The development of the Methodology Report to refine the inventory guidelines (2006 IPCC Guidelines for National Greenhouse Gas Inventories), was carried out by the Task Force on National Greenhouse Gas Inventories (TFI) in accordance with the decision taken at the 44th Session of IPCC in Bangkok, Thailand, in October 2016. The final draft of this Methodology Report titled “2019 Refinement to the 2...

This handbook is one of three resource products that constitute the CGE Toolbox on Institutional Arrangements, which the CGE developed in accordance with its workplans for 2019–2020. The handbook aims to help experts and practitioners on the ground improve their national institutional arrangements, which are instrumental to implementing the existing MRV arrangements under the Convention and the ET...

IPCC National Greenhouse Gas Inventories Programme and its Technical Support Unit located at IGES in Hayama, Japan, initiated the development of new GHG Inventory Software (“IPCC Inventory Software”). The purpose of this software is to implement Tier1, Tier2 and Tier 3 methodologies in the 2006 IPCC Guidelines for National Greenhouse Gas Inventories for the preparation of national GHG inventories ...

CALPUFF is an advanced non-steady-state meteorological and air quality modeling system. It is maintained and distributed by Lakes Environmental. The model has been listed by the U.S. Environmental Protection Agency (EPA) as an alternative model for assessing long range transport of pollutants and their impacts on Federal Class I areas and for certain near-field applications involving complex meteo...

A steady-state plume model that incorporates air dispersion based on planetary boundary layer turbulence structure and scaling concepts, including treatment of both surface and elevated sources, and both simple and complex terrain....

AERSCREEN is the recommended screening model based on AERMOD. The model will produce estimates of "worst-case" 1-hour concentrations for a single source, without the need for hourly meteorological data, and also includes conversion factors to estimate "worst-case" 3-hour, 8-hour, 24-hour, and annual concentrations. AERSCREEN is intended to produce concentration estimates that are equal to or great...

The source allocation products from CAMS are intended to support authorities to identify the origin of exceedances of air quality limit values. CAMS products may be used for the assessment of the long-range transboundary component of an air pollution episode, in regard to anthropogenic emissions. The daily forecasts products present 4-day model forecasts for the main atmospheric pollutants concent...

CMAQ (see-mak): an active open-source development project of the U.S. EPA that consists of a suite of programs for conducting air quality model simulations. CMAQ combines current knowledge in atmospheric science and air quality modeling, multi-processor computing techniques, and an open-source framework to deliver fast, technically sound estimates of ozone, particulates, toxics and acid deposition...

CAMx is a state-of-the-science photochemical grid model that comprises a “one-atmosphere” treatment of tropospheric air pollution over spatial scales ranging from neighborhoods to continents. It is an open-source system that is computationally efficient, flexible, and available at zero cost. Meteorological inputs are supplied to CAMx from separate weather prediction models (e.g, WRF). Emission inp...

WRF-Chem is the Weather Research and Forecasting (WRF) model coupled with Chemistry. The development of WRF-Chem is a collaborative effort among the community. NOAA/ESRL scientists are the leaders and caretakers of the code....