Bremen 2017 – scientific programme
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UP: Fachverband Umweltphysik
UP 10: Atmosphäre - Spurengase (Fortsetzung)
UP 10.2: Talk
Thursday, March 16, 2017, 09:00–09:15, GW2 B3009
Measurements of the tropospheric column of Ammonia (NH3) above Ispra, Italy. — •Mathias Palm1, Justus Notholt1, and Niels Jensen2 — 1Universität Bremen — 2JRC Ispra
Ammonia (NH3) is one of the central compounds in the nitrogen in the soil-atmosphere system. It is a highly reactive molecule and difficult to measure because of it properties. Ammonia plays a central part in the development of smog via its reaction with nitric acid (HNO3) to form ammonium nitrate (NH4NO3).
During a measurement campaign the tropospheric column of Ammonia (NH3) has been measured in solar absorption mode in Ispra, Italy from Spring to Autumn 2016 using a mobile FTIR system. Ispra is located adjacent to the Po valley, a agricultural center in Italy and one of the hot spots for Ammonia in Western Europe. Due to its location it can get air either from the Po-valley, air which travelled over the Alps or air originating on the Mediterranian. This location makes it a valuable place for measurements and a demanding place for model validation.
In this presentation, results from the measurement campaign and first comparisons with the LOTOS-Euro model will be presented. The flexpart model is used to calculate footprints, i.e. source regions for the measured ammonia.