Results 11 to 20 of about 27,752,256 (308)

The long-term assessment of air quality on an island in Malaysia

Heliyon, 2018
This study aims to evaluate the air quality on Langkawi Island, a famous tourist destination in Malaysia, using 13 years of data (1999–2011) recorded by the Malaysian Department of Environment.
Nor Diana Abdul Halim, Mohd Talib Latif, Fatimah Ahamad, Doreena Dominick, Jing Xiang Chung, Liew Juneng, Md Firoz Khan   +6 more
doaj   +1 more source

A sensitivity study of Surface Wind simulations over Coastal Ghana to selected Time Control and Nudging options in the Weather Research and Forecasting Model

Heliyon, 2019
Over the years, the Weather Research and Forecasting Model (WRF) has been gaining popularity as a low-cost alternative source of data for wind resource assessments.
Denis E.K. Dzebre, Akwasi A. Acheampong, Joshua Ampofo, Muyiwa S. Adaramola   +3 more
doaj   +1 more source

Demonstrated Aeolus Benefits in Atmospheric Sciences

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
We highlight some of the scientific benefits of the Aeolus Doppler Wind Lidar mission since its launch in August 2018. Its scientific objectives are to improve weather forecasts and to advance the understanding of atmospheric dynamics and its interaction with the atmospheric energy and water cycle.
Rennie, Michael, Stoffelen, Ad, Khaykin, Sergey, Osprey, Scott, Wright, Corwin, Banyard, Tim, Straume, Anne Grete, Reitebuch, Oliver, Krisch, Isabell, Parrinello, Tommaso, von Bismarck, Jonas, Wernham, Denny   +11 more
openaire   +2 more sources

Absorption coefficient of carbon dioxide across atmospheric troposphere layer

Heliyon, 2018
Absorption coefficient affected by carbon dioxide concentration and optical path length responsible for temperature or global warming across the troposphere layer, which is less than the altitude of 10 km in the atmosphere, is systematically presented in
Peng-Sheng Wei, Yin-Chih Hsieh, Hsuan-Han Chiu, Da-Lun Yen, Chieh Lee, Yi-Cheng Tsai, Te-Chuan Ting   +6 more
doaj   +1 more source

The occurrence of cyanobacteria blooms in freshwater ecosystems and their link with hydro-meteorological and environmental variations in Tanzania

Heliyon, 2019
Cyanobacteria (blue-green algae) are photosynthetic bacteria that under favorable environmental conditions produce secondary metabolites (cyanotoxins) which are harmful to the environment, including humans. The mass proliferation of harmful cyanobacteria
Offoro N. Kimambo, Jabulani R. Gumbo, Hector Chikoore   +2 more
doaj   +1 more source

Four-dimensional variational data assimilation for inverse modelling of atmospheric methane emissions: method and comparison with synthesis inversion [PDF]

, 2008
A four-dimensional variational (4D-Var) data assimilation system for inverse modelling of atmospheric methane emissions is presented. The system is based on the TM5 atmospheric transport model.
Bergamaschi, P., M. C. Krol, P. Bergamaschi, J. F. Meirink, Krol, M.C., Dep Natuurkunde, Meirink, J., Marine and Atmospheric Research, Meirink, J.F., Krol, M. C., Meirink, J. F.   +10 more
core   +3 more sources

A new approach for processing climate missing databases applied to daily rainfall data in Soummam watershed, Algeria

Heliyon, 2019
Missing data is a very frequent problem in climatology, it influences on the quality of results that will afford in hydrological studies, as well as water resources management.
Amir Aieb, Khodir Madani, Marco Scarpa, Brunella Bonaccorso, Khalef Lefsih   +4 more
doaj   +1 more source

Short-term wind speed forecasting in Uruguay using computational intelligence

Heliyon, 2019
Short-term wind speed forecasting for Colonia Eulacio, Soriano Department, Uruguay, is performed by applying an artificial neural network (ANN) technique to the hourly time series representative of the site.
P.J. Zucatelli, E.G.S. Nascimento, G.Y.R. Aylas, N.B.P. Souza, Y.K.L. Kitagawa, A.A.B. Santos, A.M.G. Arce, D.M. Moreira   +7 more
doaj   +1 more source

What can 14 CO measurements tell us about OH? [PDF]

, 2008
The possible use of 14CO measurements to constrain hydroxyl radical (OH) concentrations in the atmosphere is investigated. 14CO is mainly produced in the upper atmosphere from cosmic radiation.
Mak, J., Bergamaschi, P., Krol, M.C., Dep Natuurkunde, Meirink, J., Marine and Atmospheric Research, Meirink, J.F., Lowe, D.   +7 more
core   +2 more sources

A consistent molecular hydrogen isotope chemistry scheme based on an independent bond approximation [PDF]

, 2009
The isotopic composition of molecular hydrogen (H₂) produced by photochemical oxidation of methane (CH₄) and Volatile Organic Compounds (VOCs) is a key quantity in the global isotope budget of (H<sub>2 ...
Sub Atmospheric physics and chemistry, M. C. Krol, G. Pieterse, T. Röckmann, Krol, M.C., Pieterse, G., Afd Marine and Atmospheric Research, Marine and Atmospheric Research, Röckmann, T.   +8 more
core   +3 more sources