نتایج جستجو برای: merra 2

تعداد نتایج: 2525355  

Journal: :Atmospheric Environment 2022

Rapid industrialization and urbanization significantly contribute to air pollution in China. Essential constituents of are fine coarse particulate matter which the total mass aerosol particles with aerodynamic diameters smaller than ≤2.5 μm (PM2.5) ≤10 (PM10), respectively. These may cause severe health effects, impact atmospheric environment climate. However, limited number ground-based measur...

Journal: :Nexo 2023

Las precipitaciones varían espacial y temporalmente, lo que hace sea difícil obtener mediciones representativas en zonas remotas del país donde hay muy pocas estaciones meteorológicas instaladas. El desarrollo de la teledetección satelital ha permitido hacer estimaciones precipitación a diferentes escalas tiempo cualquier punto geográfico, por se pueden desarrollar sus mensuales anuales. objeti...

Journal: :Environmental research 2023

Abstract We present the Arctic atmospheric river (AR) climatology based on twelve sets of labels derived from ERA5 and MERRA-2 reanalyses for 1980–2019. The ARs were identified tracked in 3-hourly reanalysis data with a multifactorial approach either column-integrated water vapor (IWV) or integrated transport (IVT) exceeding one three climate thresholds (75th, 85th, 95th percentiles). Time seri...

Journal: :Earth and Space Science 2023

The MERRA-2 Stratospheric Composition Reanalysis of Aura Microwave Limb Sounder (M2-SCREAM) is a new reanalysis stratospheric ozone, water vapor, hydrogen chloride (HCl), nitric acid (HNO3) and nitrous oxide (N2O) between 2004 the present (with latency several months). assimilated fields are provided at 50-km horizontal resolution three-hourly frequency. M2-SCREAM assimilates version 4.2 (MLS) ...

Journal: :Atmospheric Measurement Techniques 2021

Abstract. Monitoring and describing the spatiotemporal variability in dust aerosols is crucial for understanding their multiple effects, related feedbacks, impacts within Earth system. This study describes development of ModIs Dust AeroSol (MIDAS) data set. MIDAS provides columnar daily optical depth (DOD) at 550 nm a global scale fine spatial resolution (0.1? × 0.1?) over 15-year period (2003–...

2016
David Barton

There are over 900 nights of observations taken by the Rayleigh lidar above Utah State University from 1993 to 2004. The data have been reduced to give absolute temperatures and relative densities in the mesosphere, from 45-90 km (Herron, 2004, 2007). From the 11 years of relative density data an 11-year climatology of mesospheric densities above Logan, Utah has been created. From this climatol...

Journal: :Atmospheric Environment 2022

This contribution compares the influences of atmospheric reanalysis, in particular, Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) produced by NASA's Global Modeling Assimilation Office global reanalysis composition Copernicus Atmosphere Monitoring Service (CAMS), on accuracy clear-sky irradiance estimates. In terms output, comparison shows there exist grea...

Journal: :Earth 2022

On the first several days of October 2013, daily chlorophyll a (chl a) data acquired by Moderate Resolution Imaging Spectroradiometer (MODIS) onboard National Aeronautics and Space Administration (NASA) Aqua satellite detected marked increase in concentrations vicinity Chuuk Lagoon Federated States Micronesia. Such an increase, likely indicative phytoplankton bloom, has not been observed this l...

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