Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Laura Rontu"'
Publikováno v:
Meteorology, Vol 3, Iss 2, Pp 161-190 (2024)
Near real-time aerosol fields from the Copernicus Atmospheric Monitoring Services (CAMS), operated by the European Centre for Medium-Range Weather Forecasts (ECMWF), are configured for use in the HARMONIE-AROME Numerical Weather Prediction model. Aer
Externí odkaz:
https://doaj.org/article/0068f0b8d1a94badba76fe84934843c3
Autor:
Outi Meinander, Rostislav Kouznetsov, Andreas Uppstu, Mikhail Sofiev, Anu Kaakinen, Johanna Salminen, Laura Rontu, André Welti, Diana Francis, Ana A. Piedehierro, Pasi Heikkilä, Enna Heikkinen, Ari Laaksonen
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-20 (2023)
Abstract African desert dust is emitted and long-range transported with multiple effects on climate, air quality, cryosphere, and ecosystems. On 21–23 February 2021, dust from a sand and dust storm in northern Africa was transported to Finland, nor
Externí odkaz:
https://doaj.org/article/053cbc516f824eac8a6b455fbd238850
Sensitivity of Radiative Fluxes to Aerosols in the ALADIN-HIRLAM Numerical Weather Prediction System
Publikováno v:
Atmosphere, Vol 11, Iss 2, p 205 (2020)
The direct radiative effect of aerosols is taken into account in many limited-area numerical weather prediction models using wavelength-dependent aerosol optical depths of a range of aerosol species. We studied the impact of aerosol distribution and
Externí odkaz:
https://doaj.org/article/f92b08f4e2ca469f80b638d84cf46518
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 66, Iss 0, Pp 1-17 (2014)
At the end of January 2012, a low-level cloud from partly ice-free Lake Ladoga caused very variable 2-m temperatures in Eastern Finland. The sensitivity of the High Resolution Limited Area Model (HIRLAM) to the lake surface conditions was tested in t
Externí odkaz:
https://doaj.org/article/57d2a994ef944716bed3652cd8611b67
Autor:
Homa Kheyrollah Pour, Margarita Choulga, Kalle Eerola, Ekaterina Kourzeneva, Laura Rontu, Feng Pan, Claude R. Duguay
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 69, Iss 1 (2017)
Information about the statistical structure of the lake surface water temperature (LSWT) field is needed for assimilation of lake observations into Numerical Weather Prediction (NWP) models, to describe the lake surface state at each grid-point conta
Externí odkaz:
https://doaj.org/article/57ff287064194aa1b96d1e8c2b037e9b
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 66, Iss 0, Pp 1-18 (2014)
This paper presents results from a study on the impact of remote-sensing Lake Surface Water Temperature (LSWT) observations in the analysis of lake surface state of a numerical weather prediction (NWP) model. Data assimilation experiments were perfor
Externí odkaz:
https://doaj.org/article/3884b7a359f046cabf5117379cd25647
Autor:
Bin Cheng, Timo Vihma, Laura Rontu, Anna Kontu, Homa Kheyrollah Pour, Claude Duguay, Jouni Pulliainen
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 66, Iss 0, Pp 1-20 (2014)
The seasonal evolution of snow and ice on Lake Orajärvi, northern Finland, was investigated for three consecutive winter seasons. Material consisting of numerical weather prediction model (HIRLAM) output, weather station observations, manual snow an
Externí odkaz:
https://doaj.org/article/1b468f34a8ef4c2296b4874ddf16aa06
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 64, Iss 0, Pp 1-14 (2012)
Snow and ice thermodynamics of Bear Lake (Alaska) are investigated with a simple freshwater lake model (FLake) and a more complex snow and ice thermodynamic model (HIGHTSI). A number of sensitivity experiments have been carried out to investigate the
Externí odkaz:
https://doaj.org/article/19aea6731b6d4cba9e5144edaca88f14
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 64, Iss 0, Pp 1-12 (2012)
When the resolution of numerical weather prediction (NWP) and climate models increases, it becomes more and more important to correctly account for the lake–atmosphere interactions. One possible way to handle lake effects is to use a lake model, wh
Externí odkaz:
https://doaj.org/article/d90df6222811446381dae302b3695f86
Autor:
Laura Rontu
Publikováno v:
Meteorologische Zeitschrift, Vol 15, Iss 2, Pp 199-206 (2006)
The analysis of vorticity budgets offers a possibility for validation and diagnosis of a NWP model. The source terms of the equation are related to the resolved and subgrid-scale torque due to the orography and surface properties. In this study, the
Externí odkaz:
https://doaj.org/article/68f2fef64d444cbb9fa817cf63e53f16