World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Observing Wind, Aerosol Particles, Cloud and Precipitation: Finland's New Ground-based Remote-sensing Network : Volume 6, Issue 4 (08/08/2013)

By Hirsikko, A.

Click here to view

Book Id: WPLBN0003999947
Format Type: PDF Article :
File Size: Pages 63
Reproduction Date: 2015

Title: Observing Wind, Aerosol Particles, Cloud and Precipitation: Finland's New Ground-based Remote-sensing Network : Volume 6, Issue 4 (08/08/2013)  
Author: Hirsikko, A.
Volume: Vol. 6, Issue 4
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Komppula, M., Korhonen, K., Moisseev, D., Kurri, M., Aaltonen, V., Lonka, H.,...Kulmala, M. (2013). Observing Wind, Aerosol Particles, Cloud and Precipitation: Finland's New Ground-based Remote-sensing Network : Volume 6, Issue 4 (08/08/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Finnish Meteorological Institute, P.O. BOX 503, 00101, Helsinki, Finland. The Finnish Meteorological Institute, in collaboration with the University of Helsinki, has established a new ground-based remote-sensing network in Finland. The network consists of five topographically, ecologically and climatically different sites distributed from southern to northern Finland. The main goal of the network is to monitor air pollution and boundary layer properties in near real time, with a Doppler lidar and ceilometer at each site. In addition to these operational tasks, two sites are members of the Aerosols, Clouds, and Trace gases Research InfraStructure Network (ACTRIS); a Ka-band Doppler cloud radar at Sodankylä will provide cloud retrievals within CloudNet, and a multi-wavelength Raman lidar, POLLYXT (POrtabLe Lidar sYstem eXTended), in Kuopio provides optical and microphysical aerosol properties through EARLINET (European Aerosol Research Lidar Network to Establish an Aerosol Climatology). Three C-band weather radars are located in the Helsinki metropolitan area and are deployed for operational and research applications. We carried out two inter-comparison campaigns to investigate the Doppler lidar performance. The aims of the campaigns were to compare the backscatter coefficient and retrieved wind profiles, and to optimise the lidar sensitivity through adjusting the telescope focus and data-integration time to ensure enough signals in low-aerosol-content environments. The wind profiles showed good agreement between different lidars. However, due to inaccurate telescope focus setting and varying receiver sensitivity, backscatter coefficient profiles showed disagreement between the lidars. Harsh Finnish winters could pose problems, but, due to the built-in heating systems, low ambient temperatures had no, or only a minor, impact on the lidar operation: including scanning-head motion. However, accumulation of snow and ice on the lens has been observed, which can lead to formation of a water/ice layer thus attenuating the signal inconsistently. Thus, care must be taken to ensure continuous snow removal.

Summary
Observing wind, aerosol particles, cloud and precipitation: Finland's new ground-based remote-sensing network

