Search Results

You are looking at 101 - 110 of 12,973 items for :

  • All content x
Clear All
R. Mott, S. Schlögl, L. Dirks, and M. Lehning

springtime snow cover typically changes from a continuous snow cover to a mosaic of patches of snow and bare ground, inducing an extreme heterogeneity of the land surface ( Liston 1995 ). In the absence of terrain, strong snow cover variations drive a snow-breeze type of circulation, responding to the strong thermal contrast between snow and bare ground ( Johnson et al. 1984 ; Taylor et al. 1998 ). In mountainous regions, where springtime snow cover is mainly governed by complex terrain and elevation

Open access
James Foster, Glen Liston, Randy Koster, Richard Essery, Helga Behr, Lydia Dumenil, Diana Verseghy, Starly Thompson, David Pollard, and Judah Cohen

FEBRUARY 1996 FOSTER ET AL. 409Snow Cover and Snow Mass Intercomparisons of General Circulation Models and Remotely Sensed DatasetsJAMES FOSTER,* GLEN LISTON, * RANDY KOSTER, * RICHARD ESSERY,* HELGA BEHR,# LYDIA DUMEN1L,# DIANA VERSEGHY, @ STARLY THOMPSON, & DAVID POLLARD, & AND JUDAH COHEN * **NASA, Goddard Space Flight Center, Greenbelt, Maryland

Full access
Andrew J. Newman, Martyn P. Clark, Adam Winstral, Danny Marks, and Mark Seyfried

over vegetation and bare ground ( Niu et al. 2011 ). Snow cover is treated via a multilayer approach with up to three layers possible, dependent on snow depth. Surface temperatures are solved via energy balance equations and the temperature profile throughout snow and soil is also predicted ( Niu et al. 2011 ). These changes to representation of vegetation, snow physics, surface energy balance, and other areas in Noah-MP result in improved SWE, runoff, and flux estimates over the older Noah version

Full access
Donald R. Wiesnet and Michael Matson

828 MONTHLY WEATHER REVIEW VOLV~E 104A Possible Forecasting Technique for Winter Snow Cover in the Northern Hemisphere and l~urasia DONALD R. V~IESNET AND MICHAEL MATSONNOAA /Na~ional Emgronm,nt~ Sa~llil~ S~, Waslgnglon, D. C. 20233 (Manuscript received 5 December 1975, in revised form 29 March 1976)ABSTRACT Winter season suow and ice charts of the Northern Hemisphere based on satellite

Full access
Shizuo Liu, Qigang Wu, Steven R. Schroeder, Yonghong Yao, Yang Zhang, Tongwen Wu, Lei Wang, and Haibo Hu

1. Introduction Snow anomalies affect moisture, radiation, and the energy budget, and cause both local and distant temperature responses ( Namias 1985 ; Cohen and Rind 1991 ; Groisman et al. 1994 ). Many studies have examined impacts of Eurasian snow cover anomalies on the hemispheric and regional atmospheric circulation. Observational and modeling studies have shown that autumn Siberian snow cover extent (SCE) anomalies can induce an Arctic Oscillation ( Thompson and Wallace 1998 ) or North

Open access
Douglas G. Hahn and J. Shukla

DECEMBER1976 NOTES AND CORRESPONDENCE 2461An Apparent Relationship between Eurasian Snow Cover and Indian Monsoon Rainfall DOUGLAS G. HAHN Geophysical Fluid Dynamics Laboratory/NOAA, Princeton University, Princeton, N.J. 08540 J. SarrKZA Geophysical Fluid Dy nannies Program, Princeton Unlvers~ty, Princeton, N.J. 08540 11 August 1976

Full access
Reinel Sospedra-Alfonso, Lawrence Mudryk, William Merryfield, and Chris Derksen

1. Introduction Snow is the component of the cryosphere having the largest seasonal variation ( Frei et al. 2012 ). Seasonal snow cover plays a central role in the earth’s hydrology and the surface energy balance and has a major effect on climate and biogeochemical cycling. A fundamental quantity describing seasonal snow cover is snow water equivalent (SWE), which is defined as the depth of water that would result if the mass of snow melted completely ( Fierz et al. 2009 ). The SWE as well as

Full access
Chris Derksen, Arvids Silis, Matthew Sturm, Jon Holmgren, Glen E. Liston, Henry Huntington, and Daniel Solie

1. Introduction Snow cover is a defining characteristic of arctic and subarctic environments, covering the land surface for up to nine months of the year. Because of this temporal persistence, the importance of snow cover to the ecology, climatology, and hydrology of the tundra cannot be overstated. Snow plays a synergistic role in linking processes that span these different systems. For instance, snow–shrub interactions driven by wind transport can control local-scale snow depth distributions

Full access
J. Fasullo

, thus, exist as key science objectives. Because continental snow cover is believed to comprise one of the few sources of seasonal persistence in the Asian region, and, thus, may potentially be used as an empirical predictor, the monsoon– snow cover relationship is particularly compelling. Blanford (1884) first suggests that the varying extent and thickness of continental snow cover exerts an influence on the land surface's thermal characteristics and, in turn, influences the onset of the Asian

Full access
Kenneth F. Dewey

1594 MONTHLY WEATHER REVIEW VOLmaEI0$NOTES AND CORRESPONDENCEDaily Maximum and Minimum Temperature Forecasts and the Influence of Snow Cover Y~N~.X~Z F. DEWEYlTvchnlque~ Development L~boratory, Nation~ Wea~he~ Service, NOAA, $i~wr .Spring, Md. 20910 18 May 1977 and I September 1977ABSTRACT Research into the relationship between snow cover and observed maximum and

Full access