WATER RESOURCES RESEARCH, VOL. 39, NO. 10, 1278, doi:10.1029/2002WR001297, 2003
Tight coupling between soil moisture and the surface radiation budget in semiarid environments: Implications for land-atmosphere interactions Eric E. Small and Shirley A. Kurc Department of Geological Sciences, University of Colorado, Boulder, Colorado, USA Received 11 March 2002; revised 2 May 2003; accepted 20 June 2003; published 4 October 2003.
[1] Observations are used to examine how soil moisture influences the surface radiation
budget, ground heat flux, and available energy in semiarid environments. Defining this relationship is critical to understand interactions between the land surface and the atmosphere, in particular assessing if a feedback exists between soil moisture and rainfall anomalies. We use two summers of data collected from semiarid grassland and shrubland ecosystems in central New Mexico. The response of surface radiation budget components and other variables to soil moisture variations are quantified via linear regression. Then, the variations are scaled over the observed range of soil moisture (15% volumetric water content). The soil temperature is lower by >10C when the surface soil is wet, compared to when the soil is dry. This temperature decrease results in a measured decrease of 85–100 W m2 in longwave radiation emitted at the surface. The increase in net longwave radiation is equal in magnitude because downward longwave radiation does not vary with soil moisture. The observed changes in net shortwave radiation are relatively minor (
ERS scatterometer surface soil moisture analysis of two sites in the south and north .... rain with strong transitional features and steep inclines, which can reach a ...
Jun 3, 2015 - ture as reported for example in Martin et al. (1995), Meixner and Yang (2006) and Van Dijk and Meixner (2001); other studies do not find any ...
Jun 3, 2015 - (soil moisture and temperature, wind speed, sand percentage) ...... tionships according to characteristics of the microbial com- munity. Climatic ...
increases most during this period [Hastenrath and Lamb,. 1978]; and (3) ..... the period 1982â2008 (Table 1) is 0.61 ± 0.12°C, ranging from 0.36°C in 1984 to ...
D698 Test Methods for Moisture-Density Relations of. Soils and .... record the result as the wet unit mass, gm, in pounds per cubic foot or grams per cubic ...
Mar 30, 2012 - properties are considered as constant in time and are derived from the POLDER-1 ..... alumino-silicated silts, fine sand, coarse sand and salts.
Dec 27, 2013 - interactions between earthworm species and soil types on cast properties were ...... 13, 9â16. Bityutskii, N.P., Kaidun, P.I., Yakkonen, K.L., 2012.
presents some features of the soil moisture characteristics and investigates the ... shallow soils and rock outcrops (loamy colluvium, schist, sand- stone outcrops ...
Jan 1, 2001 - face characteristics is analyzed using vegetation index and Special .... albedo correspond to the Great Sand Seas of the Grand. Erg Oriental ...
Jun 28, 2012 - This article may be used for research, teaching, and private study purposes. Any substantial or ... Whereas infrared spectroscopy yields the chemical ... The Adhesion Society Award for Excellence in Adhesion Science, Sponsored by 3M. .
flood forecast systems. As a result ... case of SVAT, they also require detailed information concerning the ...... It could be improved by accounting some additional .... Pearson correlation coefficient matrix between S, K and the different indicator
sample. The particle, described by electric and magnetic polarizabilities, represents the tip of ..... Let us now study the case of a larger particle (500 nm).
Nov 15, 2004 - [7] de Gennes P. G., C. R. Acad. Sci. ... [8] Doi M. and Edwards S. F., The Theory of Polymer Dynamics (Oxford Science Publications). 1986.
Characterization of the thermal, petrophysical and mechanical properties of the ...... 3) Core through Upper Unit (1645-2215m) (evaporites-sand-silt alternations).
SELDI-TOF and Clinprot, using a single bioinfor- matic algorithm. These two approaches rely on mass spectrometry to detect proteins and pep- tides initially ...
twice using 100 µL of the MB-WCX wash solu- tion using the magnetic bead separator (MBS) to collect the microbeads. After removal of the wash solution, 5 µL ...
Nov 15, 2004 - The gradient term, which can be renamed as the interfacial term, is given ..... between crosslinks, P = 230, one polymerisation index of the long.
In recent years, there has been increasing evidence that the microbial communities of soil and plants have an important role in the development of sustainable.
