Surface Albedo and Desertification

Jackson, R. D.; Idso, Sherwood B.; Otterman, J.

doi:10.1126/science.189.4207.1012

Cited by 122 publications

(40 citation statements)

References 12 publications

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“…Human-induced changes include much of the world's deforestation (Skole and Tucker, 1993;Steininger et al, 2001;Sanchez et al, 2001) desertification (Jackson et al, 1975;Otterman, 1976), and climate change (Lawton et al, 2001;Weart, 2003Weart, , 2004, as well as massive species extinctions and rapid loss of intact natural ecosystems (Pimm et al, 1995). Many of these changes to the environment start subtly and occur at spatial and temporal scales unfamiliar to conventional human thinking.…”

Section: Global Change and Satellite Monitoring Of Earthmentioning

confidence: 99%

The Impact of Landsat Satellite Monitoring on Conservation Biology

Leimgruber

Christen

Laborderie

2005

Environ Monit Assess

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Abstract. Landsat 7's recent malfunctioning will result in significant gaps in long-term satellite monitoring of Earth, affecting not only the research of the Earth science community but also conservation users of these data. To determine whether or how important Landsat monitoring is for conservation and natural resource management, we reviewed the Landsat program's history with special emphasis on the development of user groups. We also conducted a bibliographic search to determine the extent to which conservation research has been based on Landsat data. Conservation biologists were not an early user group of Landsat data because a) biologists lacked technical capacity -computers and software -to analyze these data; b) Landsat's 1980s commercialization rendered images too costly for biologists' budgets; and c) the broad-scale disciplines of conservation biology and landscape ecology did not develop until the mid-to-late 1980s. All these conditions had changed by the 1990s and Landsat imagery became an important tool for conservation biology. Satellite monitoring and Landsat continuity are mandated by the Land Remote Sensing Act of 1992. This legislation leaves open commercial options. However, past experiments with commercial operations were neither viable nor economical, and severely reduced the quality of monitoring, archiving and data access for academia and the public. Future satellite monitoring programs are essential for conservation and natural resource management, must provide continuity with Landsat, and should be government operated.

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Section: Global Change and Satellite Monitoring Of Earthmentioning

confidence: 99%

The Impact of Landsat Satellite Monitoring on Conservation Biology

Leimgruber

Christen

Laborderie

2005

Environ Monit Assess

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“…TA results for the different stages showed some differences to those recorded for the entire study period. TA recorded a slightly downward trend in S 1 , a significantly upward trend in S 2 (with a slope of 0.77 ∘ C/decade), and an insignificant downward trend in S 3 ( Figure 3(a), Table 2), results which may be due to alternating surface albedo due to large areas of desertification in S 2 and rapid revegetation activities in S 3 [23,37,[64][65][66][67][68][69][70]. The variations in trends for the different stages in the five subregions are shown in Figure 4(a) and Table 3.…”

Section: Resultsmentioning

confidence: 99%

Temporal Trends and Spatial Patterns of Temperature and Its Extremes over the Beijing-Tianjin Sand Source Region (1960–2014), China

Wei

Wang

Zhang

et al. 2018

Advances in Meteorology

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In order to examine temperature changes and extremes in the Beijing-Tianjin Sand Source Region (BTSSR), ten extreme temperature indices were selected, categorized, and calculated spanning the period 1960-2014, and the spatiotemporal variability and trends of temperature and extremes on multitimescales in the BTSSR were investigated using the Mann-Kendall (M-K) test, Sen's slope estimator, and linear regression. Results show that mean temperatures have increased and extreme temperature events have become more frequent. Annual temperature has recorded a significant increasing trend over the BTSSR, in which 51 stations exhibited significant increasing trends ( < 0.05); winter temperature recorded the most significant increasing trend in the northwest subregion. All extreme temperature indices showed warming trends at most stations; a higher warming slope in extreme temperature mainly occurred along the northeast border and northwest border and in the central-southern mountain area. As extreme low temperature events decrease, vegetation damage due to freezing temperatures will reduce and low cold-tolerant plants may expand their distribution range northward to revegetate barren areas in the BTSSR. However, in water-limited areas of the BTSSR, increasing temperatures in the growing season may exacerbate stress associated with plants relying on precipitation due to higher temperatures combining with decreasing precipitation.

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“…The difference between foliage and soil temperature depends on the structure of the canopy, soil moisture, and the solar elevation. Jackson and Idso [1975] found differences between bare soil and air temperature as large as 27øC. For a soybean canopy with 35% ground cover, the soil temperature exceeded the canopy temperature by 11øC and was 15øC higher than air temperature [Kimes, 1980].…”

Section: Origin Of Tir Radiance Anisotropymentioning

confidence: 97%

Estimation of soil and vegetation temperatures with multiangular thermal infrared observations: IMGRASS, HEIFE, and SGP 1997 experiments

Menenti

et al. 2001

J. Geophys. Res.

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Surface Albedo and Desertification

Cited by 122 publications

References 12 publications

The Impact of Landsat Satellite Monitoring on Conservation Biology

The Impact of Landsat Satellite Monitoring on Conservation Biology

Temporal Trends and Spatial Patterns of Temperature and Its Extremes over the Beijing-Tianjin Sand Source Region (1960–2014), China

Estimation of soil and vegetation temperatures with multiangular thermal infrared observations: IMGRASS, HEIFE, and SGP 1997 experiments

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