Zobrazeno 1 - 10
of 286
pro vyhledávání: '"Alfonso Saiz‐Lopez"'
Autor:
Daniel Viúdez-Moreiras, Alfonso Saiz-Lopez, Michael D. Smith, Víctor Apestigue, Ignacio Arruego, Elisa García, Juan J. Jiménez, José A. Rodriguez-Manfredi, Daniel Toledo, Mike Wolff, María-Paz Zorzano
Publikováno v:
Remote Sensing, Vol 16, Iss 20, p 3914 (2024)
Ozone plays a key role in both atmospheric chemistry and UV absorption in planetary atmospheres. On Mars, upper-tropospheric ozone has been widely characterized by space-based instruments. However, surface ozone remains poorly characterized, hindered
Externí odkaz:
https://doaj.org/article/3689202f96374f4b817deec10caa90c3
Autor:
Qinyi Li, Daphne Meidan, Peter Hess, Juan A. Añel, Carlos A. Cuevas, Scott Doney, Rafael P. Fernandez, Maarten van Herpen, Lena Höglund-Isaksson, Matthew S. Johnson, Douglas E. Kinnison, Jean-François Lamarque, Thomas Röckmann, Natalie M. Mahowald, Alfonso Saiz-Lopez
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)
Abstract Atmospheric methane is both a potent greenhouse gas and photochemically active, with approximately equal anthropogenic and natural sources. The addition of chlorine to the atmosphere has been proposed to mitigate global warming through metha
Externí odkaz:
https://doaj.org/article/89b4dd36a5f34af3952e8cffe06f6ad0
Autor:
Yee Jun Tham, Nina Sarnela, Siddharth Iyer, Qinyi Li, Hélène Angot, Lauriane L. J. Quéléver, Ivo Beck, Tiia Laurila, Lisa J. Beck, Matthew Boyer, Javier Carmona-García, Ana Borrego-Sánchez, Daniel Roca-Sanjuán, Otso Peräkylä, Roseline C. Thakur, Xu-Cheng He, Qiaozhi Zha, Dean Howard, Byron Blomquist, Stephen D. Archer, Ludovic Bariteau, Kevin Posman, Jacques Hueber, Detlev Helmig, Hans-Werner Jacobi, Heikki Junninen, Markku Kulmala, Anoop S. Mahajan, Andreas Massling, Henrik Skov, Mikko Sipilä, Joseph S. Francisco, Julia Schmale, Tuija Jokinen, Alfonso Saiz-Lopez
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)
Observations are reported of HClO3 and HClO4 in the atmosphere and their widespread occurrence over the pan-Arctic during spring, providing further insights into atmospheric chlorine cycling in the polar environment.
Externí odkaz:
https://doaj.org/article/51aef58d65b6453ebe20533deba264d5
Autor:
Thomas Röckmann, Maarten van Herpen, Chloe Brashear, Carina van der Veen, Sergey Gromov, Qinyi Li, Alfonso Saiz-Lopez, Daphne Meidan, Africa Barreto, Natalia Prats, Ignacio Mármol, Ramón Ramos, Isabel Baños, Jesús M Arrieta, Sönke Zaehnle, Armin Jordan, Heiko Moossen, Helder Timas, Dickon Young, Peter Sperlich, Rowena Moss, Matthew S Johnson
Publikováno v:
Environmental Research Letters, Vol 19, Iss 6, p 064054 (2024)
The reaction of CH _4 with chlorine (Cl) radicals in the atmosphere is associated with an extraordinarily strong isotopic fractionation, where ^12 CH _4 reacts about 70 ‰ faster with Cl than ^13 CH _4 . Therefore, although the Cl-based sink of CH _
Externí odkaz:
https://doaj.org/article/012dd9df755f41d9bc662ffba918a681
Autor:
Daphne Meidan, Qinyi Li, Carlos A Cuevas, Scott C Doney, Rafael P Fernandez, Maarten M J W van Herpen, Matthew S Johnson, Douglas E Kinnison, Longlei Li, Douglas S Hamilton, Alfonso Saiz-Lopez, Peter Hess, Natalie M Mahowald
Publikováno v:
Environmental Research Letters, Vol 19, Iss 5, p 054023 (2024)
Keeping global surface temperatures below international climate targets will require substantial measures to control atmospheric CO _2 and CH _4 concentrations. Recent studies have focused on interventions to decrease CH _4 through enhanced atmospher
Externí odkaz:
https://doaj.org/article/4258d9c883584a47875d8022be041e4d
Autor:
Antonio Francés-Monerris, Javier Carmona-García, Tarek Trabelsi, Alfonso Saiz-Lopez, James R. Lyons, Joseph S. Francisco, Daniel Roca-Sanjuán
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Polysulfur compounds have been ascribed as the unknown near-UV absorbers in Venusian atmosphere and play a key role in the sulfur chemical cycle of this planet. Here, authors establish their production from (SO)2 on the grounds of quantifications of
Externí odkaz:
https://doaj.org/article/9afd2050bdf648b09173dc64101973cb
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 7, Pp n/a-n/a (2023)
Abstract We use the 3‐D Whole Atmospheric Community Climate Model to investigate stratospheric ozone depletion due to the launch of small satellites (e.g., CubeSats) with an iodine propulsion system. The model considers the injection of iodine from
Externí odkaz:
https://doaj.org/article/a9cc242ff6c1423dbddf7389d612b9a1
Autor:
Qinyi Li, Rafael P. Fernandez, Ryan Hossaini, Fernando Iglesias-Suarez, Carlos A. Cuevas, Eric C. Apel, Douglas E. Kinnison, Jean-François Lamarque, Alfonso Saiz-Lopez
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-11 (2022)
Methane is a powerful greenhouse gas and previous studies focus on its sources with less attention on the loss. Here the authors show that reactive halogen species, not considered in climate projections, significantly reduces the methane loss, increa
Externí odkaz:
https://doaj.org/article/b1a5ac2e3a3743229ec16ed4ef1ba1ab
Autor:
Xiang Peng, Tao Wang, Weihao Wang, A. R. Ravishankara, Christian George, Men Xia, Min Cai, Qinyi Li, Christian Mark Salvador, Chiho Lau, Xiaopu Lyu, Chun Nan Poon, Abdelwahid Mellouki, Yujing Mu, Mattias Hallquist, Alfonso Saiz-Lopez, Hai Guo, Hartmut Herrmann, Chuan Yu, Jianing Dai, Yanan Wang, Xinke Wang, Alfred Yu, Kenneth Leung, Shuncheng Lee, Jianmin Chen
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-10 (2022)
This study unravels an important daytime Cl2 source in the extra-polar atmosphere and shows that photolysis of particle nitrate at high acidity produced unprecedented levels of Cl2, boosting the oxidative power and air pollutants like O3.
Externí odkaz:
https://doaj.org/article/a6a5ce4c2e424b758cab21136be93787
Autor:
Juan Pablo Corella, Niccolo Maffezzoli, Andrea Spolaor, Paul Vallelonga, Carlos A. Cuevas, Federico Scoto, Juliane Müller, Bo Vinther, Helle A. Kjær, Giulio Cozzi, Ross Edwards, Carlo Barbante, Alfonso Saiz-Lopez
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Iodine is important for new particle formation in the atmosphere, but how it varies over long time scales is not well known. Here, the authors present ice core data from the last 127,000 years that show that iodine varied between glacials and intergl
Externí odkaz:
https://doaj.org/article/db45eefbb0634818a4ad2eed36a6138a