Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Sajeev Philip"'
Autor:
Jun Wang, Ning Zeng, Meirong Wang, Fei Jiang, Frédéric Chevallier, Sean Crowell, Wei He, Matthew S. Johnson, Junjie Liu, Zhiqiang Liu, Scot M. Miller, Sajeev Philip, Hengmao Wang, Mousong Wu, Weimin Ju, Shuzhuang Feng, Mengwei Jia
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 11, Pp n/a-n/a (2023)
Abstract The magnitude and spatial pattern of anomalous net biome exchange (NBE) induced by the 2015/16 El Niño over Amazonian rainforests remain uncertain. We here investigated them using multi‐model posterior NBE products in the Orbiting Carbon
Externí odkaz:
https://doaj.org/article/5a3257c1bfc34ec2b0f7dafc4f649a98
Autor:
Hui Chen, Wei He, Jinxiu Liu, Ngoc Tu Nguyen, Frédéric Chevallier, Hua Yang, Yiming Lv, Chengcheng Huang, Christian Rödenbeck, Scot M Miller, Fei Jiang, Junjie Liu, Matthew S Johnson, Sajeev Philip, Zhiqiang Liu, Ning Zeng, Sourish Basu, David F Baker
Publikováno v:
Environmental Research Letters, Vol 19, Iss 5, p 054047 (2024)
Southwestern North America (SWNA) continuously experienced megadroughts and large wildfires in 2020 and 2021. Here, we quantified their impact on the terrestrial carbon budget using net biome production (NBP) estimates from an ensemble of atmospheric
Externí odkaz:
https://doaj.org/article/b21316d667fc42df9feb000487b26e19
Autor:
Yu Yan Cui, Li Zhang, Andrew R. Jacobson, Matthew S. Johnson, Sajeev Philip, David Baker, Frederic Chevallier, Andrew E. Schuh, Junjie Liu, Sean Crowell, Hélène E. Peiro, Feng Deng, Sourish Basu, Kenneth J. Davis
Publikováno v:
Geophysical Research Letters, Vol 49, Iss 18, Pp n/a-n/a (2022)
Abstract Atmospheric inversion estimates of net ecosystem exchange (NEE) of CO2 are increasingly relevant to climate policy. We evaluated sub‐continental, seasonal estimates of CO2 NEE from nine global inversion systems that participated in the Orb
Externí odkaz:
https://doaj.org/article/ce2c244c10694af0831ab8b906c14eb2
Autor:
Sajeev Philip, Randall V Martin, Graydon Snider, Crystal L Weagle, Aaron van Donkelaar, Michael Brauer, Daven K Henze, Zbigniew Klimont, Chandra Venkataraman, Sarath K Guttikunda, Qiang Zhang
Publikováno v:
Environmental Research Letters, Vol 12, Iss 4, p 044018 (2017)
Global measurements of the elemental composition of fine particulate matter across several urban locations by the Surface Particulate Matter Network reveal an enhanced fraction of anthropogenic dust compared to natural dust sources, especially over A
Externí odkaz:
https://doaj.org/article/c5fe3ed7aee94b0c8c4eab13761069e0
Autor:
Siwen Wang, Qiang Zhang, Randall V Martin, Sajeev Philip, Fei Liu, Meng Li, Xujia Jiang, Kebin He
Publikováno v:
Environmental Research Letters, Vol 10, Iss 11, p 114015 (2015)
To evaluate the real reductions in sulfur dioxide (SO _2 ) emissions from coal-fired power plants in China, Ozone Monitoring Instrument (OMI) remote sensing SO _2 columns were used to inversely model the SO _2 emission burdens surrounding 26 isolated
Externí odkaz:
https://doaj.org/article/65a76dd3e5884f94a4ed9d2665e9c021
Autor:
Matthew S. Johnson, Amir H. Souri, Sajeev Philip, Rajesh Kumar, Aaron Naeger, Jeffrey Geddes, Laura Judd, Scott Janz, Heesung Chong, John Sullivan
Publikováno v:
Atmospheric Measurement Techniques. 16:2431-2454
