CV Laura Rontu

Title Senior scientist

Postal address Finnish Meteorological Institute, Meteorological Research, Box 503, 00101 Helsinki

Street address Finnish Meteorological Institute, Meteorological Research, Erik Palmenin aukio 1, 00560 Helsinki

Phone number +35850 3626011

Fields of expertise

  • Numerical weather prediction

Projects

  • http://hirlam.org

University and other degrees

  • Phil.Doc. 2007, University of Helsinki, Finland. Thesis: Studies on orographic effects in a numerical weather prediction model. Finnish Meteorological Institute Contributions No. 63.
  • Phil.Lic. 1986, University of Helsinki, Finland. Thesis: A study of finete-amplitude mountain waves using a stationary model.
  • M.Sc. 1980, University of Helsinki, Finland.

Previous professional appointments

  • Member of international HIRLAM project management group (physical parametrizations) 2005, 2011-2015
  • Head of the FMI NWP group 1.1.1997-30.6.2001
  • Senior scientist, Finnish Meteorological Institute in Weather research (numerical modelling) 1989 - 1997.
  • Meteorologist, Finnish Meteorological Institute at Helsinki-Vantaa airport, 1985 - 1987.
  • Research assistant, Academy of Finland/Department of Meteorology, University of Helsinki, 1978-1981 (total ca. 25 months).

List of publications

Bengtsson L, Andrae U, Asplien T, Batrak Y, Calvo J, de Rooy W, Gleeson E,
Hansen-Sass B, Homleid M, Hortal M, Ivarsson K-I, Lenderink G, Niemelä S,
Pagh Nielsen K, Onvlee J, Rontu L, Samuelsson P, Santos Munoz D, Subias A,
Tijm S, Toll V, Yang X, Odegaard Koltzow M. , 2017. The HARMONIE-AROME Model Configuration in the ALADIN-HIRLAM NWP system. Mon. Wea. Rev, 145, 1919-1935, doi: 10.1175/MWR-D-16-0417.1

Cheng B, Vihma T, Rontu L, Kontu A, Kheyrollah Pour H, Duguay C, Pulliainen J, 2014. Evolution of snow and ice temperature, thickness and energy balance in Lake Orajärvi, northern Finland. Tellus A 2014, 66, 21564, doi: 10.3402/tellusa.v66.21564

Cheng B, Mäkynen M, Similä M, Rontu L, Vihma T, 2013. Modelling snow and ice thickness in the coastal Kara Sea, Russian Arctic. ANNALS OF GLACIOLOGY Vol. 54 p. 105-113. doi: 10.3189/2013AoG62A180

Eerola, K., Rontu, L., Kourzeneva, E., Kheyrollah-Pour, H., Duguay, C., 2014. Impact of partly ice-free Lake Ladoga on temperature and cloudiness in an anticyclonic winter situation – a case study using  a limited area model. Tellus Series A-dynamic Meteorology and Oceanography Vol. 66. doi: 10.3402/tellusa.v66.23929

Eerola, K., Rontu, L., Kourzeneva, E. and Shcherbak, E. 2010. A study on effects of lake temperature and ice cover in HIRLAM. Boreal Env. Res. 15, 130–142.

Gleeson E, Toll V, Nielsen K.P., Rontu L, Masek J, 2016. Effects of aerosols on clear-sky solar radiation in the ALADIN-HIRLAM NWP system. Atmos. Chem. Phys., 16, 5933-5948, 2016 http://www.atmos-chem-phys.net/16/5933/2016/ doi:10.5194/acp-16-5933-2016

Holopainen E.O, L. Rontu L. and N.-C. Lau, 1982. The effect of large-scale transient eddies in the time-mean flow in the atmosphere. J. Atmos. Sci., 39, 1972-1984. doi:http://dx.doi.org/10.1175/1520-0469(1982)039<1972:TEOLST>2.0.CO;2

Holopainen E.O and L. Rontu, 1981. On shear lines in the upper troposphere over Europe. Tellus, 33, 351-369.DOI: 10.1111/j.2153-3490.1981.tb01757.x

Kangas M, Rontu L, Fortelius C, Aurela M, Poikonen A, 2016. Weather model verification using Sodankylä mast measurements. Geosci. Instrum. Method. Data Syst., 5, 75?84, 2016, doi:10.5194/gi-5-75-2016. www.geosci-instrum-method-data-syst.net/5/75/2016/

Kheyrollah Pour, H., Rontu L., Duguay, C., Eerola K., Kourzeneva E., 2014. Impact of satellite-based lake surface observations on the initial state of HIRLAM. Part II: Analysis of lake surface temperature and ice cover. Tellus A 2014, 66, 21395, http://dx.doi.org/10.3402/tellusa.v66.21395.

