Intercomparison, interpretation, and assessment of spring phenology in North America estimated from remote sensing for 1982-2006
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774 citations
Cites background from "Intercomparison, interpretation, an..."
...Recently, White et al. (2009) reported that in order to evaluate variations in growing seasons, it is important to compare various methods of calculating changes in growing seasons by using different variables for the calculations (e.g., temperature, soil, and snow)....
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...Beyond the local focus, many authors have analyzed the satellite-measured normalized difference vegetation index (NDVI), which indicates global or hemispheric changes in growing seasons (e.g., Myneni et al., 1997; Zhou et al., 2001; Gong & Ho, 2003; de Beurs & Henebry, 2005; 2008; Jeong et al., 2009a; White et al., 2009)....
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...Analysis of historical data for up to 1000 sites in Europe also suggested that spring has advanced at the rate of 5 days decade (1), whereas in some parts of eastern Europe, it has been delayed by 2 days decade 1 (Menzel & Fabian, 1999; Ahas et al., 2002; Chmielewski & Rötzer, 2002; White et al., 2009)....
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...…of historical data for up to 1000 sites in Europe also suggested that spring has advanced at the rate of 5 days decade 1, whereas in some parts of eastern Europe, it has been delayed by 2 days decade 1 (Menzel & Fabian, 1999; Ahas et al., 2002; Chmielewski & Rötzer, 2002; White et al., 2009)....
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...The method proposed in this study is qualitatively consistent with previous studies (e.g., Piao et al., 2006; Jeong et al., 2009a; White et al., 2009)....
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750 citations
Cites background or methods from "Intercomparison, interpretation, an..."
...The phenological phases observed by remote sensing‐based landscape scale approaches and by in situ species‐level observations can be different (Jeong, Ho, et al., 2013b; White et al., 2009)....
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...Modeling studies have shown that an exten‐ sion of 1‐day in growing season length can increase annual GPP of northern ecosystems by 0.5%–0.6% (Piao et al., 2007; White et al., 2009)....
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...…the quality of NDVI or EVI datasets, (b) fitting one or multiple func‐ tions to the seasonal NDVI or EVI patterns, and (c) identifying the start and end dates of the growing season using either predeter‐ mined thresholds or inflection points (Liu, Fu, Zeng, et al., 2016a; White et al., 2009)....
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...…spatial resolution of satellite data (ranging from 30 m to several kil‐ ometers) can make the retrieval and interpretation of phenological dates particularly challenging in mixed canopies where a mixture of species in different phenological phases co‐occur at the same time (White et al., 2009)....
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750 citations
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References
7,657 citations
"Intercomparison, interpretation, an..." refers background in this paper
...…of the timing of recurring biological cycles and their connection to climate, is experiencing a renaissance in global change science as it is providing society with an independent measure on how ecosystems are responding to climate change (Badeck et al., 2004; Linderholm, 2006; Parmesan, 2006)....
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...Phenology, the study of the timing of recurring biological cycles and their connection to climate, is experiencing a renaissance in global change science as it is providing society with an independent measure on how ecosystems are responding to climate change (Badeck et al., 2004; Linderholm, 2006; Parmesan, 2006)....
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4,701 citations
"Intercomparison, interpretation, an..." refers background in this paper
...Climate warming and earlier spring growth in combination with forest fuel buildup in the south-western united states also has resulted in an increasing number of large and severe wildfires (Westerling et al., 2006)....
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3,368 citations
"Intercomparison, interpretation, an..." refers methods or result in this paper
...In the Gaussian method (closely related to an earlier Weibull curve approach, (Myneni et al., 1997)), which we applied at the level 3 ecoregion level (Fig....
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...Satellite SOS trend estimates are limited by a short record (Myneni et al., 1997) and are thus often incomparable with longer, climatically driven analyses....
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3,162 citations
"Intercomparison, interpretation, an..." refers background in this paper
...Annually integrated net ecosystem CO2 exchange of deciduous vegetation is strongly related to length of the carbon uptake period (Baldocchi et al., 2001): springtime warming advances phenology, accelerates carbon uptake and reduces the amount of CO2 in the atmosphere....
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3,080 citations
"Intercomparison, interpretation, an..." refers methods in this paper
...For the model fit methods, we first used the Quadratic method (de Beurs & Henebry, 2008) and a model of the form NDVI ¼ aþ bAGDDþ gAGDD2; ð2Þ where AGDD are the accumulated growing degreedays in 1C calculated from the North American Regional Reanalysis (Mesinger et al., 2006)....
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