Download or read book Determination of Snow Depth and Water Equivalent by Remote Sensing written by Harold W. Steinhoff and published by . This book was released on 1978 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DETERMINATION OF SNOW DEPTH AND WATER EQUIVALENT BY REMOTE SENSING written by Harold W. Steinhoff and published by . This book was released on 1976 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remote Sensing of Snow and Its Applications written by Ali Nadir Arslan and published by MDPI. This book was released on 2021-03-17 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reprint book of the “Remote Sensing of Snow and Its Applications” Special Issue provides recent studies on all aspects of remote sensing of snow, from retrieving the data to the application. These studies mainly address the following: (a) New opportunities (Copernicus Sentinels) and emerging remote sensing methods, (b) use of snow data in modeling, and (c) characterization of snowpack.
Download or read book Airborne Gamma Radiation Snow Water Equivalent and Soil Moisture Measurements and Satellite Areal Extent of Snow Cover Measurements written by Thomas R. Carroll and published by . This book was released on 1988 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supporting NASA SnowEx Remote Sensing Strategies and Requirements for L Band Interferometric Snow Depth and Snow Water Equivalent Estimation written by Elias J. Deeb and published by . This book was released on 2017 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research are to (1) address remote sensing strategies and requirements for estimating snow depth and snow water equivalent (SWE) using existing L-Band interferometric data sets in coordination with field-based observations and modeling frameworks and, with this information, (2) inform the Next Generation Cold Land Processes Experiment (SnowEx) toward articulating the appropriate science and research questions for a single motivating science plan. As proposed, SnowEx is a multi-year airborne snow campaign with a primary goal of exploring multimodal sensor observations in coordination with field campaigns to inform the next generation snow remote sensing satellite platform. Based on limitations of satellite-based optical and LiDAR instruments operating in regions of the globe with consistent cloud-cover, the fact that many snow-dominated regions are at more northerly latitudes (limited solar illumination in the middle of winter), and these snow-dominated regions often experience periods of prolonged cloud cover (due to synoptic precipitation events), a microwave remote sensing platform may be the most viable path to space for a dedicated snow remote sensing mission. Specifically, L-Band radar interferometry has shown some unique promise with an archive of historical and contemporary satellite collections from JAXA's PALSAR-1 and PALSAR-2 instruments, respectively. Moreover, with the expected NISAR (NASA-ISRO Synthetic Aperture Radar) mission launch in 2020 and the unprecedented availability of dedicated global interferometric L-Band products every 12-days, as well as what is in essence a NISAR airborne simulator in JPL's UAVSAR platform, the L-Band interferometric approach to estimating snow depth and snow water equivalent (SWE) requires further investigation within the context of in-situ observations and modeling frameworks.
Download or read book Principles of Snow Hydrology written by David R. DeWalle and published by Cambridge University Press. This book was released on 2008-07-03 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Snow Hydrology describes the factors that control the accumulation, melting and runoff of water from seasonal snowpacks over the surface of the earth. The book addresses not only the basic principles governing snow in the hydrologic cycle, but also the latest applications of remote sensing, and techniques for modeling streamflow from snowmelt across large mixed land-use river basins. Individual chapters are devoted to climatology and distribution of snow, snowpack energy exchange, snow chemistry, ground-based measurements and remote sensing of snowpack characteristics, snowpack management, and modeling snowmelt runoff. Many chapters have review questions and problems with solutions available online. This book is a reference book for practicing water resources managers and a text for advanced hydrology and water resources courses which span fields such as engineering, earth sciences, meteorology, biogeochemistry, forestry and range management, and water resources planning.
Download or read book Correlation and Prediction of Snow Water Equivalent from Snow Sensors written by Bruce J. McGurk and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1982, under an agreement between the California Department of Water Resources and the USDA Forest Service, snow sensors have been installed and operated in Forest Service-administered wilderness areas in the Sierra Nevada of California. The sensors are to be removed by 2005 because of the premise that sufficient data will have been collected to allow "correlation" and, by implication, prediction of wilderness snow data by nonwilderness sensors that are typically at a lower elevation. Because analysis of snow water equivalent (SWE) data from these wilderness sensors would not be possible until just before they are due to be removed, "surrogate pairs" of high- and low-elevation snow sensors were selected to determine whether correlation and prediction might be achieved. Surrogate pairs of sensors with between 5 and 15 years of concurrent data were selected, and correlation and regression were used to examine the statistical feasibility of SWE prediction after "removal" of the wilderness sensors. Of the 10 pairs analyzed, two pairs achieved a correlation coefficient of 0.95 or greater. Four more had a correlation of 0.94 for the accumulation period after the snow season was split into accumulation and melt periods. Standard errors of estimate for the better fits ranged from 15 to 25 percent of the mean April 1 snow water equivalent at the high-elevation sensor. With the best sensor pairs, standard errors of 10 percent were achieved. If this prediction error is acceptable to water supply forecasters, sensor operation through 2005 in the wilderness may produce predictive relationships that are useful after the wilderness sensors are removed
Download or read book Thriving on Our Changing Planet A Decadal Strategy for Earth Observation from Space written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-06-18 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: We live on a dynamic Earth shaped by both natural processes and the impacts of humans on their environment. It is in our collective interest to observe and understand our planet, and to predict future behavior to the extent possible, in order to effectively manage resources, successfully respond to threats from natural and human-induced environmental change, and capitalize on the opportunities â€" social, economic, security, and more â€" that such knowledge can bring. By continuously monitoring and exploring Earth, developing a deep understanding of its evolving behavior, and characterizing the processes that shape and reshape the environment in which we live, we not only advance knowledge and basic discovery about our planet, but we further develop the foundation upon which benefits to society are built. Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space (National Academies Press, 2018) provides detailed guidance on how relevant federal agencies can ensure that the United States receives the maximum benefit from its investments in Earth observations from space, while operating within realistic cost constraints. This short booklet, designed to be accessible to the general public, provides a summary of the key ideas and recommendations from the full decadal survey report.
