Filters








17 Hits in 6.4 sec

Observing seasonal snow changes in the boreal forest area using active and passive microwave measurements

J. Pulliainen, J. Lemmetyinen, A. Kontu, A. Arslan, A. Wiesmann, T. Nagler, H. Rott, M. Davidson, D. Schuettemeyer, M. Kern
2010 2010 IEEE International Geoscience and Remote Sensing Symposium  
METHODOLOGY The presented activities are aimed at acquiring a comprehensive experimental dataset on the backscattering characteristics of snow at Ku-band and X-band frequencies, and using these data for  ...  In recent years limited data sets combining ground-based X-and Ku-band data sets have been acquired.  ... 
doi:10.1109/igarss.2010.5653105 dblp:conf/igarss/PulliainenLKAWNRDSK10 fatcat:u3w7xhaebzeilc6faer4z5q6lu

Evaluation of vegetation effect on the retrieval of snow parameters from backscattering measurements: A contribution to CoReH2O mission

Giovanni Macelloni, Marco Brogioni, Francesco Montomoli, Giacomo Fontanelli, Michael Kern, Helmut Rott
2010 2010 IEEE International Geoscience and Remote Sensing Symposium  
Also concurrent space-borne observations with TerraSAR-X, Cosmo SkyMed Xband SAR and Ku-band QuikScat scatterometer will be collected in the campaigns enabling satellite data analysis and testing of algorithms  ...  We expect that the planned activities in (a) NoSREx campaign, northern Finland and (b) Churchill campaign in Canada during the winter of 2009-2010 will provide valuable new data sets at both X-and Ku-band  ... 
doi:10.1109/igarss.2010.5649877 dblp:conf/igarss/MacelloniBMFKR10 fatcat:5wjhsspbr5eo7od276bu6stfii

Cold Regions Hydrology High-Resolution Observatory for Snow and Cold Land Processes

Helmut Rott, Simon H Yueh, Donald W Cline, Claude Duguay, Richard Essery, Christian Haas, Florence Hélière, Michael Kern, Giovanni Macelloni, Eirik Malnes, Thomas Nagler, Jouni Pulliainen (+2 others)
2010 Proceedings of the IEEE  
Satellite missions for systematic and global snow observations will be essential to improve the representation of the cryosphere in climate models and to advance the knowledge and prediction of the water  ...  The dual-frequency and dual-polarization design enables the decomposition of the scattering signal for retrieving snow mass and other physical properties of snow and ice.  ...  The part of work described in this paper that was performed by the Jet Propulsion Laboratory, California Institute of Technology, was carried out under a contract with the National Aeronautics and Space  ... 
doi:10.1109/jproc.2009.2038947 fatcat:3qkmbgbgyjcdfh4zt3sv3bgqmy

Review article: Global monitoring of snow water equivalent using high-frequency radar remote sensing

Leung Tsang, Michael Durand, Chris Derksen, Ana P. Barros, Do-Hyuk Kang, Hans Lievens, Hans-Peter Marshall, Jiyue Zhu, Joel Johnson, Joshua King, Juha Lemmetyinen, Melody Sandells (+16 others)
2022 The Cryosphere  
In this paper, we review the potential contribution of X- and Ku-band synthetic aperture radar (SAR) for global monitoring of SWE.  ...  The physical basis for estimating SWE from X- and Ku-band radar measurements at local scales is volume scattering by millimeter-scale snow grains.  ...  Figure 10 demonstrates the effect of changing snow conditions on the observed Ku-band co-polarized backscatter during two of the SnowSAR flights in Finland.  ... 
doi:10.5194/tc-16-3531-2022 fatcat:3uy3h7gsgvaavgpi7gm6ttzdti

The Potential of Earth Observation for the Analysis of Cold Region Land Surface Dynamics in Europe—A Review

Zhongyang Hu, Claudia Kuenzer, Andreas J. Dietz, Stefan Dech
2017 Remote Sensing  
With this review article we aim at closing this gap by providing an overview of EO-based techniques for cold region observation in Europe, focusing on the dynamics of glaciers and snow.  ...  We present a novel spatial delineation of cold regions for Europe before analyzing the benefits and limitations of different EO sensor types and data processing methods for EO based cold region research  ...  Acknowledgments: The authors would like to thank the China Scholarship Council for the financial support of  ... 
doi:10.3390/rs9101067 fatcat:irinzpju25hhjjmxcxhjui22xq

