Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure

M. Komppula; T. Mielonen; A. Arola; K. Korhonen; H. Lihavainen; A. -P. Hyvarinen; H. Baars; R. Engelmann; D. Althausen; A. Ansmann; D. Mueller; T. S. Panwar; R. K. Hooda; V. P. Sharma; V. -M. Kerminen; K. E. J. Lehtinen; Y. Viisanen

doi:10.5194/acp-12-4513-2012

Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure

M. Komppula, T. Mielonen, A. Arola, K. Korhonen, H. Lihavainen, A. -P. Hyvarinen, H. Baars, R. Engelmann, D. Althausen, A. Ansmann, D. Mueller, T. S. Panwar, R. K. Hooda, V. P. Sharma, V. -M. Kerminen, K. E. J. Lehtinen, Y. Viisanen

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Abstract

One year of multi-wavelength (3 backscatter + 2 extinction + 1 depolarization) Raman lidar measurements at Gual Pahari, close to New Delhi, were analysed. The data was split into four seasons: spring (March-May), summer (June-August), autumn (September-November) and winter (December-February). The vertical profiles of backscatter, extinction, and lidar ratio and their variability during each season are presented. The measurements revealed that, on average, the aerosol layer was at its highest in spring (5.5 km). In summer, the vertically averaged (between 1-3 km) backscatter and extinction coefficients had the highest averages (3.3 Mm(-1) sr(-1) and 142 Mm(-1) at 532 nm, respectively). Aerosol concentrations were slightly higher in summer compared to other seasons, and particles were larger in size. The autumn showed the highest lidar ratio and high extinction-related Angstrom exponents (AE(ext)), indicating the presence of smaller probably absorbing particles. The winter had the lowest backscatter and extinction coefficients, but AE(ext) was the highest, suggesting still a large amount of small particles.

Original language	English
Pages (from-to)	4513-4524
Number of pages	12
Journal	Atmospheric Chemistry and Physics
Volume	12
Issue number	10
DOIs	https://doi.org/10.5194/acp-12-4513-2012
Publication status	Published - 2012

Keywords

SULFUR-DIOXIDE EMISSIONS
OPTICAL-PROPERTIES
QUALITY INTERACTIONS EUCAARI
PHYSICAL PARTICLE PROPERTIES
CLOUD CLIMATE
AIRBORNE LIDAR
6-WAVELENGTH LIDAR
GLOBAL SCALES
OCEAN EXPERIMENT
EUROPEAN INTEGRATED PROJECT

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© Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License
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Komppula, M., Mielonen, T., Arola, A., Korhonen, K., Lihavainen, H., Hyvarinen, A. .-P., Baars, H., Engelmann, R., Althausen, D., Ansmann, A., Mueller, D., Panwar, T. S., Hooda, R. K., Sharma, V. P., Kerminen, V. .-M., Lehtinen, K. E. J., & Viisanen, Y. (2012). Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure. Atmospheric Chemistry and Physics, 12(10), 4513-4524. https://doi.org/10.5194/acp-12-4513-2012

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title = "Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure",

abstract = "One year of multi-wavelength (3 backscatter + 2 extinction + 1 depolarization) Raman lidar measurements at Gual Pahari, close to New Delhi, were analysed. The data was split into four seasons: spring (March-May), summer (June-August), autumn (September-November) and winter (December-February). The vertical profiles of backscatter, extinction, and lidar ratio and their variability during each season are presented. The measurements revealed that, on average, the aerosol layer was at its highest in spring (5.5 km). In summer, the vertically averaged (between 1-3 km) backscatter and extinction coefficients had the highest averages (3.3 Mm(-1) sr(-1) and 142 Mm(-1) at 532 nm, respectively). Aerosol concentrations were slightly higher in summer compared to other seasons, and particles were larger in size. The autumn showed the highest lidar ratio and high extinction-related Angstrom exponents (AE(ext)), indicating the presence of smaller probably absorbing particles. The winter had the lowest backscatter and extinction coefficients, but AE(ext) was the highest, suggesting still a large amount of small particles.",

keywords = "SULFUR-DIOXIDE EMISSIONS, OPTICAL-PROPERTIES, QUALITY INTERACTIONS EUCAARI, PHYSICAL PARTICLE PROPERTIES, CLOUD CLIMATE, AIRBORNE LIDAR, 6-WAVELENGTH LIDAR, GLOBAL SCALES, OCEAN EXPERIMENT, EUROPEAN INTEGRATED PROJECT",

