Publications

2019
Song, S., M. Gao, W. Xu, Y. Sun, D. R. Worsnop, J. T. Jayne, Y. Zhang, et al.Possible heterogeneous chemistry of hydroxymethanesulfonate (HMS) in northern China winter haze.” Atmospheric Chemistry and Physics 19, no. 2 (2019): 1357–1371. Publisher's Version
Wang, X., D.J. Jacob, S. D. Eastham, M.P. Sulprizio, L. Zhu, Q. Chen, B. Alexander, et al.The role of chlorine in global tropospheric chemistry.” Atmospheric Chemistry and Physics 19, no. 6 (2019): 3981–4003. Publisher's Version
Zhang, Yuzhong, Ritesh Gautam, Daniel Zavala-Araiza, Daniel J. Jacob, Ruixiong Zhang, Lei Zhu, Jian-Xiong Sheng, and Tia Scarpelli. “Satellite-Observed Changes in Mexico's Offshore Gas Flaring Activity Linked to Oil/Gas Regulations.” Geophysical Research Letters 46, no. 3 (2019): 1879-1888. Publisher's VersionAbstract
Abstract Gas flaring is a commonly used practice in the oil and gas sector that leads to key air pollutant and greenhouse gas emissions. Here we use multipollutant (NO2, SO2) satellite observations from 2005 to 2017 to quantify gas flaring activity in Mexico's offshore production cluster, which produces  50–70% of the country's oil and is among the world's largest oil fields. We estimate annual flared gas volume ranging from 5.5 to 20 × 109 m3 over the Mexican offshore corresponding to >40% associated gas production, which is significantly larger than for instance offshore United States where reportedly <3% of associated gas is flared. The 13-year record of satellite-derived gas flaring indicates a drastic increase until 2008 and a decline afterward. While the increased flaring is associated with efforts to enhance oil production, the post-2008 decline is linked to an expanding capacity of associated gas utilization, providing a continuing opportunity to reduce flaring for environmental and economic benefits.
2018
Sun, K., L. Zhu, K. Cady-Pereira, C. Chan Miller, K. Chance, L. Clarisse, P.-F. Coheur, et al.A physics-based approach to oversample multi-satellite, multi-species observations to a common grid.” Atmospheric Measurement Techniques Discussions 2018 (2018): 1–30. Publisher's Version
Kaiser, J., D.J. Jacob, L. Zhu, K. R. Travis, J. A. Fisher, G. González Abad, L. Zhang, et al.High-resolution inversion of OMI formaldehyde columns to quantify isoprene emission on ecosystem-relevant scales: application to the southeast US.” Atmospheric Chemistry and Physics 18, no. 8 (2018): 5483–5497. Publisher's Version
2017
Zhu, Lei, Loretta J. Mickley, Daniel J. Jacob, Eloïse A. Marais, Jianxiong Sheng, Lu Hu, Gonzalo González Abad, and Kelly Chance. “Long-term (2005–2014) trends in formaldehyde (HCHO) columns across North America as seen by the OMI satellite instrument: Evidence of changing emissions of volatile organic compounds.” Geophysical Research Letters 44, no. 13 (2017): 7079–7086. Publisher's Version
Chan Miller, C., D.J. Jacob, E. A. Marais, K. Yu, K. R. Travis, P. S. Kim, J. A. Fisher, et al.Glyoxal yield from isoprene oxidation and relation to formaldehyde: chemical mechanism, constraints from SENEX aircraft observations, and interpretation of OMI satellite data.” Atmospheric Chemistry and Physics 17, no. 14 (2017): 8725–8738. Publisher's Version
Zhu, Lei, Daniel J. Jacob, Frank N. Keutsch, Loretta J. Mickley, Richard Scheffe, Madeleine Strum, Gonzalo González Abad, et al.Formaldehyde (HCHO) As a Hazardous Air Pollutant: Mapping Surface Air Concentrations from Satellite and Inferring Cancer Risks in the United States.” Environmental Science & Technology 51, no. 10 (2017): 5650-5657. Publisher's Version
2016
Travis, K. R., D.J. Jacob, J. A. Fisher, P. S. Kim, E. A. Marais, L. Zhu, K. Yu, et al.Why do models overestimate surface ozone in the Southeast United States?Atmospheric Chemistry and Physics 16, no. 21 (2016): 13561–13577. Publisher's Version
Zhu, L., D.J. Jacob, P. S. Kim, J. A. Fisher, K. Yu, K. R. Travis, L.J. Mickley, et al.Observing atmospheric formaldehyde (HCHO) from space: validation and intercomparison of six retrievals from four satellites (OMI, GOME2A, GOME2B, OMPS) with SEAC⁴RS aircraft observations over the southeast US.” Atmospheric Chemistry and Physics 16, no. 21 (2016): 13477–13490. Publisher's Version
Fisher, J. A., D.J. Jacob, K. R. Travis, P. S. Kim, E. A. Marais, C. Chan Miller, K. Yu, et al.Organic nitrate chemistry and its implications for nitrogen budgets in an isoprene- and monoterpene-rich atmosphere: constraints from aircraft (SEAC4RS) and ground-based (SOAS) observations in the Southeast US.” Atmospheric Chemistry and Physics 16, no. 9 (2016): 5969–5991. Publisher's Version
Yu, K., D.J. Jacob, J. A. Fisher, P. S. Kim, E. A. Marais, C. C. Miller, K. R. Travis, et al.Sensitivity to grid resolution in the ability of a chemical transport model to simulate observed oxidant chemistry under high-isoprene conditions.” Atmospheric Chemistry and Physics 16, no. 7 (2016): 4369–4378. Publisher's Version
