Article published on Urban Climate: A wide-ranging investigation of the COVID-19 lockdown effects on the atmospheric composition in various Italian urban sites (AER– LOCUS)

Abstract: A widE-Ranging investigation of the first COVID-19 LOCkdown effects on the atmospheric composition in five Italian Urban Sites (AER–LOCUS) has been carried out and is presented in this study. The analysis uses particle and gas concentrations from surface in situ sampling, column aerosol and gas properties from photometer/spectrometers, and satellite NO2 determinations at five sites distributed over the whole Italian territory: Aosta, Milan, Bologna, Rome, and Taranto. These data are related to meteorological conditions to identify the numerous...

Sorbetto summer school

The 2nd International summer school SORBETTO, SOlar Radiation Based Established Techniques for aTmospheric Observations" is announced. The main topics are listed above. - Ground based instruments: Radiation theory, Photometry and networks, Spectrometry and networks and Metrology applied to solar radiometry -Satellite: Overview of Satellite Remote sensing, Overview on Satellite ESA missions and Cal/Val activities The school will be held on line from 13 to 15 September 2021, and it is open to researchers, PhD students and workers involved in this type of atmospheric...

A solitary wave at APL site

Solitary waves are a form of internal gravity wave that derives from the balance between the effect of dispersion and non-linearities. They appear in the observation as a pulse in the vertical velocity moving horizontally without significant amplitude decrease. The wave sources (e.g., interaction of the flow with orographic barriers or fronts) may be at large distance from the observation point. A classical weakly non-linear theory (Rottman and Einaudi, 1993) is used for retrieving the characteristics of solitary waves propagating...

Pigeon-borne bio loggers for air quality monitoring (SBAM): a pigeon release

Release of a homing pigeon for the continuous high-temporal resolution monitoring of CO2, atmospheric pressure, temperature, and humidity in the Rome area. The miniaturized sensors, equipped with GPS, are developed in collaboration with Sapienza University of Rome, Ornis italica and TechnoSmart Europe. Homing pigeons are released close to the urban site of BAQUNIN. On their homing routes, birds fly just above buildings, urban parks, heavily trafficked roads, and agricultural areas mostly within 50 meters of height above ground, accurately characterizing the...

Article published on Urban Climate: On the effect of sea breeze regime on aerosols and gases properties in the urban area of Rome, Italy

Abstract: Several ground-based remote sensing and in-situ instruments were used to investigate the development of the sea-breeze front and its effect on both the optical and physical aerosol properties, the Particulate Matter (PM) content and the tropospheric and near-surface NO2 concentrations. Most of the instruments belongs to the Boundary-layer Air Quality-analysis Using Network of Instruments (BAQUNIN) supersite, in the urban area of Rome (Italy). Two characteristic sea-breeze patterns were identified: the front days, in which the sea-breeze front develops...

A new instrument for BAQUNIN suite: RAP

Starting from January, a new instrument has joined the BAQUNIN instrumental suite, the Raymetrics’ Aerosol Profiler (RAP) developed elastic backscatter mini-LiDAR. The system is suitable for the detection of clouds, tropospheric aerosol layers (i.e desert dust, biomass burning plumes), and for the study of PBL daily evolution.  It delivers atmospheric backscatter aerosol profiles in the NIR with high raw spatial and temporal resolution 3.75 m and <20 sec, respectively. The effective range extends from full overlap (<200 m) up...

Article published on Atmospheric Pollution Research: Impact of synoptic meteorological conditions on air quality in three different case studies in Rome, Italy

This study analyses the influence of synoptic weather conditions on atmospheric particulate matter concentration and composition during an intensive measurement campaign, performed in the urban area of Rome (Italy) in winter 2017. To evaluate the effect of local particulate sources, data from several urban and rural ground-based air quality stations were considered. The analysis involved the following atmospheric parameters: wind speed and direction near the ground, air temperature, specific humidity, height and evolution of the mixing layer. Furthermore, the...