Dr Shalini Punjabi
Phone: 01904 324757
The importance of measuring Volatile Organic Compounds (VOCs) as atmospheric trace gases is well known within the atmospheric research community. VOCs include a wide variety of non-methane hydrocarbons (NMHCs) such as alkanes, alkenes, alkynes, aromatic compounds, and terpenoids (biogenic hydrocarbons with a terpene structure) as well as oxygenated VOCs such as alcohol, aldehyde and ketones. Atmospheric VOCs have an impact on the oxidizing capacity of the atmosphere through their role in the generation of photo-oxidants (e.g. ozone and organic radicals) and are precursor of secondary organic aerosols. Therefore, their accurate and reliable measurement at different platforms in long-term monitoring programmes of Global Atmospheric Watch (GAW) of the World Meteorological Organisation (WMO) has become essential.
My role focuses on analysing and processing gas chromatograms for VOC data from Cape Verde Atmospheric Observatory (CVAO), a global station within WMO-GAW network. Furthermore, I am responsible for remote instrument monitoring, providing technical support, monitoring instrument performance, maintaining long-term and high-quality measurements based on quality assurance/quality control (QA/QC) guidelines developed under the European infrastructure network project ACTRIS (Aerosols, Clouds, and Trace gases Research InfraStructure), submitting high-quality measurements to various national and international atmospheric data repositories and contributing to Cape Verde research projects.
- Discrepancy between simulated and observed ethane and propane levels explained by underestimated fossil emissions. Stig B. Dalsøren, Gunnar Myhre, Øivind Hodnebrog, Cathrine Lund Myhre, Andreas Stohl, Ignacio Pisso, Stefan Schwietzke, Lena Höglund-Isaksson, Detlev Helmig, Stefan Reimann, Stéphane Sauvage, Norbert Schmidbauer, Katie A. Read, Lucy J. Carpenter, Alastair C. Lewis, Shalini Punjabi and Markus Wallasch; Nature Geoscience, 2018, doi:10.1038/s41561-08-0073-0
- Reversal of global atmospheric ethane and propane trends largely due to US oil and natural gas production. Helmig, Detlev; Rossabi, Samuel; Hueber, Jacques; Tans, Pieter; Montzka, Stephen A.; Masarie, Ken; Thoning, Kirk; Plass-Duelmer, Christian; Claude, Anja; Carpenter, Lucy J.; Lewis, Alastair C.; Punjabi, Shalini; Reimann, Stefan; Vollmer, Martin K.; Steinbrecher, Rainer; Hannigan, James W.; Emmons, Louisa K.; Mahieu, Emmanuel; Franco, Bruno; Smale, Dan; Pozzer, Andrea; Nature Geoscience, 9 (7) , 490–495, 2016, doi:10.1038/ngeo2721
- A comparison of very short lived halocarbon (VSLS) and DMS aircraft measurements in the tropical west Pacific from CAST, ATTREX and CONTRAST. Andrews, Stephen J.; Carpenter, Lucy J.; Apel, Eric C.; Atlas, Elliot; Donets, Valeria; Hopkins, James R.; Hornbrook, Rebecca S.; Lewis, Alastair C.; Lidster, Richard T.; Lueb, Richard; Minaeian, Jamie; Navarro, Maria; Punjabi, Shalini; Riemer, Daniel; Schauffler, Sue; Atmospheric Measurement Techniques, 9 (10) , 5213–5225, 2016, doi:10.5194/amt-9-5213-2016
- The impact of monoaromatic hydrocarbons on OH reactivity in the coastal UK boundary layer and free troposphere. Lidster, R. T.; Hamilton, J. F.; Lee, J. D.; Lewis, Alastair C.; Hopkins, James R.; Punjabi, S.; Rickard, A. R.; Young, J. C.; Atmospheric Chemistry And Physics, 14, 2014, doi:10.5194/acp-14-6677-2014
- The influence of biomass burning on the global distribution of selected non-methane organic compounds. Lewis, Alastair C.; Evans, M. J.; Hopkins, J. R.; Punjabi, S.; Read, K. A.; Purvis, R. M.; Andrews, S. J.; Moller, S. J.; Carpenter, L. J.; Lee, J. D.; Rickard, A. R.; Palmer, P. I.; Parrington, M.; Atmospheric Chemistry And Physics, 13 (2) , 2013, doi:10.5194/acp-13-851-2013