Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Juha Tonttila"'
Autor:
Alexander Mahura, Alexander Baklanov, Risto Makkonen, Michael Boy, Tuukka Petäjä, Hanna K. Lappalainen, Roman Nuterman, Veli-Matti Kerminen, Stephen R. Arnold, Markus Jochum, Anatoly Shvidenko, Igor Esau, Mikhail Sofiev, Andreas Stohl, Tuula Aalto, Jianhui Bai, Chuchu Chen, Yafang Cheng, Oxana Drofa, Mei Huang, Leena Järvi, Harri Kokkola, Rostislav Kouznetsov, Tingting Li, Piero Malguzzi, Sarah Monks, Mads Bruun Poulsen, Steffen M. Noe, Yuliia Palamarchuk, Benjamin Foreback, Petri Clusius, Till Andreas Soya Rasmussen, Jun She, Jens Havskov Sørensen, Dominick Spracklen, Hang Su, Juha Tonttila, Siwen Wang, Jiandong Wang, Tobias Wolf-Grosse, Yongqiang Yu, Qing Zhang, Wei Zhang, Wen Zhang, Xunhua Zheng, Siqi Li, Yong Li, Putian Zhou, Markku Kulmala
Publikováno v:
Big Earth Data, Vol 8, Iss 2, Pp 189-230 (2024)
The Pan-Eurasian Experiment Modelling Platform (PEEX-MP) is one of the key blocks of the PEEX Research Programme. The PEEX MP has more than 30 models and is directed towards seamless environmental prediction. The main focus area is the Arctic-boreal
Externí odkaz:
https://doaj.org/article/641ddf799cf24b4b9ee153c8267ab48e
Autor:
Taina Yli-Juuti, Tero Mielonen, Liine Heikkinen, Antti Arola, Mikael Ehn, Sini Isokääntä, Helmi-Marja Keskinen, Markku Kulmala, Anton Laakso, Antti Lipponen, Krista Luoma, Santtu Mikkonen, Tuomo Nieminen, Pauli Paasonen, Tuukka Petäjä, Sami Romakkaniemi, Juha Tonttila, Harri Kokkola, Annele Virtanen
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Vegetation emits organic vapors which can form aerosols in the atmosphere and influence cloud properties. Here, the authors show observational evidence that warmer temperatures lead to increased emissions of these aerosols in boreal forests which cau
Externí odkaz:
https://doaj.org/article/436163c858364067ab09c95b56aad6fd
Autor:
Juha Tonttila, Anniina Korpinen, Harri Kokkola, Sami Romakkaniemi, Carl Fortelius, Hannele Korhonen
Publikováno v:
Journal of Applied Meteorology and Climatology. 61:1533-1547
Intentional release of hygroscopic particles, or seeding, in convective clouds is one of the postulated methods to artificially enhance rainfall. Motivated by the general uncertainty in the underlying physics, this work employs a large-eddy simulatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb6829da840ef0aebd47a9c25f042fe3
https://doi.org/10.1175/jamc-d-21-0183.1
https://doi.org/10.1175/jamc-d-21-0183.1
Autor:
Kalle Nordling, Jukka-Pekka Keskinen, Sami Romakkaniemi, Harri Kokkola, Petri Räisänen, Antti Lipponen, Antti-Ilari Partanen, Jaakko Ahola, Juha Tonttila, Muzaffer Ege Alper, Hannele Korhonen, Tomi Raatikainen
Publikováno v:
eISSN
Here we present for the first time a proof of concept for an emulation-based method that uses a large-eddy simulations (LES) to present sub-grid cloud processes in a general circulation model (GCM). We focus on two key variables affecting the propert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::537f841b6ed9c05497c8f33160fe49dc
https://egusphere.copernicus.org/preprints/2023/egusphere-2023-912/
https://egusphere.copernicus.org/preprints/2023/egusphere-2023-912/
Autor:
Pingqing Fu, Zifa Wang, Juha Tonttila, Yele Sun, Weiqi Xu, Hugh Coe, Gordon McFiggans, Sami Romakkaniemi, Jessica Slater
Publikováno v:
Faraday Discussions. 226:173-190
Haze episodes, characterised by extremely high aerosol concentrations and a reduction in visibility to less than 10 km, are a frequent occurrence in wintertime Beijing, despite policy interventions leading to an overall improvement in average annual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5d24fe36b71600772e89afae43597f0
https://doi.org/10.1039/d0fd00085j
https://doi.org/10.1039/d0fd00085j
Autor:
Silvia Margarita Calderón, Juha Tonttila, Angela Buchholz, Jorma Joutsensaari, Mika Komppula, Ari Leskinen, Liqing Hao, Dmitri Moisseev, Iida Pullinen, Petri Tiitta, Jian Xu, Annele Virtanen, Harri Kokkola, Sami Romakkaniemi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1555516ca2ba0d255a480c802d558f1f
https://doi.org/10.5194/acp-2022-273-supplement
https://doi.org/10.5194/acp-2022-273-supplement
The so-called autoconversion is a key numerical process used to describe the coalescence growth of cloud droplets to drizzle and rain in atmospheric models. Together with further growth of drizzle through accretion, these processes are typically repr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48e68a92101ed9bb66a90a65606d94df
https://doi.org/10.5194/egusphere-egu22-7676
https://doi.org/10.5194/egusphere-egu22-7676
Autor:
Silvia M. Calderón, Juha Tonttila, Angela Buchholz, Jorma Joutsensaari, Mika Komppula, Ari Leskinen, Hao Liqing, Dmitri Moisseev, Petri Tiitta, Annele Virtanen, Harri Kokkola, Sami Romakkaniemi
We carried out a closure study of aerosol-cloud interactions during stratocumulus formation using a large eddy simulation model UCLALES-SALSA and in situ observations from the 2020 sampling campaign at the Puijo SMEAR IV station in Kuopio, Finland. U
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01271e2dcf7670238bf18037b19961d6
https://doi.org/10.5194/egusphere-egu22-8212
https://doi.org/10.5194/egusphere-egu22-8212
Biogenic secondary organic aerosol (BSOA) constitutes a major fraction of aerosol over boreal forests. As the emissions of BSOA precursors are temperature dependent, changes in temperature are likely to have substantial implications on regional aeros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11c98cb869d5ec2b1e7569a6230d37c4
https://doi.org/10.5194/egusphere-egu22-6286
https://doi.org/10.5194/egusphere-egu22-6286
Autor:
Alejandro Baró Pérez, Annica Ekman, Matthias Schwarz, Julien Savre, Frida Bender, Abhay Devasthale, Juha Tonttila, Harri Kokkola
Biomass-burning aerosol layers overlaying stratocumulus clouds are frequent over the Southeast Atlantic during the southern African fire season (June-October). This scenario can trigger a rich set of aerosol-cloud-radiation interactions with climatic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a29b3c172e6bd9d6d64fc3f7d8075e0
https://doi.org/10.5194/egusphere-egu22-4532
https://doi.org/10.5194/egusphere-egu22-4532