Zobrazeno 1 - 10
of 323
pro vyhledávání: '"Jouni Pulliainen"'
Autor:
Andreas Colliander, Rolf H. Reichle, Wade T. Crow, Michael H. Cosh, Fan Chen, Steven Chan, Narendra Narayan Das, Rajat Bindlish, Julian Chaubell, Seungbum Kim, Qing Liu, Peggy E. O'Neill, R. Scott Dunbar, Land B. Dang, John S. Kimball, Thomas J. Jackson, Hala Khalid Al-Jassar, Jun Asanuma, Bimal K. Bhattacharya, Aaron A. Berg, David D. Bosch, Laura Bourgeau-Chavez, Todd Caldwell, Jean-Christophe Calvet, Chandra Holifield Collins, Karsten H. Jensen, Stan Livingston, Ernesto Lopez-Baeza, Jose Martinez-Fernandez, Heather McNairn, Mahta Moghaddam, Carsten Montzka, Claudia Notarnicola, Thierry Pellarin, Isabella Greimeister-Pfeil, Jouni Pulliainen, Judith Gpe. Ramos, Mark Seyfried, Patrick J. Starks, Zhongbo Su, R. van der Velde, Yijian Zeng, Marc Thibeault, Mariette Vreugdenhil, Jeffrey P. Walker, Mehrez Zribi, Dara Entekhabi, Simon H. Yueh
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 15, Pp 364-392 (2022)
The National Aeronautics and Space Administration Soil Moisture Active Passive (SMAP) mission has been validating its soil moisture (SM) products since the start of data production on March 31, 2015. Prior to launch, the mission defined a set of crit
Externí odkaz:
https://doaj.org/article/d5030cc9a9a147d7ba2994436d585a1c
Autor:
Kari Luojus, Jouni Pulliainen, Matias Takala, Juha Lemmetyinen, Colleen Mortimer, Chris Derksen, Lawrence Mudryk, Mikko Moisander, Mwaba Hiltunen, Tuomo Smolander, Jaakko Ikonen, Juval Cohen, Miia Salminen, Johannes Norberg, Katriina Veijola, Pinja Venäläinen
Publikováno v:
Scientific Data, Vol 8, Iss 1, Pp 1-16 (2021)
Measurement(s) snow • snow mass • snow water equivalent Technology Type(s) satellite imaging Sample Characteristic - Environment cryosphere Sample Characteristic - Location Northern Hemisphere Machine-accessible metadata file describing the repor
Externí odkaz:
https://doaj.org/article/07446af8494c46d3b32cfb4e474fcacc
Autor:
Henna-Reetta Hannula, Jouni Pulliainen
Publikováno v:
Journal of Glaciology, Vol 65, Pp 926-939 (2019)
Spectral reflectance of natural snow samples representing various stratigraphies was investigated in a controlled dark laboratory environment. Mean and Std dev. of band specific reflectance values were determined for several satellite sensor bands ut
Externí odkaz:
https://doaj.org/article/4ee3eefa8d7a4073a6a977e65636af35
Autor:
Lixin Wei, Xiaohua Deng, Bin Cheng, Timo Vihma, Henna-Reetta Hannula, Ting Qin, Jouni Pulliainen
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 68, Iss 0, Pp 1-12 (2016)
Inter-annual variation of meteorological conditions and their effects on snow and ice thickness in an Arctic lake Unari (67.14° N, 25.73° E) were investigated for winters 1980/1981–2012/2013. The lake snow and ice thicknesses were modelled applyi
Externí odkaz:
https://doaj.org/article/e59e76a0051a44f6a92f4cc02471eacd
Autor:
Jorge Jorge Ruiz, Risto Vehmas, Juha Lemmetyinen, Josu Uusitalo, Janne Lahtinen, Kari Lehtinen, Anna Kontu, Kimmo Rautiainen, Riku Tarvainen, Jouni Pulliainen, Jaan Praks
Publikováno v:
Sensors, Vol 20, Iss 22, p 6702 (2020)
We introduce SodSAR, a fully polarimetric tower-based wide frequency (1–10 GHz) range Synthetic Aperture Radar (SAR) aimed at snow, soil and vegetation studies. The instrument is located in the Arctic Space Centre of the Finnish Meteorological Inst
Externí odkaz:
https://doaj.org/article/7958e0d152a3411eaee7cf0f1436eb16
Publikováno v:
International Journal of Digital Earth, Vol 12, Iss 8, Pp 858-859 (2019)
Externí odkaz:
https://doaj.org/article/e4f4176a482d4ddd8646ad7a97cd0e6e
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
Autor:
Jaakko Ikonen, Tuomo Smolander, Kimmo Rautiainen, Juval Cohen, Juha Lemmetyinen, Miia Salminen, Jouni Pulliainen
Publikováno v:
Geosciences, Vol 8, Iss 2, p 51 (2018)
Several previous studies have discussed the challenges in remotely sensed soil moisture retrievals over northern boreal environments. However, very few studies have focused solely on an evaluation of these products specifically over these areas. This
Externí odkaz:
https://doaj.org/article/8ed1e21a075d47f0ab1d192b0546ca27
Autor:
Juha Lemmetyinen, Chris Derksen, Helmut Rott, Giovanni Macelloni, Josh King, Martin Schneebeli, Andreas Wiesmann, Leena Leppänen, Anna Kontu, Jouni Pulliainen
Publikováno v:
Remote Sensing, Vol 10, Iss 2, p 170 (2018)
Current methods for retrieving SWE (snow water equivalent) from space rely on passive microwave sensors. Observations are limited by poor spatial resolution, ambiguities related to separation of snow microstructural properties from the total snow mas
Externí odkaz:
https://doaj.org/article/01719e1cb6af487eb5577e9d6494b5cc
Autor:
Kristin Böttcher, Tiina Markkanen, Tea Thum, Tuula Aalto, Mika Aurela, Christian H. Reick, Pasi Kolari, Ali N. Arslan, Jouni Pulliainen
Publikováno v:
Remote Sensing, Vol 8, Iss 7, p 580 (2016)
The objective of this study was to assess the performance of the simulated start of the photosynthetically active season by a large-scale biosphere model in boreal forests in Finland with remote sensing observations. The start of season for two fores
Externí odkaz:
https://doaj.org/article/63b943776e7e463cbf76581613db5070