Search Results - "Laughner, Joshua L"

Evaluation of version 3.0B of the BEHR OMI NO2 product by Laughner, Joshua L, Zhu, Qindan, Cohen, Ronald C

“…Version 3.0B of the Berkeley High Resolution (BEHR) Ozone Monitoring Instrument (OMI) NO2 product is designed to accurately retrieve daily variation in the…”
Get full text

A new algorithm to generate a priori trace gas profiles for the GGG2020 retrieval algorithm by Laughner, Joshua L, Roche, Sébastien, Kiel, Matthäus, Toon, Geoffrey C, Wunch, Debra, Baier, Bianca C, Biraud, Sébastien, Chen, Huilin, Kivi, Rigel, Laemmel, Thomas, McKain, Kathryn, Quéhé, Pierre-Yves, Rousogenous, Constantina, Stephens, Britton B, Walker, Kaley, Wennberg, Paul O

“…Optimal estimation retrievals of trace gas total columns require prior vertical profiles of the gases retrieved to drive the forward model and ensure the…”
Get full text

Improved Satellite Retrieval of Tropospheric NO2 Column Density via Updating of Air Mass Factor (AMF): Case Study of Southern China by Mak, Hugo, Laughner, Joshua, Fung, Jimmy, Zhu, Qindan, Cohen, Ronald

“…Improving air quality and reducing human exposure to unhealthy levels of airborne chemicals are important global missions, particularly in China. Satellite…”
Get full text

Combining Machine Learning and Satellite Observations to Predict Spatial and Temporal Variation of near Surface OH in North American Cities by Zhu, Qindan, Laughner, Joshua L., Cohen, Ronald C.

“…The hydroxyl radical (OH) is the primary cleansing agent in the atmosphere. The abundance of OH in cities initiates the removal of local pollutants; therefore,…”
Get full text

Estimate of OH trends over one decade in North American cities by Zhu, Qindan, Laughner, Joshua L, Cohen, Ronald C

“…The hydroxyl radical (OH) is the most important oxidant on global and local scales in the troposphere. Urban OH controls the removal rate of primary pollutants…”
Get full text

OCO-3 early mission operations and initial (vEarly) XCO2 and SIF retrievals by Taylor, Thomas E., Eldering, Annmarie, Merrelli, Aronne, Kiel, Matthäus, Somkuti, Peter, Cheng, Cecilia, Rosenberg, Robert, Fisher, Brendan, Crisp, David, Basilio, Ralph, Bennett, Matthew, Cervantes, Daniel, Chang, Albert, Dang, Lan, Frankenberg, Christian, Haemmerle, Vance R., Keller, Graziela R., Kurosu, Thomas, Laughner, Joshua L., Lee, Richard, Marchetti, Yuliya, Nelson, Robert R., O'Dell, Christopher W., Osterman, Gregory, Pavlick, Ryan, Roehl, Coleen, Schneider, Robert, Spiers, Gary, To, Cathy, Wells, Christopher, Wennberg, Paul O., Yelamanchili, Amruta, Yu, Shanshan

“…NASA's Orbiting Carbon Observatory-3 (OCO-3) was installed on the International Space Station (ISS) on 10 May 2019. OCO-3 combines the flight spare…”
Get full text

Why Do Models Overestimate Surface Ozone in the Southeast United States? by Travis, Katherine R., Jacob, Daniel J., Fisher, Jenny A., Kim, Patrick S., Marais, Eloise A., Zhu, Lei, Yu, Karen, Miller, Christopher C., Yantosca, Robert M., Sulprizio, Melissa P., Thompson, Anne M., Wennberg, Paul O., Crounse, John D., Clair, Jason M. St, Cohen, Ronald C., Laughner, Joshua L., Dibb, Jack E., Hall, Samuel R., Ullmann, Kirk, Wolfe, Glenn M., Pollack, Illana B., Peischl, Jeff, Neuman, Jonathan A., Zhou, and Xianliang

“…Ozone pollution in the Southeast US involves complex chemistry driven by emissions of anthropogenic nitrogen oxide radicals (NO(x) triple bond NO + NO2) and…”
Get full text

Direct observation of changing NO x lifetime in North American cities by Laughner, Joshua L, Cohen, Ronald C

“…NO lifetime relates nonlinearly to its own concentration; therefore, by observing how NO lifetime changes with changes in its concentration, inferences can be…”
Get full text

Lightning NO2 simulation over the contiguous US and its effects on satellite NO2 retrievals by Zhu, Qindan, Laughner, Joshua L, Cohen, Ronald C

“…Lightning is an important NOx source representing ∼10 % of the global source of odd N and a much larger percentage in the upper troposphere. The poor…”
Get full text

Using satellite observations of tropospheric NO2 columns to infer long-term trends in US NOx emissions: the importance of accounting for the free tropospheric NO2 background by Silvern, Rachel F, Jacob, Daniel J, Mickley, Loretta J, Sulprizio, Melissa P, Travis, Katherine R, Marais, Eloise A, Cohen, Ronald C, Laughner, Joshua L, Choi, Sungyeon, Joiner, Joanna, Lamsal, Lok N