A Modeling-Based Approach for Soil Frost Detection in the Northern Boreal Forest Region With C-Band SAR

Juval Cohen, Kimmo Rautiainen, Jaakko Ikonen, Juha Lemmetyinen, Tuomo Smolander, Juho Vehvilainen, Jouni Pulliainen
2018 IEEE Transactions on Geoscience and Remote Sensing  
Publication 2: Implications of Boreal Forest Stand Characteristics for X-Band SAR Flood Mapping Accuracy. The author was the main contributor in this paper.  ...  The SMAP algorithm designed for the active sensor was tested for Aquarius L-band scatterometer observations (Xu, et al., 2016) .  ... 
doi:10.1109/tgrs.2018.2864635 fatcat:x3auxabsljeyrerx27tkdl23aa

Review article: Performance assessment of radiation-based field sensors for monitoring the water equivalent of snow cover (SWE)

Alain Royer, Alexandre Roy, Sylvain Jutras, Alexandre Langlois
2021 The Cryosphere  
Continuous and spatially distributed data of snow mass (water equivalent of snow cover, SWE) from automatic ground-based measurements are increasingly required for climate change studies and for hydrological  ...  In both cases, CRNP needs ancillary atmospheric measurements for SWE retrieval. (2) GMON is the most mature instrument for snowpacks that are typically up to 800 mm w.e.  ...  data (in situ) at the SIRENE site for the winter season of 2008-2009.  ... 
doi:10.5194/tc-15-5079-2021 fatcat:i7jjftvjxrhw5jri4pw3as6qbi

A New Orbiting Deployable System for Small Satellite Observations for Ecology and Earth Observation

Elena Martellato, Alice Maria Piccirillo, Giampaolo Ferraioli, Alessandra Rotundi, Vincenzo Della Corte, Pasquale Palumbo, Emanuele Alcaras, Luca Appolloni, Giuseppe Aulicino, Ivano Bertini, Vincenzo Capozzi, Elena Catucci (+21 others)
2022 Remote Sensing  
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY  ...  Acknowledgments: The authors thank the Editor and anonymous Reviewers for critical discussion on this and on an earlier version of the study.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs14092066 dblp:journals/remotesensing/MartellatoPFRCP22 fatcat:7whtbgl2wjfs7jwct5hede4n34

Microstructure representation of snow in coupled snowpack and microwave emission models

Melody Sandells, Richard Essery, Nick Rutter, Leanne Wake, Leena Leppänen, Juha Lemmetyinen
2016 The Cryosphere Discussions  
Consistency between snowpack microstructure and microwave emission models, and the choice of snowpack densification algorithms should be considered in the design of snow mass retrieval systems and microwave  ...  The smallest absolute values of mean bias in brightness temperature over a season for a particular frequency and polarization ranged from 0.9 to 7.2 K.  ...  This work was funded in part by the NERC National Centre for Earth Observation, and supported by the European Space Agency projects "Technical assistance for the deployment of an X-to Ku-band scatterometer  ... 
doi:10.5194/tc-2016-181 fatcat:w5iof4j5wjarljrzuw3tsz74my

Microstructure representation of snow in coupled snowpack and microwave emission models

Melody Sandells, Richard Essery, Nick Rutter, Leanne Wake, Leena Leppänen, Juha Lemmetyinen
2017 The Cryosphere  
Consistency between snowpack microstructure and microwave emission models, and the choice of snowpack densification algorithms should be considered in the design of snow mass retrieval systems and microwave  ...  Two years of meteorological data from the Sodankylä Arctic Research Centre, Finland, were used to drive the model over the 2011–2012 and 2012–2013 winter periods.  ...  This work was funded in part by the NERC National Centre for Earth Observation, and supported by the European Space Agency projects "Technical assistance for the deployment of an X-to Ku-band scatterometer  ... 
doi:10.5194/tc-11-229-2017 fatcat:3wwvkk22mzgzrcrnilyvsrul6a