Kheyrollah Pour H, Choulga M, Eerola K, Kurzeneva E, Rontu L, Pan F,
Duguay C R, 2017. Towards improved objective analysis of lake surface water temperature in a NWP model: preliminary assessment of statistical properties
Tellus A 69. DOI:10.1080/16000870.2017.1313025

Mironov D, Rontu L, Kourzeneva E, Terzhevik A, 2010. Towards improved representation of lakes in numerical weather prediction and climate models: Introduction to the special issue of Boreal Environment. Research Boreal Env. Res. 15: 97-99

Nielsen K.P, Gleeson E, Rontu L, 2014. Radiation sensitivity tests of the HARMONIE 37h1 NWP model. Geosci. Model Dev., 7, 1433-1449, doi:10.5194/gmd-7-1433-2014.

Rontu L., 2006. Vorticity budget over mountains, estimated from HIRLAM analyses and forecasts. Met.Z.,15,199-206.

Rontu L., 2006. A study on parametrization of orography-related momentum fluxes in a synoptic-scale NWP model. Tellus, 58A, 68-81.

Rontu L, Eerola K, Kourzeneva E, Vehvilainen B, 2012. Data assimilation and parametrisation of lakes in HIRLAM. TELLUS SERIES A - DYNAMIC METEOROLOGY AND OCEANOGRAPHY, Vol. 64. doi: 10.3402/tellusa.v64i0.17611

Rontu L, Gleeson E, Räisänen P, Nielsen K P, Savijärvi H, Sass B H
The HIRLAM fast radiation scheme for mesoscale numerical weather
prediction models, 2017. Adv. Sci. Res., 14, 195-215, https://doi.org/10.5194/asr-14-195-2017

Rontu L., F. Obleitner, S. Gollvik, C. Zingerle, S. Tijm, 2009. HIRLAM experiments on surface energy balance accross Vatnajökull. Meteorol. Atmos. Phys 103, 67-77.

Rontu L., K. Sattler and R. Sigg, 2002. Parametrization of subgrid-scale orography effects in HIRLAM. HIRLAM Technical report, 56, 59 pp.

Rontu L, Wastl C, Niemelä S, 2016. Influence of the details of topography on weather forecast - evaluation of HARMONIE experiments in the Sochi Olympics domain over the Caucasian mountains. Frontiers in Earth Science, 4, Feb 2016, 16 pp. http://dx.doi.org/10.3389/feart.2016.00013

Sass B.H., L. Rontu L. and P. Räisänen, 1994. HIRLAM-2 radiation scheme: documentation and tests. HIRLAM technical report N:o 16, 43pp.

Semmler T, Cheng B, Yang Y, Rontu L, 2012. Snow and ice on Bear Lake (Alaska) - sensitivity experiments with two lake ice models. TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY Vol. 64. doi: 10.3402/tellusa.v64i0.17339

Senkova A.S., L. Rontu and H. Savijärvi, 2007. Parametrization of orographic effects on surface radiation in HIRLAM. Tellus 59A, 279-291.

Toll V, Gleeson E, Nielsen K.P, Mannik A, Masek J, Rontu L, Post P, 2016. Impacts of the direct radiative effect of aerosols in numerical weather prediction over Europe using the ALADIN-HIRLAM NWP system Atmos. Res., 172, 163-173. doi:10.1016/j.atmosres.2016.01.003

Venäläinen A., L. Rontu and R. Solantie, 1999. On the influence of peatland draining on local climate. Boreal Env.Res., 4, 89-100.

Wyser K., L. Rontu and H. Savijärvi, 1999. Introducing the effective radius into a fast radiation scheme of a mesoscale model. Contr.Atm.Phys, 72, 205-218.

Yang Y, Cheng B, Kourzeneva E, Semmler T, Rontu L, Leppäranta M, Shirasawa K, Li Z., 2013. Modelling experiments on air snow ice interactions over Kilpisjarvi, a lake in northern Finland. BOREAL ENVIRONMENT RESEARCH Vol. 18 p. 341-358.

Apurahat/Major stipendiary support for research
State stipendium of the Soviet Union for postgraduate studies at the department of Atmospheric Physics, Moscow State University, 1981-1983 (24 months).


Muut taidot/Other qualifications
Languages: Finnish, English, Russian (authorized translator from Russian to Finnish), Swedish, (Spanish)