“…The National Emission Inventory (NEI) of the US Environmental Protection Agency (EPA) reports a steady decrease in US NOx emissions over the 2005–2017 period…”
Get full text

Effects of daily meteorology on the interpretation of space-based remote sensing of NO2 by Laughner, Joshua L, Zare, Azimeh, Cohen, Ronald C

“…Retrievals of tropospheric NO2 columns from UV-visible observations of reflected sunlight require a priori vertical profiles to account for the variation in…”
Get full text

Estimating enhancement ratios of nitrogen dioxide, carbon monoxide and carbon dioxide using satellite observations by MacDonald, Cameron G, Mastrogiacomo, Jon-Paul, Laughner, Joshua L, Hedelius, Jacob K, Nassar, Ray, Wunch, Debra

“…Using co-located space-based measurements of carbon dioxide (CO2) from the Orbiting Carbon Observatory-2 and Orbiting Carbon Observatory-3 (OCO-2/3) and carbon…”
Get full text

Quantification of the effect of modeled lightning NO2 on UV–visible air mass factors by Laughner, Joshua L, Cohen, Ronald C

“…Space-borne measurements of tropospheric nitrogen dioxide (NO2) columns are up to 10x more sensitive to upper tropospheric (UT) NO2 than near-surface NO2 over…”
Get full text

A simplified non-linear chemistry transport model for analyzing NO2 column observations: STILT–NOx by Wu, Dien, Laughner, Joshua L, Liu, Junjie, Palmer, Paul I, Lin, John C, Wennberg, Paul O

“…Satellites monitoring air pollutants (e.g., nitrogen oxides; NOx = NO + NO2) or greenhouse gases (GHGs) are widely utilized to understand the spatiotemporal…”
Get full text

Retrieval of atmospheric CO2 vertical profiles from ground-based near-infrared spectra by Roche, Sébastien, Strong, Kimberly, Wunch, Debra, Mendonca, Joseph, Sweeney, Colm, Baier, Bianca, Biraud, Sébastien C, Laughner, Joshua L, Toon, Geoffrey C, Connor, Brian J

“…We evaluate vertical profile retrievals of CO2 from 0.02 cm-1 resolution ground-based near-infrared solar absorption spectra with the GFIT2 algorithm, using…”
Get full text

Inferring the vertical distribution of CO and CO2 from TCCON total column values using the TARDISS algorithm by Parker, Harrison A, Laughner, Joshua L, Toon, Geoffrey C, Wunch, Debra, Roehl, Coleen M, Iraci, Laura T, Podolske, James R, McKain, Kathryn, Baier, Bianca C, Wennberg, Paul O

“…We describe an approach for determining limited information about the vertical distribution of carbon monoxide (CO) and carbon dioxide (CO2) from total column…”
Get full text

Methane retrieval from MethaneAIR using the CO2 proxy approach: a demonstration for the upcoming MethaneSAT mission by Christopher Chan Miller, Roche, Sébastien, Wilzewski, Jonas S, Liu, Xiong, Chance, Kelly, Souri, Amir H, Conway, Eamon, Luo, Bingkun, Samra, Jenna, Hawthorne, Jacob, Sun, Kang, Staebell, Carly, Chulakadabba, Apisada, Sargent, Maryann, Benmergui, Joshua S, Franklin, Jonathan E, Daube, Bruce C, Yang, Li, Laughner, Joshua L, Baier, Bianca C, Gautam, Ritesh, Omara, Mark, Wofsy, Steven C

“…Reducing methane (CH4) emissions from the oil and gas (O&G) sector is crucial for mitigating climate change in the near term. MethaneSAT is an upcoming…”
Get full text

Quantification of the effect of modeled lightning NO 2 on UV–visible air mass factors by Laughner, Joshua L., Cohen, Ronald C.

“…Space-borne measurements of tropospheric nitrogen dioxide (NO2) columns are up to 10x more sensitive to upper tropospheric (UT) NO2 than near-surface NO2 over…”
Get full text

Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm by Someya, Yu, Yoshida, Yukio, Ohyama, Hirofumi, Nomura, Shohei, Kamei, Akihide, Morino, Isamu, Mukai, Hitoshi, Matsunaga, Tsuneo, Laughner, Joshua L, Velazco, Voltaire A, Herkommer, Benedikt, Té, Yao, Sha, Mahesh Kumar, Kivi, Rigel, Zhou, Minqiang, Oh, Young Suk, Deutscher, Nicholas M, Griffith, David W. T

“…The National Institute for Environmental Studies has provided the column-averaged dry-air mole fraction of carbon dioxide and methane (XCO2 and XCH4) products…”
Get full text

The Berkeley High Resolution Tropospheric NO2 product by Laughner, Joshua L, Zhu, Qindan, Cohen, Ronald C

“…We describe upgrades to the Berkeley High Resolution (BEHR) NO2 satellite retrieval product. BEHR v3.0B builds on the NASA version 3 standard Ozone Monitoring…”
Get full text