Table of Contents

2020 IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium  
APPLICATION IN OPERATIONAL MARINE FORECASTING AND WARNING TH1-R8.7: A STUDY ON COMBINED C-AND KU-BAND INCONSISTENCIES FIX IN SATELLITE IMAGES TH1-R10: REMOTE SENSING FOR FOREST AND VEGETATION  ...  Hawai'i at Manoa, France; Carole Le Guyader, INSA Rouen, France TU2-R8.4: EFFECTS OF WIND ESTIMATION ERRORS ON OCEAN SURFACE CURRENT .................................... 5701 RETRIEVAL FOR A DOPPLER SCATTEROMETER  ... 
doi:10.1109/igarss39084.2020.9323828 fatcat:6aittajt35gufeaugcmemu5cya

Anisotropy of seasonal snow measured by polarimetric phase differences in radar time series

S. Leinss, H. Löwe, M. Proksch, J. Lemmetyinen, A. Wiesmann, I. Hajnsek
2015 The Cryosphere Discussions  
The copolar phase differences (CPD) of polarized microwaves transmitted through dry snow were analyzed for four winter seasons (2009–2013) from the SnowScat Instrument, installed at a test site near the  ...  The presented dataset provides a valuable basis for the future development of snow models capable of including the anisotropic structure of snow.  ...  The in situ data collection was supported by the European Space Agency activity "Technical assistance for the deployment of an X-to Ku-band scatterometer during the NoSREx experiment" (ESA ESTEC contract  ... 
doi:10.5194/tcd-9-6061-2015 fatcat:zpffxrpn25dttec5uhreyfu5fy

Microwave interferometric radiometry in remote sensing: An invited historical review

M. Martín-Neira, D. M. LeVine, Y. Kerr, N. Skou, M. Peichl, A. Camps, I. Corbella, M. Hallikainen, J. Font, J. Wu, S. Mecklenburg, M. Drusch
2014 Radio Science  
The launch of the Soil Moisture and Ocean Salinity (SMOS) mission on 2 November 2009 marked a milestone in remote sensing for it was the first time a radiometer capable of acquiring wide field of view  ...  The baseline, measured in wavelengths, gives directly the value of the MARTIN-NEIRA ET AL.  ...  Acknowledgments The following people are acknowledged for having had important contributions, one way or another, to the developments presented in this paper: Jean-Marc Goutoule (Astrium EADS, Toulouse  ... 
doi:10.1002/2013rs005230 fatcat:v4lpbzfvybhsbaj7qzaofgozae

State of the Climate in 2008

T. C. Peterson, M. O. Baringer
2009 Bulletin of The American Meteorological Society - (BAMS)  
table 2.1. monthly and annual climatological information on Northern Hemisphere and continental snow extent between Nov 1966 and Dec 2008. included are the numbers of years with data used in the calculations  ...  , means, std dev, 2008 values, and rankings. areas are in millions of square kilometers. 1968, 1969, and 1971 have 1, 5, and 3 missing months, respectively, and thus are not in cluded in the annual (ann  ...  We would like to acknowledge our sincere appreciation for the many anonymous reviewers who worked under tight deadlines and whose insights made this and future issues of the  ... 
doi:10.1175/bams-90-8-stateoftheclimate fatcat:xfjuy6hjyvdtbgknshajhpxqmy

Response of RADAR Backscatter at Multiple Frequencies and Polarizations to Changing Snow and Ice Properties on a Temperate Saline Lake

Justin F. Beckers
2012
In the winters of 2008/09 and 2009/10, C-, X-, and Ku-band imagery retrieved from Envisat ASAR, TerraSAR-X and QuikSCAT were compared with repeated in-situ and autonomous measurements of snow and ice properties  ...  Ku-and X-band backscatter increased with snow depth and SWE. Ku-band backscatter decreased with increasing snow wetness and brine volume.  ...  No Ku-backscatter data for 2009/10 2. Low temporal resolution of C and X-band imagery 3. Low spatial resolution of Ku-band scatterometer data 4. Poor monitoring of snow grain size and wetness 5.  ... 
doi:10.7939/r3h041 fatcat:sdyzb2sxnvbrxll6gxnenbhwzi
« Previous Showing results 1 — 15 out of 17 results