Our formula can help scientists understand air pollution and its climate effects more accurately using satellite and ground‐based data independently of location. Key Points: A parameterization linking the fine‐mode fraction of aerosol optical depth to the Angstrom exponent was developed using AERONET ...
The aerosol optical thickness at 500 nm measured by the photometer was transformed to 550 nm by using the Angstrom classical formula. Changes in the spectral aerosol optical thickness in Estonia (1951-2004)/Aerosooli spektraalse optilise paksuse muutused Eestis aastatel 1951-2004 Higurashi, and...
The AE440−870nm from MII is computed using the Ångström power formula from the corresponding AOD channels. T and RH values ranged between 4.40–39.70 °C and 11.80–89.80% with average values of 24.26 °C and 45.36%, respectively. Table 1. Minimum, maximum, and average values of ...
整理的文献为 Revised optical air mass tables and approximation formula。 文章一开始介绍了一个由Karsten在1965年发表的并且广泛被世界所采用的关于大气质量的近似公式,并且讨论了一些由于各个学科对于不同的物理量符号和术语的不同使得读者经常由此而困惑。 其后介绍了一个计算大气光学质量的近似公式...
Aerosol optical thicknesses ... YJ Kaufman,RS Fraser - 《Journal of Applied Meteorology》 被引量: 1530发表: 1983年 Revised optical air mass tables and approximation formula We correct an error in a widely used air mass table by recalculating the values on the basis of the ISO Standard ...
which directly pollute the earth's atmosphere. Combining the empirical formula of the relationship betweenextinction coefficient, aerosol concentration andrelative humiditywith the relationship derived from the Kim[57]'s study between the visibility and atmospheric extinction coefficient, we can obtain the ...
(Aerosol Optical Depth (AOD) with Precipitable Water and Angstrom Parameter, Spectral Deconvolution Algorithm (SDA) Retrievals—Fine Mode AOD, Coarse Mode AOD, and Fine Mode Fraction) andhttps://giovanni.gsfc.nasa.gov/giovanni/(product DOI 10.5067/MODIS/MYD08_D3.061), respectively. HYSPLIT model ...
The aerosol optical thickness τa(λ) at 936 nm can be extrapolated from the AODs in the 870 nm and 1020 nm non-water vapor bands, according to the well-known Ångström formula (Angstrom, 1929)(4)τa(λ)=βλ−αWhere α is the so-called Ångström exponent and β is the ...
N is the number density of large/small particles, τ is the dust optical depth in a vertical column (“MGCM dust scenario”), H is the altitude of the grid cell, reff is the effective radius, veff is the effective variance, γ is the population ratio, and n(r) and n(r)∗ are ...
This study is the first attempt to use MISR prototype 4.4 km-resolution AOD (aerosol optical depth) components data to predict PM2.5 sulfate, nitrate, OC and EC concentrations at the sub-regional scale. In spite of its low temporal sampling frequency, our analysis suggests that the MISR ...