Gaseous ammonia (NH 3) is the most abundant alkaline gas in the atmosphere. In addition,
it is a major component of total reactive nitrogen. The largest source of NH 3 emissions is …

Ecosystems and the atmosphere: This review describes the state of understanding the
processes involved in the exchange of trace gases and aerosols between the earth's surface …

The Community Multiscale Air Quality (CMAQ) model version 5.3 (CMAQ53), released to the
public in August 2019 and followed by version 5.3. 1 (CMAQ531) in December 2019 …

Rapid development of agriculture and fossil fuel combustion greatly increased US reactive
nitrogen emissions to the atmosphere in the second half of the 20th century, resulting in …

The Meteorological Synthesizing Centre-West (MSC-W) of the European Monitoring and
Evaluation Programme (EMEP) has been performing model calculations in support of the …

FERTILIZERS AND FERTILIZED CROPS Page 1 AMMONIA EMISSION FROM MINERAL
FERTILIZERS AND FERTILIZED CROPS Sven G. Sommer," Jan K. Schjoerring" and OT …

Climate models have evolved into Earth system models with representation of the physics,
chemistry, and biology of terrestrial ecosystems. This companion book to Gordon Bonan's …

Existing descriptions of bi-directional ammonia (NH3) land–atmosphere exchange
incorporate temperature and moisture controls, and are beginning to be used in regional …

Atmospheric nitrogen (N) deposition is a vital component of the global N cycle. Excessive N
deposition on the Earth's surface has adverse impacts on ecosystems and humans …

Recent research on atmospheric ammonia has made good progress in quantifying
sources/sinks and environmental impacts. This paper reviews the achievements and places …