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  • 1
    Publisher: Copernicus
    Corporation: International Association of Hydrological Sciences, IAHS
    Print ISSN: 2199-8981
    Electronic ISSN: 2199-899X
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Keywords: Hydrologie
    Acronym: PIAHS
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  • 2
    Publication Date: 2018
    Description: 〈b〉Validating improved-MODIS products from spectral mixture-Landsat snow cover maps in a mountain region in southern Spain〈/b〉〈br〉 Rafael Pimentel, Carlo Marín, Ludovica De Gregorio, Mattia Callegari, María J. Pérez-Palazón, Claudia Notarnicola, and María J. Polo〈br〉 Proc. IAHS, 380, 67-72, https://doi.org/10.5194/piahs-380-67-2018, 2018〈br〉 In Mediterranean regions, the spatiotemporal evolution of the snow cover can experiment quick changes and high frequency sensors are required to adequately monitor such shifts. This work presents a methodological approach to validate the improved MODIS daily snow cover maps, in a Sierra Nevada (southern Spain), from a reference data set obtained by Landsat TM data. The results show a significantly high correlation between the two snow map products at differents spatial scale.
    Print ISSN: 2199-8981
    Electronic ISSN: 2199-899X
    Topics: Architecture, Civil Engineering, Surveying , Geography
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  • 3
    Publication Date: 2018
    Description: 〈b〉Joint editorial: Invigorating hydrological research through journal publications〈/b〉〈br〉 Nevil Quinn, Günter Blöschl, András Bárdossy, Attilio Castellarin, Martyn Clark, Christophe Cudennec, Demetris Koutsoyiannis, Upmanu Lall, Lubomir Lichner, Juraj Parajka, Christa D. Peters-Lidard, Graham Sander, Hubert Savenije, Keith Smettem, Harry Vereecken, Alberto Viglione, Patrick Willems, Andy Wood, Ross Woods, Chong-Yu Xu, and Erwin Zehe〈br〉 Proc. IAHS, 380, 3-8, https://doi.org/10.5194/piahs-380-3-2018, 2018〈br〉 〈p〉Editors of several journals in the field of hydrology met during the General Assembly of the European Geosciences Union (EGU) in Vienna in April 2017. This event was a follow-up of similar meetings held in 2013 and 2015. These meetings enable the group of editors to review the current status of the journals and the publication process, and to share thoughts on future strategies. Journals were represented at the 2017 meeting by their editors, as shown in the list of authors. The main points on invigorating hydrological research through journal publications are communicated in this joint editorial published in the above journals.〈/p〉
    Print ISSN: 2199-8981
    Electronic ISSN: 2199-899X
    Topics: Architecture, Civil Engineering, Surveying , Geography
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  • 4
    Publication Date: 2018
    Description: 〈b〉Image acquisition effects on Unmanned Air Vehicle snow depth retrievals〈/b〉〈br〉 Ahmet Emre Tekeli and Senayi Dönmez〈br〉 Proc. IAHS, 380, 81-85, https://doi.org/10.5194/piahs-380-81-2018, 2018〈br〉 Current study is unique in that the SD retrievals were derived using two different image acquisition modes. In the first, images were taken as UAV was continuously flying and in the second UAV kept its position in air fixed as the photos were taken. Root mean square error of derived SDs is found as 2.43 and 1.79 cm in continuous and fixed acquisitions. The results support the hypothesis, that fixed-position image acquisitions using multi-rotor platforms should enable more accurate SD estimates.
    Print ISSN: 2199-8981
    Electronic ISSN: 2199-899X
    Topics: Architecture, Civil Engineering, Surveying , Geography
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  • 5
    Publication Date: 2018
    Description: 〈b〉Preface: Earth Observation for Integrated Water and Basin Management: Challenges for adaptation to a changing environment〈/b〉〈br〉 María J. Polo, Maria P. González-Dugo, and Christopher Neale〈br〉 Proc. IAHS, 380, 1-2, https://doi.org/10.5194/piahs-380-1-2018, 2018〈br〉
    Print ISSN: 2199-8981
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    Topics: Architecture, Civil Engineering, Surveying , Geography
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  • 6
    Publication Date: 2018
    Description: 〈b〉Remote sensing vegetation index methods to evaluate changes in greenness and evapotranspiration in riparian vegetation in response to the Minute 319 environmental pulse flow to Mexico〈/b〉〈br〉 Pamela L. Nagler, Christopher J. Jarchow, and Edward P. Glenn〈br〉 Proc. IAHS, 380, 45-54, https://doi.org/10.5194/piahs-380-45-2018, 2018〈br〉 Our study examined the effects of water transfer, or ecological environmental flows, from one country to another. We studied the impact of a historic, binational, water release, Minute 319 of the 1944 Water Treaty, on vegetative response along the riparian corridor on the lower Colorado River to Mexico. During the spring of 2014, 130 million cubic meters of water were released from the United States to Mexico, allowing water to reach the Gulf of California for the first time in 13 years.
