Guidelines & Tools Manual on methods and criteria for harmonized sampling, assessment, monitoring and analysis of the effects of air pollution on forests - Part VI: Phenological observations Published 2023 Share SHARE Facebook share Twitter LinkedIn Copy URL Email Download Download ICP_Manual_part06_2020_Phenology_version_2020-4.pdf en Added on: 20 May, 2025 Breadcrumb Home Resource Library Manual On Methods and Criteria For Harmonized Sampling, Assessment, Monitoring and Analysis of The Effects of Air Pollution On Forests - Part VI: Phenological Observations The ICP Forests Task Force (International Co-Operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests) is a working group under the UNECE/CLRTAP. Its monitoring manual documents the harmonized methods for sampling and analysis as adopted by the participating countries of ICP Forests. Related partners United Nations Economic Commission for Europe (UNECE)