Excerpt
Kulmala, M., Hämeri, K., Aalto, P. P., Mäkelä, J. M., Pirjola, L., Nilsson, E. D., Buzorius, G., Rannik, Ü., Dal Maso, M., Seidl, W., Hoffman, T., Janson, R., Hansson, H.-C., Viisanen, Y., Laaksonen, A., and O'Dowd, C. D.: Overview of the international project on biogenic aerosol formation in the boreal forest (BIOFOR), Tellus B, 53, 324–343, 2001.; Laitinen, T., Ehn, M., Junninen, H., Ruiz-Jimenez, J., Prshintsev, J., Hartonen, K., Riekkola, M.-L., Worsnop, D. R., and Kulmala, M.: Characterization of organic compounds in 10- to 50-nm aerosol particles in boreal forest with laser desorption-ionization aerosol mass spectrometer and comparison with other techniques, Atmos. Environ., 45, 3711–3719, 2011.; Lane, S. E., Barlow, J. F., and Wood, C. R.: An assessment of a three-beam Doppler lidar wind profiling method for use in urban areas, J. Wind Eng. Ind. Aerod., 119, 53–59, 2013.; Launiainen, S.: Seasonal and inter-annual variability of energy exchange above a boreal Scots pine forest, Biogeosciences, 7, 3921–3940, <a href=http://dx.doi.org/10.5194/bg-7-3921-2010>doi:10.5194/bg-7-3921-2010, 2010.; Leskinen, A., Portin, H., Komppula, M., Miettinen, P., Arola, A., Lihavainen, H., Hatakka, J., Laaksonen, A., and Lehtinen, K. E. J.: Overview of the research activities and results at Puijo semi-urban measurement station, Boreal Environ. Res., 14, 576–590, 2009.; Leskinen, A., Arola, A., Komppula, M., Portin, H., Tiitta, P., Miettinen, P., Romakkaniemi, S., Laaksonen, A., and Lehtinen, K. E. J.: Seasonal cycle and source analyses of aerosol optical properties in a semi-urban environment at Puijo station in Eastern Finland, Atmos. Chem. Phys., 12, 5647–5659, <a href=http://dx.doi.org/10.5194/acp-12-5647-2012>doi:10.5194/acp-12-5647-2012, 2012.; Leskinen, M., Markkula, I., Koistinen, J., Pylkkö, P., Ooperi, S., Siljamo, P., Ojanen, H., Raiskio, S., and Tiilikkala, K.: Pest insect immigration warning by an atmospheric dispersion model, weather radars and traps, J. Appl. Entoml., 135, 55–67, 2011.; Lihavainen, H., Kerminen, V.-M., and Remer, L. A.: Aerosol-cloud interaction determined by both in situ and satellite data over a northern high-latitude site, Atmos. Chem., 10, 10987–10995, 2010.; Lohmann, U. and Feichter, J.: Global indirect aerosol effects: a review, Atmos. Chem. Phys., 5, 715–737, <a href=http://dx.doi.org/10.5194/acp-5-715-2005>doi:10.5194/acp-5-715-2005, 2005.; Lohmann, U., Rotstayn, L., Storelvmo, T., Jones, A., Menon, S., Quaas, J., Ekman, A. M. L., Koch, D., and Ruedy, R.: Total aerosol effect: radiative forcing or radiative flux perturbation?, Atmos. Chem. Phys., 10, 3235–3246, <a href=http://dx.doi.org/10.5194/acp-10-3235-2010>doi:10.5194/acp-10-3235-2010, 2010.; Madonna, F., Amodeo, A., Boselli, A., Cornacchia, C., Cuomo, V., D'Amico, G., Giunta, A., Mona, L., and Pappalardo, G.: CIAO: the CNR-IMAA advanced observatory for atmospheric research, Atmos. Meas. Tech., 4, 1191–1208, <a href=http://dx.doi.org/10.5194/amt-4-1191-2011>doi:10.5194/amt-4-1191-2011, 2011.; Makkonen, R., Asmi, A., Kerminen, V.-M., Boy, M., Arneth, A., Hari, P., and Kulmala, M.: Air pollution control and decreasing new particle formation lead to strong climate warming, Atmos. Chem. Phys., 12, 1515–1524, <a href=http://dx.doi.org/10.5194/acp-12-1515-2012>doi:10.5194/acp-12-1515-2012, 2012.; Manninen, H. E., Petäjä, T., Asmi, E., Riipinen, I., Nieminen, T., Mikkilä, J., Hõrrak, U., Mirme, A., Mirme, S., Laakso, L., Kerminen, V.-M., and Kulmala, V.-M.: Long-term field measurements of charged and neutral clousters using Neutral cluster and Air Ion Spectrometer (NAIS), Boreal Environ. Res., 14, 591–605, 2009.; Marinoni, A., Laj, P., Sellegri, K., and Mailhot, G.: Cloud chemistry at the Puy de Dôme: variability and relationships with environmental factors, Atmos. Chem. Phys., 4, 715–728, <a href=http://dx.doi.org/10.5194/acp-4-715-2004>doi:10.5194/acp


 

Click To View

Additional Books


  • Methane Emission Estimates Using Chamber... (by )
  • Volcanic Ash Detection with Infrared Lim... (by )
  • Development of a New Data-processing Met... (by )
  • Cloud Retrievals from Satellite Data Usi... (by )
  • An Empirical Model of Optical and Radiat... (by )
  • Assessment of Bsrn Radiation Records for... (by )
  • Inter-calibration of Polar Imager Solar ... (by )
  • Max-doas Observations of the Total Atmos... (by )
  • Sensitivity of Dobson and Brewer Umkehr ... (by )
  • Measurement of Carbonaceous Aerosol with... (by )
  • Effective Density of Aquadag and Fullere... (by )
  • Validation of the Poke-flow Technique Co... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.