Satellite retrievals of tropospheric-column formaldehyde (HCHO) and nitrogen dioxide (NO2) are frequently used to investigate the sensitivity of ozone (O3) production to emissions of nitrogen oxides and volatile organic carbon compounds. This study i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a475bef62c0409491c00a3dfebef872
https://doi.org/10.5194/amt-16-2431-2023
https://doi.org/10.5194/amt-16-2431-2023
Autor:
Yilong Wang, Xiangjun Tian, Frédéric Chevallier, Matthew S. Johnson, Sajeev Philip, David F. Baker, Andrew E. Schuh, Feng Deng, Xingying Zhang, Lu Zhang, Dan Zhu, Xuhui Wang
Publikováno v:
Global Change Biology
Global Change Biology, 2022, 28 (23), pp.6838-6846. ⟨10.1111/gcb.16412⟩
Global Change Biology, 2022, 28 (23), pp.6838-6846. ⟨10.1111/gcb.16412⟩
International audience; Land carbon sink is a vital component for the achievement of China's ambitious carbon neutrality goal, but its magnitude is poorly known. Atmospheric observations and inverse models are valuable tools to constrain the China's
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2cf40f3009b3bfe6ea5468d139988d6
https://doi.org/10.1111/gcb.16412
https://doi.org/10.1111/gcb.16412
Autor:
Amir H. Souri, Matthew S. Johnson, Glenn M. Wolfe, James H. Crawford, Alan Fried, Armin Wisthaler, William H. Brune, Donald R. Blake, Andrew J. Weinheimer, Tijl Verhoelst, Steven Compernolle, Gaia Pinardi, Corinne Vigouroux, Bavo Langerock, Sungyeon Choi, Lok Lamsal, Lei Zhu, Shuai Sun, Ronald C. Cohen, Kyung-Eun Min, Changmin Cho, Sajeev Philip, Xiong Liu, Kelly Chance
The availability of formaldehyde (HCHO) (a proxy for volatile organic compound reactivity) and nitrogen dioxide (NO2) (a proxy for nitrogen oxides) tropospheric columns from ultraviolet–visible (UV–Vis) satellites has motivated many to use their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e915e58a2c267f7ca877d75ed6b80de
https://acp.copernicus.org/articles/23/1963/2023/
https://acp.copernicus.org/articles/23/1963/2023/
Autor:
Brendan Byrne, Junjie Liu, Yonghong Yi, Abhishek Chatterjee, Sourish Basu, Rui Cheng, Russell Doughty, Frédéric Chevallier, Kevin W. Bowman, Nicholas C. Parazoo, David Crisp, Xing Li, Jingfeng Xiao, Stephen Sitch, Bertrand Guenet, Feng Deng, Matthew S. Johnson, Sajeev Philip, Patrick C. McGuire, Charles E. Miller
Publikováno v:
Biogeosciences
Biogeosciences, 2022, 19, pp.4779-4799. ⟨10.5194/bg-19-4779-2022⟩
Biogeosciences, 2022, 19, pp.4779-4799. ⟨10.5194/bg-19-4779-2022⟩
Site-level observations have shown pervasive cold season CO2 release across Arctic and boreal ecosystems, impacting annual carbon budgets. Still, the seasonality of CO2 emissions are poorly quantified across much of the high latitudes due to the spar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a06cd37e6f2f2dae68e03f70bcef580a
https://bg.copernicus.org/articles/19/4779/2022/
https://bg.copernicus.org/articles/19/4779/2022/
Autor:
Matthew S. Johnson, Sajeev Philip, Rajesh Kumar, Aaron Naeger, Amir H. Souri, Jeffrey Geddes, Laura Judd, Scott Janz, John Sullivan
Satellite retrievals of tropospheric column formaldehyde (HCHO) and nitrogen dioxide (NO2) are frequently used to investigate the sensitivity of ozone (O3) production to concentrations and emissions of nitrogen oxides (NOx) and volatile organic carbo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb3338df2d80dbd95e75c91969d90d0e
https://amt.copernicus.org/preprints/amt-2022-237/
https://amt.copernicus.org/preprints/amt-2022-237/