World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

An Application of Gleam to Estimating Global Evaporation : Volume 8, Issue 1 (03/01/2011)

By Miralles, D. G.

Click here to view

Book Id: WPLBN0004012757
Format Type: PDF Article :
File Size: Pages 27
Reproduction Date: 2015

Title: An Application of Gleam to Estimating Global Evaporation : Volume 8, Issue 1 (03/01/2011)  
Author: Miralles, D. G.
Volume: Vol. 8, Issue 1
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

H. Holme, T. R., Gash, J. H., Miralles, D. G., Dolman, A. J., & M. De Je, R. A. (2011). An Application of Gleam to Estimating Global Evaporation : Volume 8, Issue 1 (03/01/2011). Retrieved from http://ebook.worldlibrary.net/


Description
Description: Department of Hydrology, VU University, Amsterdam, The Netherlands. A physics-based methodology is applied to estimate global land-surface evaporation from multi-satellite observations. GLEAM (Global Land-surface Evaporation: the Amsterdam Methodology) combines a wide range of remotely sensed observations within a Priestley and Taylor-based framework. Daily actual evaporation is derived at quarter degree resolution over the world's land surface. A running water balance of the vertical profile of soil moisture in the root zone is used to estimate the effect of soil water stress on transpiration. Forest rainfall interception, evaporation from bare soil, transpiration and snow sublimation are calculated independently. The inclusion of soil moisture deficit and forest rainfall interception – by means of the Gash analytical model – leads to an improved representation of the magnitude and distribution of the latent heat flux over semiarid and forested regions. Analyses of the global results show that interception loss plays an important role in the partition of the precipitation into evaporation and water available for runoff at a continental scale. The global distribution of evaporation and its different components is analysed to understand the relative magnitude of each component over different ecosystems. This study gives new insights into the relative importance of precipitation and net radiation in driving evaporation, and how the seasonal influence of these controls varies over the different regions of the world. Precipitation is recognised as an important factor driving evaporation, not only in areas that have limited soil water availability, but also in areas of high rainfall interception and low available energy.

Summary
An application of GLEAM to estimating global evaporation

Excerpt
Baumgartner, A. and Reichel, E.: The World Water Balance: Mean Annual Global Continental and Maritime Precipitation, Evaporation and Runoff, Elsevier Scientific Publishing Company, Amsterdam, The Netherlands, Oxford, UK and New York, USA, 1975.; Blyth, E. M., Shuttleworth, W. J, and Harding, R. J.: Summary of the GEWEX International Symposium on Global Land-surface Evaporation and Climate, Hydrol. Process., 23, 3411–3412, 2009.; Choudhury, B. J. and DiGirolamo, N. E.: A biophysical process-based estimate of global land surface evaporation using satellite and ancillary data; I. Model description and comparison with observations, J. Hydrol., 205, 164–185, 1998.; De Jeu, R. A. M., Wagner, W., Holmes, T. R. H., Dolman, A. J., van de Giesen, N. C., and Friesen, J.: Global soil moisture patterns observed by space borne microwave radiometers and scatterometers, Surv. Geophys., 29, 399–420, 2008.; Di Baldassarre, G. and Montanari, A.: Uncertainty in river discharge observations: a quantitative analysis, Hydrol. Earth Syst. Sci., 13, 913–921, doi:10.5194/hess-13-913-2009, 2009.; Dirmeyer, P. A., Gao, X. A., Zhao, M., Guo, Z. C., Oki, T., and Hanasaki, N.: GSWP-2 Multimodel anlysis and implications for our perception of the land surface, B. Am. Meteorol. Soc., 87, 1381–1397, 2006.; Dolman, A. J. and De Jeu, R. A. M.: Evaporation in focus, Nat. Geosci., 3, 296, 2010.; Dolman, A. J. and Gash, J. H.: Evaporation in the global hydrological cycle, in: Treatise on Water Science, edited by: Wilderer, P., vol. 2, chapt. 5, Elsevier, in press, 2010.; Ebert, E. E., Janowiak, J. E., and Kidd, C.: Comparison of near-real time precipitation estimates from satellite observations and numerical models, B. Am. Meteorol. Soc., 88, 47–64, 2007.; Fisher, J. B., Tu, K. P., and Baldocchi, D. D.: Global estimates of the land-atmosphere water flux based on monthly AVHRR and ISLSCP-II data, validated at 16 FLUXNET sites, Remote Sens. Environ., 112, 901–919, 2008.; Gash, J. H.: An analytical model of rainfall interception by forests, Q. J. Roy. Meteorol. Soc., 105, 43–55, 1979.; Gash, J. H. and Shuttleworth, W. J.: Vegetation controls on evaporation – commentary, in: Benchmark Papers in Hydrology: Evaporation, edited by: Gash, J. H. and Shuttleworth, W. J., IAHS Press, Wallingford, 233–239, 2007.; Huffman, G. J., Adler, R. F., Morrissey, M. M., Bolvin, D. T., Curtis, S., Joyce, R., McGavock, B., and Susskind, J.: Global precipitation at one-degree daily resolution from multisatellite observations, J. Hydrometeorol., 2, 36–50, 2001.; Jiménez, C., Prigent, C., and Aires, F.: Toward an estimation of global land surface heat fluxes from multisatellite observations, J. Geophys. Res.-Atmos., 114, D06305, doi:10.1029/2008JD011392, 2009.; Jiménez, C., Prigent, C., Mueller, B., Seneviratne, S. I., McCabe, M. F., Wood, E. F., Rossow, W. B., Balsamo, G., Betts, A. K., Dirmeyer, P. A., Fisher, J. B., Jung, M., Kanamitsu, M., Reichle, R. H., Reichstein, M., Rodell, M., Sheffield, J., Ku, T., an

 

Click To View

Additional Books


  • Modelling Water Flow and Seasonal Soil M... (by )
  • Long Term Variability of the Annual Hydr... (by )
  • Prediction of Dissolved Reactive Phospho... (by )
  • A Generic Method for Hydrological Drough... (by )
  • Estimating the Water Needed to End or Am... (by )
  • Sediment Management Modelling in the Blu... (by )
  • Tradeoffs for the Implementation of a Pr... (by )
  • A Review of Regionalisation for Continuo... (by )
  • Towards Integrated Environmental Models ... (by )
  • Confidence Intervals for the Coefficient... (by )
  • Kalman Filters for Assimilating Near-sur... (by )
  • Uncertainties Associated with Digital El... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.