Aerosol-radiation feedback and PM10 air concentrations over Poland
PBN-AR
Instytucja
Wydział Nauk o Ziemi i Kształtowania Środowiska (Uniwersytet Wrocławski)
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
PURE AND APPLIED GEOPHYSICS (25pkt w roku publikacji)
ISSN
0033-4553
EISSN
1420-9136
Wydawca
BIRKHAUSER VERLAG AG
DOI
URL
Rok publikacji
2017
Numer zeszytu
2
Strony od-do
551–568
Numer tomu
174
Identyfikator DOI
Liczba arkuszy
Autorzy
Pozostali autorzy
+ 3
Streszczenia
Język
angielski
Treść
We have implemented the WRF-Chem model version 3.5 over Poland to quantify the direct and indirect feedback effects of aerosols on simulated meteorology and aerosol concentrations. Observations were compared with results from three simulations at high spatial resolutions of 5 × 5 km: (1) BASE—without any aerosol feedback effects; (2) DIR—with direct aerosol-radiative effects (3) INDIR—with direct and indirect aerosol-radiative effects. We study the overall effect during January 2011 as well as selected episodes of the highest differences in PM10 concentrations between the three simulations. For the DIR simulation, the decrease in monthly mean incoming solar radiation (SWDOWN) appears for the entire study area. It changes geographically, from about −8.0 to −2.0 W m−2, respectively for the southern and northern parts of the country. The highest changes do not correspond to the highest PM10 concentration. Due to the solar radiation changes, the surface mean monthly temperature (T2) decreases for 96 % of the area of Poland, but not more than 1.0 °C. Monthly mean PBLH changes by more than ±5 m for 53 % of the domain. Locally the differences in PBLH between the DIR and BASE are higher than ± 20 m. Due to the direct effect, for 84 % of the domain, the mean monthly PM10 concentrations increase by up to 1.9 µg m−3. For the INDIR simulation the spatial distribution of changes in incoming solar radiation as well as air temperature is similar to the DIR simulation. The decrease of SWDOWN is noticed for the entire domain and for 23 % of the domain is higher than −5.0 W m−2. The absolute differences of PBLH are slightly higher for INDIR than DIR but similarly distributed spatially. For daily episodes, the differences between the simulations are higher, both for meteorology and PM10 concentrations, and the pattern of changes is usually more complex. The results indicate the potential importance of the aerosol feedback effects on modelled meteorology and PM10 concentrations.
Inne
System-identifier
PX-591c3899d5de970570992910
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