiness among countries.

A central theme is the transboundary nature of air pollution, particularly haze, agricultural burning smoke, dust storms, and long‑range transport of pollutants. This makes isolated national approaches insufficient, strengthening the case for coordinated regional cooperation through RAPAP.

Assessment of current air quality management
The report reviews the status of air quality management systems across representative countries from different subregions. Many countries have established:

• Legal and regulatory frameworks

• National air quality standards

• Action plans and monitoring networks

However, the analysis identifies critical gaps:

• Weak implementation capacity

• Incomplete or absent emissions inventories

• Limited continuous emissions monitoring systems (CEMS)

• Underdeveloped forecasting and early warning systems

• Insufficient data integration and utilization

Across subregions, the transport, residential combustion, and open burning sectors consistently emerge as dominant emission sources.
 

Technology demand and cooperation needs
A major contribution of the report is its technology demand assessment, based on surveys with policymakers from 14 countries across South Asia, South‑East Asia, and North & Central Asia. Countries expressed interest in two overlapping but distinct technology tracks:

1) Management and system‑strengthening technologies, such as:

• Air quality monitoring networks

• Satellite‑based observation

• Modelling and forecasting tools

• IoT‑enabled data platforms

2) Direct emission‑reduction technologies, especially those with visible short‑term mitigation impacts, such as:

• Diesel Particulate Filters (DPFs)

• Cleaner fuels and fuel quality improvements

• Clean cooking technologies

This reveals a dual demand: countries want immediate emission reductions, but also recognize the need for long‑term institutional and data system strengthening.
 

Review of innovative technologies
The report provides a structured assessment of 16 innovative technologies, grouped by sector:

• Monitoring and management: low‑cost sensors, IoT systems, satellite monitoring (MODIS, VIIRS, GEMS), WRF‑Chem modelling, CEMS

• Transport: DPFs, Low Emission Zones (LEZs), fuel quality improvements, Euro 6 standards

• Residential: cleaner cooking fuels and stoves

• Industry and power: electrostatic precipitators, ultra‑low penetration air filters, zig‑zag kilns, waste‑to‑energy systems

Each technology is assessed against economic feasibility, implementation challenges, and emission‑reduction potential, highlighting that technology effectiveness depends heavily on enabling policies, maintenance capacity, and financing mechanisms.
 

Priority cooperation areas under RAPAP
Based on surveys, feasibility analysis, and stakeholder consultations, the report identifies three priority areas for technical cooperation:

1. Transport‑sector emission reduction using Diesel Particulate Filters (DPFs)

2. Low‑Cost Sensors (LCS) combined with IoT‑based emission management systems

3. Satellite‑based air quality monitoring and forecasting

These priorities are designed to balance direct mitigation impacts and long‑term system strengthening.
 

Implementation framework and way forward
The report stresses that technology alone is insufficient. Sustainable improvements require:

• Robust legal and institutional frameworks

• Integrated data governance systems

• Long‑term capacity building

• Stable financing arrangements

• Clear pathways for institutionalization and scale‑up

It proposes a step‑by‑step implementation framework, from country nomination and pilot design to monitoring, reporting, and regional knowledge sharing. RAPAP is positioned as a platform for best‑practice exchange, multilateral cooperation, and coordinated regional action, particularly for addressing transboundary air pollution.
In conclusion, the report frames clean air cooperation as a strategic regional development issue, emphasizing dual‑track action: immediate emission reductions coupled with gradual strengthening of national and regional air quality management systems.

Highlighted key words
Air pollution, Regional Action Programme on Air Pollution (RAPAP), Asia‑Pacific, technical cooperation, air quality management, low‑cost sensors, satellite monitoring, IoT, Diesel Particulate Filters (DPF), transport emissions, residential combustion, open burning, transboundary pollution, forecasting, early warning, capacity building, best practices exchange, policy coordination, institutional strengthening.