Comparison of PMCAMx aerosol optical depth predictions over Europe with AERONET and MODIS measurements

Antigoni Panagiotopoulou, Panagiotis Charalampidis, Christos Fountoukis, Christodoulos Pilinis, Spyros N. Pandis

Research output: Contribution to journalArticle

Abstract

The ability of chemical transport model (CTM) PMCAMx to reproduce aerosol optical depth (AOD) measurements by the Aerosol Robotic Network (AERONET) and the Moderate Resolution Imaging Spectroradiometer (MODIS) over Europe during the photochemically active period of May 2008 (EUCAARI campaign) is evaluated. Periods with high dust or sea-salt levels are excluded, so the analysis focuses on the ability of the model to simulate the mostly secondary aerosol and its interactions with water. PMCAMx reproduces the monthly mean MODIS and AERONET AOD values over the Iberian Peninsula, the British Isles, central Europe, and Russia with a fractional bias of less than 15% and a fractional error of less than 30 %. However, the model overestimates the AOD over northern Europe, most probably due to an overestimation of organic aerosol and sulfates. At the other end, PMCAMx underestimates the monthly mean MODIS AOD over the Balkans, the Mediterranean, and the South Atlantic. These errors appear to be related to an underestimation of sulfates. Sensitivity tests indicate that the evaluation results of the monthly mean AODs are quite sensitive to the relative humidity (RH) fields used by PMCAMx, but are not sensitive to the simulated size distribution and the black carbon mixing state. The screening of the satellite retrievals for periods with high dust (or coarse particles in general) concentrations as well as the combination of the MODIS and AERONET datasets lead to more robust conclusions about the ability of the model to simulate the secondary aerosol components that dominate the AOD during this period.

Original languageEnglish
Pages (from-to)4257-4272
Number of pages16
JournalGeoscientific Model Development
Volume9
Issue number11
DOIs
Publication statusPublished - 25 Nov 2016
Externally publishedYes

Fingerprint

Aerosol
optical depth
MODIS
Aerosols
Robotics
Imaging
aerosol
Imaging techniques
Prediction
prediction
sulfate
dust
Dust
AERONET
Europe
comparison
Fractional
sea salt
black carbon
Relative Humidity

ASJC Scopus subject areas

  • Modelling and Simulation
  • Earth and Planetary Sciences(all)

Cite this

Comparison of PMCAMx aerosol optical depth predictions over Europe with AERONET and MODIS measurements. / Panagiotopoulou, Antigoni; Charalampidis, Panagiotis; Fountoukis, Christos; Pilinis, Christodoulos; Pandis, Spyros N.

In: Geoscientific Model Development, Vol. 9, No. 11, 25.11.2016, p. 4257-4272.

Research output: Contribution to journalArticle

Panagiotopoulou, Antigoni ; Charalampidis, Panagiotis ; Fountoukis, Christos ; Pilinis, Christodoulos ; Pandis, Spyros N. / Comparison of PMCAMx aerosol optical depth predictions over Europe with AERONET and MODIS measurements. In: Geoscientific Model Development. 2016 ; Vol. 9, No. 11. pp. 4257-4272.
@article{b7c9438649654f0f802a681fc947d586,
title = "Comparison of PMCAMx aerosol optical depth predictions over Europe with AERONET and MODIS measurements",
abstract = "The ability of chemical transport model (CTM) PMCAMx to reproduce aerosol optical depth (AOD) measurements by the Aerosol Robotic Network (AERONET) and the Moderate Resolution Imaging Spectroradiometer (MODIS) over Europe during the photochemically active period of May 2008 (EUCAARI campaign) is evaluated. Periods with high dust or sea-salt levels are excluded, so the analysis focuses on the ability of the model to simulate the mostly secondary aerosol and its interactions with water. PMCAMx reproduces the monthly mean MODIS and AERONET AOD values over the Iberian Peninsula, the British Isles, central Europe, and Russia with a fractional bias of less than 15{\%} and a fractional error of less than 30 {\%}. However, the model overestimates the AOD over northern Europe, most probably due to an overestimation of organic aerosol and sulfates. At the other end, PMCAMx underestimates the monthly mean MODIS AOD over the Balkans, the Mediterranean, and the South Atlantic. These errors appear to be related to an underestimation of sulfates. Sensitivity tests indicate that the evaluation results of the monthly mean AODs are quite sensitive to the relative humidity (RH) fields used by PMCAMx, but are not sensitive to the simulated size distribution and the black carbon mixing state. The screening of the satellite retrievals for periods with high dust (or coarse particles in general) concentrations as well as the combination of the MODIS and AERONET datasets lead to more robust conclusions about the ability of the model to simulate the secondary aerosol components that dominate the AOD during this period.",
author = "Antigoni Panagiotopoulou and Panagiotis Charalampidis and Christos Fountoukis and Christodoulos Pilinis and Pandis, {Spyros N.}",
year = "2016",
month = "11",
day = "25",
doi = "10.5194/gmd-9-4257-2016",
language = "English",
volume = "9",
pages = "4257--4272",
journal = "Geoscientific Model Development",
issn = "1991-959X",
publisher = "Copernicus Gesellschaft mbH",
number = "11",

