The Combined Effect of Ozone and Aerosols on Erythemal Irradiance in an Extremely Low Ozone Event during May 2020
نویسندگان
چکیده
In this study we focus on measurements and modeled UV index in the region of Athens, Greece, during a low ozone event. During period 12–19 May 2020, total column (TOC) showed extremely values, 35–55 Dobson Units (up to 15%) decrease from climatic mean (being lower than −2σ). This condition favors increase erythemal irradiance, since stratospheric is most important attenuator at UVB spectral region. Simultaneously, an intrusion Saharan dust aerosols has masked large part effect irradiance. order investigate event, have used solar irradiance Precision Solar Radiometer (PSR), TOC Brewer spectrophotometer, Radiative Transfer Model (RTM) calculations. calculations Index (UVI) ~30% compared long-term normal UVI due while same time for particular days, by ~20%. The RTM been response these variations different zenith angles (SZAs). Spectra simulated with measured ones average difference ~2% was found. points out importance accurate or forecasts both when deriving under unusual ozone–high aerosol conditions.
منابع مشابه
the effect of e-64 on the developmental competence of sheep cocs during in vitro maturation
in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.
Ship-borne measurements of erythemal UV irradiance and ozone content in various climate zones.
Ship-borne measurements of spectral as well as biologically effective UV irradiance have been performed on the German research vessel Polarstern during the Atlantic transect from Bremerhaven, Germany (53.5 degrees N, 8.5 degrees E), to Cape Town, South Africa (33.6 degrees S, 18.3 degrees E), from 13 October to 17 November 2005. Such measurements are required to study UV effects on marine organ...
متن کاملan investigation of the impact of self monitoring on langauge teachers motivational practice and its effect on learners motivation
the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...
Analysis of ozone and aerosols during the ADRIMED experiment
Introduction Conclusions References Tables Figures
متن کاملthe effect of oxytetracycline on serum calcium, phosphorus and magnesium in cattle
نتایج این مطالعه نشان می دهد که مقدار کلسیم (یونیزه و تام)، منیزیم و فسفر به طور معنی داری تغییر پیدا کرد به جزء مقدار کلسیم تام و منیزیم در روش داخل عضلانی که تغییر معنی داری نداشته است. بر اساس نتایج این مطالعه می توان نتیجه گیری کرد که اکسی تتراساکلین بر روی مقادیر سرمی کلسیم و منیزیم تأثیر می گذارد باید مقدار این کاتیون ها در بیماران، در هنگامی که اکسی تتراسایکلین استفاده می شود مورد توجه ق...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Atmosphere
سال: 2021
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos12020145