Results 51 to 60 of about 4,017 (177)

Relationship between Particulate Matter (PM2.5) Concentration and Aerosol Optical Depth (AOD) throughout Peninsular Malaysia

IOP Conference Series: Earth and Environmental Science, 2022
Abstract A particular matter (PM2.5) is a small particle in the air that reduces visibility and causes air to fade when raised. It is one of the parameters that contribute to air pollution. There are a few causes of air pollution. It can appear in solid and liquid particles and certain gases that are suspended in the air.
Noorfatekah Talib, Nur Amira Mohd Sa’aidi, Rohayu Haron Narashid, Nurul Ain Mohd Zaki, Nurhafiza Md Saad, Suzanah Abdullah, Fazly Amri Mohd   +6 more
openaire   +1 more source

Large Particle Size and Thick Coating Influence Pyrocumulonimbus Smoke Radiative Forcing and Stratospheric Warming: Insights From the 2019–2020 Australian Megafires

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Large particle size and thick coatings have been detected in pyrocumulonimbus (pyroCb) smoke injected into the lower stratosphere, enhancing both extinction and absorption of smoke. Here, we quantified how particle size and coating, via internal mixing of non‐absorbing species on black carbon, influence pyroCb smoke radiative forcing and ...
Xi Chen, Jun Wang, David A. Peterson, Yaowei Li, William Julstrom, Frank N. Keutsch, John Dykema   +6 more
wiley   +1 more source

Long-Term Trends in Black Carbon and Aerosol Optical Depth Over the Central Himalayas: Potential Causes and Implications

Frontiers in Earth Science, 2022
Continuous ground-based observations of aerosols over the Himalayan region are highly beneficial in studying aerosol trends over the complex geographic terrain.
Hema Joshi, Hema Joshi, Manish Naja, Priyanka Srivastava, Priyanka Srivastava, Tarun Gupta, Mukunda M. Gogoi, S. Suresh Babu   +7 more
doaj   +1 more source

Toward Closing the Hydroxyl Radical (OH) Budget: Assessing the Feasibility and Uncertainties in Constraining primary OH Production From Space

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract Recent progress in constraining the atmosphere's primary oxidant, the hydroxyl radical (OH), with machine learning (ML) and satellite data raises the intriguing possibility of also constraining individual OH chemical production and loss terms.
Daniel C. Anderson, Bryan N. Duncan, Amir H. Souri, Junhua Liu, Sarah Strode, Doyeon Ahn   +5 more
wiley   +1 more source

Siderite Concretions in Svalbard Lake Sediments Capture 7,000 Years of Extreme Arctic Cold Season Climate Change

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract The Arctic warms faster than anywhere else on Earth, and paleoclimate data are key to placing this amplified response in a long‐term context. But most past temperature proxies record growing season conditions, when their biological signal carriers are produced.
Willem G. M. van der Bilt, Barnabás Csiszár, Marie Bulínová, Leif‐Erik R. Pedersen, Alexandra Rouillard, Ingunn H. Thorseth, Torgeir O. Røthe, Mateusz C. Strzelecki, Anders Schomacker   +8 more
wiley   +1 more source

Effects of Aerosol on Cloud Liquid Water Path: Statistical Method a Potential Source for Divergence in Past Observation Based Correlative Studies

Atmosphere, 2015
Studies show a divergence in correlation between aerosol and cloud proxies, which has been thought of in the past as the results of varying physical mechanisms.
Ousmane Sy Savane, Brian Vant-Hull, Shayesteh Mahani, Reza Khanbilvardi   +3 more
doaj   +1 more source

TURAAB: A 34‐Year Dust and Atmospheric Regional Reanalysis for the Middle East, North Africa and Mediterranean—First Insights

Meteorological Applications, Volume 33, Issue 3, May/June 2026.
TURAAB: A 34‐year dust and atmospheric regional reanalysis for the Mediterranean–MENA region. We present TURAAB, a 34‐year, 6‐km regional reanalysis integrating meteorology and dust for the Mediterranean–MENA domain. The system demonstrates good behavior, aligning closely with observational and reanalysis products. TURAAB provides a high‐value resource
Platon Patlakas, Ioannis Chaniotis, Christos Stathopoulos, Zakiah Alhajji, Ishaq Dimeji Sulaymon, Alaa Mhawish, Jumaan Alqahtani   +6 more
wiley   +1 more source

Temporal and spectral cloud screening of polar-winter aerosol optical depth (AOD): impact of homogeneous and inhomogeneous clouds and crystal layers on climatological-scale AODs [PDF]

Atmospheric Chemistry and Physics, 2016
Abstract. We compared star photometry-derived, polar winter aerosol optical depths (AODs), acquired at Eureka, Nunavut, Canada and Ny-Ålesund, Svalbard with GEOS-Chem (GC) simulations as well as ground-based lidar and CALIOP retrievals. The results indicate significant cloud and/or low-altitude ice crystal (LIC) contamination which is only partially ...
N. T. O'Neill, K. Baibakov, K. Baibakov, S. Hesaraki, L. Ivanescu, R. V. Martin, C. Perro, J. P. Chaubey, A. Herber, T. J. Duck   +9 more
openaire   +3 more sources

A low-cost monitor for measurement of fine particulate matter and aerosol optical depth – Part 2: Citizen-science pilot campaign in northern Colorado [PDF]

Atmospheric Measurement Techniques, 2019
A pilot field campaign was conducted in the fall and winter of 2017 in northern Colorado to test the deployment of the Aerosol Mass and Optical Depth (AMOD) instrument as part of the Citizen-Enabled Aerosol Measurements for Satellites (CEAMS) network ...
B. Ford, J. R. Pierce, E. Wendt, M. Long, S. Jathar, J. Mehaffy, J. Tryner, C. Quinn, C. Quinn, L. van Zyl, C. L'Orange, D. Miller-Lionberg, J. Volckens   +12 more
doaj   +1 more source

Hourly PM2.5 Estimates From TEMPO and ABI Aerosol Retrievals Using Geographically Weighted Regression

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract The Tropospheric Emissions: Monitoring of Pollution (TEMPO) mission, launched in April 2023 as the first geostationary sensor dedicated to monitoring air quality over North America, provides both traditional aerosol optical depth (AOD) retrievals and novel aerosol layer height (ALH) products.
Hai Zhang, Shobha Kondragunta, Zigang Wei   +2 more
wiley   +1 more source