}

TY - JOUR

T1 - Comparison of PMCAMx aerosol optical depth predictions over Europe with AERONET and MODIS measurements

AU - Panagiotopoulou, Antigoni

AU - Charalampidis, Panagiotis

AU - Fountoukis, Christos

AU - Pilinis, Christodoulos

AU - Pandis, Spyros N.

PY - 2016/11/25

Y1 - 2016/11/25

N2 - The ability of chemical transport model (CTM) PMCAMx to reproduce aerosol optical depth (AOD) measurements by the Aerosol Robotic Network (AERONET) and the Moderate Resolution Imaging Spectroradiometer (MODIS) over Europe during the photochemically active period of May 2008 (EUCAARI campaign) is evaluated. Periods with high dust or sea-salt levels are excluded, so the analysis focuses on the ability of the model to simulate the mostly secondary aerosol and its interactions with water. PMCAMx reproduces the monthly mean MODIS and AERONET AOD values over the Iberian Peninsula, the British Isles, central Europe, and Russia with a fractional bias of less than 15% and a fractional error of less than 30 %. However, the model overestimates the AOD over northern Europe, most probably due to an overestimation of organic aerosol and sulfates. At the other end, PMCAMx underestimates the monthly mean MODIS AOD over the Balkans, the Mediterranean, and the South Atlantic. These errors appear to be related to an underestimation of sulfates. Sensitivity tests indicate that the evaluation results of the monthly mean AODs are quite sensitive to the relative humidity (RH) fields used by PMCAMx, but are not sensitive to the simulated size distribution and the black carbon mixing state. The screening of the satellite retrievals for periods with high dust (or coarse particles in general) concentrations as well as the combination of the MODIS and AERONET datasets lead to more robust conclusions about the ability of the model to simulate the secondary aerosol components that dominate the AOD during this period.

AB - The ability of chemical transport model (CTM) PMCAMx to reproduce aerosol optical depth (AOD) measurements by the Aerosol Robotic Network (AERONET) and the Moderate Resolution Imaging Spectroradiometer (MODIS) over Europe during the photochemically active period of May 2008 (EUCAARI campaign) is evaluated. Periods with high dust or sea-salt levels are excluded, so the analysis focuses on the ability of the model to simulate the mostly secondary aerosol and its interactions with water. PMCAMx reproduces the monthly mean MODIS and AERONET AOD values over the Iberian Peninsula, the British Isles, central Europe, and Russia with a fractional bias of less than 15% and a fractional error of less than 30 %. However, the model overestimates the AOD over northern Europe, most probably due to an overestimation of organic aerosol and sulfates. At the other end, PMCAMx underestimates the monthly mean MODIS AOD over the Balkans, the Mediterranean, and the South Atlantic. These errors appear to be related to an underestimation of sulfates. Sensitivity tests indicate that the evaluation results of the monthly mean AODs are quite sensitive to the relative humidity (RH) fields used by PMCAMx, but are not sensitive to the simulated size distribution and the black carbon mixing state. The screening of the satellite retrievals for periods with high dust (or coarse particles in general) concentrations as well as the combination of the MODIS and AERONET datasets lead to more robust conclusions about the ability of the model to simulate the secondary aerosol components that dominate the AOD during this period.

UR - http://www.scopus.com/inward/record.url?scp=84998655073&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84998655073&partnerID=8YFLogxK

U2 - 10.5194/gmd-9-4257-2016

DO - 10.5194/gmd-9-4257-2016

M3 - Article

VL - 9

SP - 4257

EP - 4272

JO - Geoscientific Model Development

JF - Geoscientific Model Development

SN - 1991-959X

IS - 11

ER -