Marais, E. A., D.J. Jacob, J. L. Jimenez, P. Campuzano-Jost, D. A. Day, W. Hu, J. Krechmer, et al.Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the southeast United States and co-benefit of SO2 emission controls.” Atmospheric Chemistry and Physics 16, no. 3 (2016): 1603–1618. Publisher's Version
2015
Kim, P. S., D.J. Jacob, J. A. Fisher, K. Travis, K. Yu, L. Zhu, R. M. Yantosca, et al.Sources, seasonality, and trends of southeast US aerosol: an integrated analysis of surface, aircraft, and satellite observations with the GEOS-Chem chemical transport model.” Atmospheric Chemistry and Physics 15, no. 18 (2015): 10411–10433. Publisher's Version
2014
Zhu, Lei, Daniel J Jacob, Loretta J Mickley, Eloïse A Marais, Daniel S Cohan, Yasuko Yoshida, Bryan N Duncan, Gonzalo González Abad, and Kelly V Chance. “Anthropogenic emissions of highly reactive volatile organic compounds in eastern Texas inferred from oversampling of satellite (OMI) measurements of HCHO columns.” Environmental Research Letters 9, no. 11 (2014): 114004. Publisher's VersionAbstract
Satellite observations of formaldehyde (HCHO) columns provide top-down constraints on emissions of highly reactive volatile organic compounds (HRVOCs). This approach has been used previously in the US to estimate isoprene emissions from vegetation, but application to anthropogenic emissions has been stymied by lack of a discernable HCHO signal. Here we show that temporal oversampling of HCHO data from the Ozone Monitoring Instrument (OMI) for 2005–2008 enables detection of urban and industrial plumes in eastern Texas including Houston, Port Arthur, and Dallas/Fort Worth. By spatially integrating the HCHO enhancement in the Houston plume observed by OMI we estimate an anthropogenic HCHO source of 250 ± 140 kmol h −1 . This implies that anthropogenic HRVOC emissions in Houston are 4.8 ± 2.7 times higher than reported by the US Environmental Protection Agency inventory, and is consistent with field studies identifying large ethene and propene emissions from petrochemical industrial sources.
2012
Li, Mengmeng, Xin Huang, Lei Zhu, Jianfeng Li, Yu Song, Xuhui Cai, and Shaodong Xie. “Analysis of the transport pathways and potential sources of \PM10\ in Shanghai based on three methods.” Science of The Total Environment 414 (2012): 525 - 534. Publisher's Version
2011
Huang, Xin, Mengmeng Li, Hans R. Friedli, Yu Song, Di Chang, and Lei Zhu. “Mercury Emissions from Biomass Burning in China.” Environmental Science & Technology 45, no. 21 (2011): 9442-9448. Publisher's Version
Zhu, Lei, Xin Huang, Hui Shi, Xuhui Cai, and Yu Song. “Transport pathways and potential sources of \PM10\ in Beijing.” Atmospheric Environment 45, no. 3 (2011): 594 - 604. Publisher's Version
2010
Song, Yu, Di Chang, Bing Liu, Weijie Miao, Lei Zhu, and Yuanhang Zhang. “A new emission inventory for nonagricultural open fires in Asia from 2000 to 2009.” Environmental Research Letters 5, no. 1 (2010): 014014. Publisher's VersionAbstract
Open fires play a significant role in atmospheric pollution and climatic change. This work aims to develop an emission inventory for nonagricultural open fires in Asia using the newly released MODIS (Moderate Resolution Imaging Spectroradiometer) burned area product (MCD45A1), as the MODIS sensor cannot efficiently detect field crop residue burning. Country-level or province-specific biomass density data were used as fuel loads. Moisture contents were taken into account when calculating combustion factors for grass fuel. During the nine fire years 2000–2008, both burned areas and fire emissions clearly presented spatial and seasonal variations. Extensive nonagricultural open fires were concentrated in the months of February and March, while another peak was between August and October. Indonesia was the most important contributor to fire emission, which was largely attributable to peat burning. Myanmar, India, and Cambodia together contributed approximately half of the total burned area and emission. The annual emissions for CO 2 , CO, CH 4 , NMHC s , NO x , NH 3 , SO 2 , BC, OC, PM 2.5 , and PM 10 were 83 (69–103), 6.1 (4.6–8.2), 0.38 (0.24–0.57), 0.64 (0.36–1.0), 0.085 (0.074–0.10), 0.31 (0.17–0.48), 0.030 (0.024–0.037), 0.023 (0.020–0.028), 0.27 (0.22–0.33), 2.0 (1.6–2.6), and 2.2 (1.7–2.9) Tg yr − 1 , respectively. This inventory has a daily temporal resolution and 500 m spatial resolution, and covers a long period, from April 2000 to February 2009. It could be used in global and regional air quality modeling.
2009
B, Wang, L Zhu, H Gong, R Wang, and S Tao. “Introduction to the methods of parameter estimation for environmental monitoring data set with truncated data below a detection limit.” Acta Science Circumstantiae, 29 (2009): 7. wang_2009.pdf