Global inventory of continental hydrogen chloride and particulate chloride emissions
We developed an emission inventory for hydrogen chloride (HCl) and particulate Cl (pCl) from continental sources (GT-Chlorine). This emission inventory contains six source sectors including the energy sector, industrial sector, residential sector, open waste burning, open biomass burning and agricultural sector. The files contain monthly-averaged emission flux of HCl and pCl with the unit of kg m-2 s-1 from each sector. The emissions are gridded at a spatial resolution of 0.1° × 0.1° for the years 1960 to 2014. These data are HEMCO-ready and can be used in Geos-Chem directly. See the related publication and dataset below for more details.
Citation:
Zhang, B., Shen, H., Yun, X., Zhong, Q., Henderson, B. H., Wang, X., Shi, L., Gunthe, S. S., Huey, L. G., Tao, S., Russell, A. G., Liu, P*., Global Emissions of Hydrogen Chloride and Particulate Chloride from Continental Sources. Environmental Science & Technology, 56, (7), 3894-3904, 10.1021/acs.est.1c05634, 2022.
Zhang, B., Liu, P*., Shen, H., Yun, X., Zhong, Q., Henderson, B. H., & Tao, S. (2022). Global Emissions of Hydrogen Chloride and Particulate Chloride from Continental Sources (GT-Chlorine) Version V1) Harvard Dataverse. https://doi.org/doi:10.7910/DVN/23BRII
Complex refractive indices of SOA
Dr. Liu developed a method to measure the spectroscopic complex refraction indices (m = n + ik) for thin films of secondary organic aerosol (SOA) material using ellipsometry and UV-VIS spectrophotometry. This method has been applied to measure the optical constants of SOA derived from ozonolysis of alpha-pinene, limonene, and catechol [Liu et al., ES&T 2013] and photooxidation of toluene and m-xylene [Liu et al., ACP 2015]. This method was also applied to two pure compounds (squalane and nigrosin) for method validation purpose. The datasets cover the wavelengths ranged from 220 nm to ~1000 nm.
These datasets have been included in the new version of high-resolution transmission molecular absorption (HITRAN2020) database (https://hitran.org/; see Gordon et al., 2022). These datasets were also used in many aerosol studies, such as a recent publication in Science [Corral Arroyo et al., Science 2022].
Tabulated datasets can be found in the link below:
https://github.com/pengfeiliu371/OA_refractive_index/
Citations:
Liu, P., Zhang, Y., and Martin, S. T.: Complex refractive indices of thin films of secondary organic materials by spectroscopic ellipsometry from 220 to 1200 nm, Environ. Sci. Technol., 47, 13594-13601, 2013.
Liu, P., Abdelmalki, N., Hung, H. M., Wang, Y., Brune, W. H., and Martin, S. T.: Ultraviolet and visible complex refractive indices of secondary organic material produced by photooxidation of the aromatic compounds toluene and m-xylene, Atmos. Chem. Phys., 15, 1435-1446, 2015.
Water diffusivity in SOA material
We measured water desorption kinetics of SOA thin films using a Quartz Crystal Microbalance (QCM), and retrieved water diffusivity in SOA material using a concentration-dependent multi-layer diffusion model [Liu et al., ACS Cent. Sci. 2018]. This method was validated using amorphous sucrose, and the results were consistent with literature. Tabulated data for sucrose and SOA materials derived from alpha-pinene, toluene, and m-xylene can be found in the link below:
https://github.com/pengfeiliu371/Liu_ACSCentSci_2018
Citation:
Liu, P., Li, Y. J., Wang, Y., Bateman, A. P., Zhang, Y., Gong, Z. H., Bertram, A. K., Martin, S. T.: Highly viscous states affect the browning of atmospheric organic particulate matter, ACS Central Science, 4(2), 207–215, 2018.
