News and Events

The Small Mobile Ozone lidar (SMOL) instruments, a new compact, and affordable (<$100k) class of ozone differential absorption lidars. The SMOL systems provide high-resolution tropospheric ozone profiles between near the surface and 7-8 km above the surface at a low cost, becoming an important new measurement capability for air quality studies and for the validation of the NASA TEMPO ozone products.

The Steering Committee of the Network for the Detection of Atmospheric Composition Change (NDACC) convened its annual meeting from November 11–15, 2024, at the University of Santiago in Chile.

A harmonized NDACC-IRWG FTIR HCFC-22 retrieval strategy was developed & implemented that provides a new global long-term HCFC-22 data set. The measurements quantify a decrease in the growth rate of the atmospheric HCFC-22 column since 2009.

The EVDC Orbit Tool, available via ESA’s atmospheric Validation Data Centre (EVDC), is a new and user-friendly platform designed to help researchers visualize satellite orbits and combine them with detailed Earth observation and in-situ data.

International ozonesonde expert panel holds regional webinars disseminating ozonesonde data collection and processing best practices.

The third Cabauw INtercomparison of UV-Vis DOAS Instruments, CINDI-3, took place from 21 May to 24 June 2024 at the Cabauw Experimental Site for Atmospheric Research (CESAR).

NDACC and ACTRIS signed a Memorandum of Understanding (MOU) on June 6, 2024 to collaborate and mutually exchange relevant expertise, to share data and research, and to promote both NDACC and ACTRIS communities to continue working closely together.

Following two years of equipment procurement and a visit earlier this month from Fernando Chouza (JPL) to help with receiver integration, Lauder finally have a redeveloped ozone lidar that is ready to return to routine operations. The original ozone lidar was installed at Lauder, New Zealand, in the early 1990s...

In November 2023, the solar FTIR instrument at Anhui Institute of Optics and Fine Mechanics (AIOFM) in Hefei, China was accepted as a formal NDACC station. The Infrared Working Group (IRWG) is composed of 22 active stations making daily observations and producing vertical profiles of 12 standard species.

The global COVID-19 pandemic and its associated restrictions on human activity presented a unique opportunity to study changes in atmospheric composition. The analysis of the impact of stay-at-home measures on air quality has primarily relied on surface in-situ measurements and satellite platforms.