author = "M. Komppula and T. Mielonen and A. Arola and K. Korhonen and H. Lihavainen and Hyvarinen, {A. -P.} and H. Baars and R. Engelmann and D. Althausen and A. Ansmann and D. Mueller and Panwar, {T. S.} and Hooda, {R. K.} and Sharma, {V. P.} and Kerminen, {V. -M.} and Lehtinen, {K. E. J.} and Y. Viisanen",

note = "{\textcopyright} Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License",

year = "2012",

doi = "10.5194/acp-12-4513-2012",

language = "English",

volume = "12",

pages = "4513--4524",

journal = "Atmospheric Chemistry and Physics",

issn = "1680-7316",

publisher = "European Geosciences Union",

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Komppula, M, Mielonen, T, Arola, A, Korhonen, K, Lihavainen, H, Hyvarinen, A-P, Baars, H, Engelmann, R, Althausen, D, Ansmann, A, Mueller, D, Panwar, TS, Hooda, RK, Sharma, VP, Kerminen, V-M, Lehtinen, KEJ & Viisanen, Y 2012, 'Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure', Atmospheric Chemistry and Physics, vol. 12, no. 10, pp. 4513-4524. https://doi.org/10.5194/acp-12-4513-2012

TY - JOUR

T1 - Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure

AU - Komppula, M.

AU - Mielonen, T.

AU - Arola, A.

AU - Korhonen, K.

AU - Lihavainen, H.

AU - Hyvarinen, A. -P.

AU - Baars, H.

AU - Engelmann, R.

AU - Althausen, D.

AU - Ansmann, A.

AU - Mueller, D.

AU - Panwar, T. S.

AU - Hooda, R. K.

AU - Sharma, V. P.

AU - Kerminen, V. -M.

AU - Lehtinen, K. E. J.

AU - Viisanen, Y.

N1 - © Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License

PY - 2012

Y1 - 2012

N2 - One year of multi-wavelength (3 backscatter + 2 extinction + 1 depolarization) Raman lidar measurements at Gual Pahari, close to New Delhi, were analysed. The data was split into four seasons: spring (March-May), summer (June-August), autumn (September-November) and winter (December-February). The vertical profiles of backscatter, extinction, and lidar ratio and their variability during each season are presented. The measurements revealed that, on average, the aerosol layer was at its highest in spring (5.5 km). In summer, the vertically averaged (between 1-3 km) backscatter and extinction coefficients had the highest averages (3.3 Mm(-1) sr(-1) and 142 Mm(-1) at 532 nm, respectively). Aerosol concentrations were slightly higher in summer compared to other seasons, and particles were larger in size. The autumn showed the highest lidar ratio and high extinction-related Angstrom exponents (AE(ext)), indicating the presence of smaller probably absorbing particles. The winter had the lowest backscatter and extinction coefficients, but AE(ext) was the highest, suggesting still a large amount of small particles.

AB - One year of multi-wavelength (3 backscatter + 2 extinction + 1 depolarization) Raman lidar measurements at Gual Pahari, close to New Delhi, were analysed. The data was split into four seasons: spring (March-May), summer (June-August), autumn (September-November) and winter (December-February). The vertical profiles of backscatter, extinction, and lidar ratio and their variability during each season are presented. The measurements revealed that, on average, the aerosol layer was at its highest in spring (5.5 km). In summer, the vertically averaged (between 1-3 km) backscatter and extinction coefficients had the highest averages (3.3 Mm(-1) sr(-1) and 142 Mm(-1) at 532 nm, respectively). Aerosol concentrations were slightly higher in summer compared to other seasons, and particles were larger in size. The autumn showed the highest lidar ratio and high extinction-related Angstrom exponents (AE(ext)), indicating the presence of smaller probably absorbing particles. The winter had the lowest backscatter and extinction coefficients, but AE(ext) was the highest, suggesting still a large amount of small particles.

KW - SULFUR-DIOXIDE EMISSIONS

KW - OPTICAL-PROPERTIES

KW - QUALITY INTERACTIONS EUCAARI

KW - PHYSICAL PARTICLE PROPERTIES

KW - CLOUD CLIMATE

KW - AIRBORNE LIDAR

KW - 6-WAVELENGTH LIDAR

KW - GLOBAL SCALES

KW - OCEAN EXPERIMENT

KW - EUROPEAN INTEGRATED PROJECT

U2 - 10.5194/acp-12-4513-2012

DO - 10.5194/acp-12-4513-2012

M3 - Article

SN - 1680-7316

VL - 12

SP - 4513

EP - 4524

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

IS - 10

ER -

Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure

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