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    Topics: Architecture, Civil Engineering, Surveying , Geography
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  • 7
    Publication Date: 2018
    Description: 〈b〉Effect of the water stress on gross primary production modeling of a Mediterranean oak savanna ecosystem〈/b〉〈br〉 Pedro J. Gómez-Giráldez, Elisabet Carpintero, Mario Ramos, Cristina Aguilar, and María P. González-Dugo〈br〉 Proc. IAHS, 380, 37-43, https://doi.org/10.5194/piahs-380-37-2018, 2018〈br〉 This work investigates the effect of different parameterizations to account for water stress on GPP estimates and their agreement with observations. GPP is estimated with a LUE-model in the footprint of the EC tower using several approaches. The preliminary results obtained during two hydrological years (2015/2016 and 2016/2017) are compared, focusing on specific wet and dry periods.
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    Topics: Architecture, Civil Engineering, Surveying , Geography
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  • 8
    Publication Date: 2018
    Description: 〈b〉Use of Sentinel 2 – MSI for water quality monitoring at Alqueva reservoir, Portugal〈/b〉〈br〉 Miguel Potes, Gonçalo Rodrigues, Alexandra Marchã Penha, Maria Helena Novais, Maria João Costa, Rui Salgado, and Maria Manuela Morais〈br〉 Proc. IAHS, 380, 73-79, https://doi.org/10.5194/piahs-380-73-2018, 2018〈br〉 The Alqueva reservoir is located in the southeast of Portugal. This region is facing an increase in droughts and a degradation in water quality mainly due to more frequent and lasting phytoplancton blooms. With satellite remote sensing is possible to monitoring such reservoirs. In this study, Sentinel-2 presents very good estimation for chlorophyll a, cyanobacteria and water turbidity during a micro algae bloom that vanished due to the approximation of hurricane Ophelia to Iberian Peninsula.
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  • 9
    Publication Date: 2018
    Description: 〈b〉Evapotranspiration and evaporation/transpiration partitioning with dual source energy balance models in agricultural lands〈/b〉〈br〉 Gilles Boulet, Emilie Delogu, Sameh Saadi, Wafa Chebbi, Albert Olioso, Bernard Mougenot, Pascal Fanise, Zohra Lili-Chabaane, and Jean-Pierre Lagouarde〈br〉 Proc. IAHS, 380, 17-22, https://doi.org/10.5194/piahs-380-17-2018, 2018〈br〉 Mapping of transpiration T and evaporation E is crucial for assessing plant water use and plant water status at landscape scale. Dual-source energy balance models forced by thermal infrared observations provide separate estimates of E and T but rely on specific assumptions to get both terms from the sole surface temperature. We show here with a synthetic experiment that additional information is thus required, e.g. surface water content that can be derived from radar.
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  • 10
    Publication Date: 2018
    Description: 〈b〉Assessment of SMADI and SWDI agricultural drought indices using remotely sensed root zone soil moisture〈/b〉〈br〉 Miriam Pablos, Ángel González-Zamora, Nilda Sánchez, and José Martínez-Fernández〈br〉 Proc. IAHS, 380, 55-66, https://doi.org/10.5194/piahs-380-55-2018, 2018〈br〉 〈p〉The increasing frequency of drought events has expanded the research interest in drought monitoring. In this regard, remote sensing is a useful tool to globally mapping the agricultural drought. While this type of drought is directly linked to the availability of root zone soil moisture (RZSM) for plants growth, current satellite soil moisture observations only characterize the water content of the surface soil layer (0–5 〈span〉cm〈/span〉). In this study, two soil moisture-based agricultural drought indices were obtained at a weekly rate from June 2010 to December 2016, using RZSM estimations at 1 〈span〉km〈/span〉 from the Soil Moisture and Ocean Salinity (SMOS) satellite, instead of surface soil moisture (SSM). The RZSM was estimated by applying the Soil Water Index (SWI) model to the SMOS SSM. The Soil Moisture Agricultural Drought Index (SMADI) and the Soil Water Deficit Index (SWDI) were assessed over the Castilla y León region (Spain) at 1 〈span〉km〈/span〉 spatial resolution. They were compared with the Atmospheric Water Deficit (AWD) and the Crop Moisture Index (CMI), both computed at different weather stations distributed over the study area. The level of agreement was analyzed through statistical correlation. Results showed that the use of RZSM does not influence the characterization of drought, both for SMADI and SWDI.〈/p〉
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