Download or read book Snow and Climate written by Richard L. Armstrong and published by Cambridge University Press. This book was released on 2008-04-24 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the prevailing state of snow-climate science for researchers and advanced students.
Download or read book Snow Cover Measurements and Areal Assessment of Precipitation and Soil Moisture written by Boris Sevruk and published by World Meteorological Organization. This book was released on 1992 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Multi scale Remote Sensing Analysis of Great Lakes Snowfall written by James R. Hulka and published by . This book was released on 2007 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the 1960's, remote sensing instruments aboard Earth-orbiting satellites have provided scientists with snowfall data. As the technology of these instruments has changed, so have the methods of using remote sensing data to calculate snow cover, snow depth, and snow-water equivalent. Spectral characteristics of snow are highly variable based on a number of factors, including grain size, depth, terrain, and age. Previous research has shown that an index can be generated using reflectance values from remote sensing data that makes classification of snow-covered land much easier.
Download or read book Compendium of Meteorology written by Horace R. Byers and published by . This book was released on 1952 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remote Sensing in Snow Hydrology written by Klaus Seidel and published by Springer Science & Business Media. This book was released on 2004-04-07 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors of this monograph initially provide an assessment of the role of snow and ice in the global water balance, and methods of snow measurements are detailed. Periodical satellite snow-cover mapping enabling the regional distribution of snow and water equivalent is evaluated, enhancing runoff forecasts.
Download or read book Application of Passive and Active Microwave Remote Sensing for Snow Water Equivalent Estimation written by Jinmei Pan and published by . This book was released on 2017 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snow accumulation on the ground changes the energy balance between the land and the atmosphere, and stores winter precipitation for water supplies in many parts of the world. In practice, the snow water equivalent (SWE), defined as the equivalent depth of liquid water when snow completely melts, is difficult to map in cold regions except via remote sensing techniques. The microwave remote sensing (MWRS) has been used for SWE estimation since the 1980s based on the interactions of microwave radiation with snow crystals. In this study, physically based radiative transfer (RT) models and the Bayesian-based Markov Chain Monte Carlo (MCMC) approach were applied to develop a high-accuracy SWE retrieval algorithm. The models and the algorithms were tested using ground-based snowpit and microwave measurements. Two widely-used snow RT models were fully-compared in the aspects of snow micro-structure assumptions, volume scattering theories and the RT equation resolution. The Microwave Emission Model of Layered Snowpacks (MEMLS) based on the Improved Born Approximation (IBA) was shown to be an adequate observation model to estimate SWE using the multi-frequency brightness temperature (TB) at 10.65 to 90 GHz. The prior information is from a set of globally-available datasets, and the performance is tested for local prior information derived from historical ground measurements. The retrieval algorithm was later adapted for active microwave SWE retrieval using the backscattering coefficient at 10.2 to 16.7 GHz. Results showed that MEMLS-IBA can simulate the measured microwave signals with a 10-K accuracy for TB and a 1-dB accuracy for the backscattering coefficient. The passive microwave retrieval algorithm achieved an accuracy of 30-mm for shallow snow, with two-layer snow properties estimated. However, the active microwave retrieval algorithm reproduced similar accuracy only in the synthetic experiment using 1-layer snow property estimates. Future improvement requires a better active microwave observation model.
Download or read book Geographic Information Science for Land Resource Management written by Suraj Kumar Singh and published by John Wiley & Sons. This book was released on 2021-07-27 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geographic Information Science for Land Resource Management is a comprehensive book focusing on managing land resources using innovative techniques of spatial information sciences and satellite remote sensing. The enormous stress on the land resources over the years due to anthropogenic activities for commercialization and livelihood needs has increased manifold. The only solution to this problem lies in stakeholder awareness, which can only be attained through scientific means. The awareness is the basis of the sustainable development concept, which involves optimal management of natural resources, subject to the availability of reliable, accurate, and timely information from the global to local scales. GIScience consists of satellite remote sensing (RS), Geographical Information System (GIS), and Global Positioning System (GPS) technology that is nowadays a backbone of environmental protection, natural resource management, and sustainable development and planning. Being a powerful and proficient tool for mapping, monitoring, modeling, and managing natural resources can help understand the earth surface and its dynamics at different observational scales. Through the spatial understanding of land resources, policymakers can make prudent decisions to restore and conserve critically endangered resources, such as water bodies, lakes, rivers, air, forests, wildlife, biodiversity, etc. This innovative new volume contains chapters from eminent researchers and experts. The primary focus of this book is to replenish the gap in the available literature on the subject by bringing the concepts, theories, and experiences of the specialists and professionals in this field jointly. The editors have worked hard to get the best literature in this field in a book form to help the students, researchers, and policymakers develop a complete understanding of the land system vulnerabilities and solutions.
Download or read book Snow Cover Depletion Curves and Snow Water Equivalent Reconstruction Six Decades of Hydrologic Remote Sensing Applications written by Robert E. Davis and published by . This book was released on 2015 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
