Matches in SemOpenAlex for { <https://semopenalex.org/work/W3088952226> ?p ?o ?g. }
- W3088952226 endingPage "3122" @default.
- W3088952226 startingPage "3122" @default.
- W3088952226 abstract "Leaf area is a key parameter underpinning ecosystem carbon, water and energy exchanges via photosynthesis, transpiration and absorption of radiation, from local to global scales. Satellite-based Earth Observation (EO) can provide estimates of leaf area index (LAI) with global coverage and high temporal frequency. However, the error and bias contained within these EO products and their variation in time and across spatial resolutions remain poorly understood. Here, we used nearly 8000 in situ measurements of LAI from six forest environments in southern China to evaluate the magnitude, uncertainty, and dynamics of three widely used EO LAI products. The finer spatial resolution GEOV3 PROBA-V 300 m LAI product best estimates the observed LAI from a multi-site dataset (R2 = 0.45, bias = −0.54 m2 m−2, RMSE = 1.21 m2 m−2) and importantly captures canopy dynamics well, including the amplitude and phase. The GEOV2 PROBA-V 1 km LAI product performed the next best (R2 = 0.36, bias = −2.04 m2 m−2, RMSE = 2.32 m2 m−2) followed by MODIS 500 m LAI (R2 = 0.20, bias = −1.47 m2 m−2, RMSE = 2.29 m2 m−2). The MODIS 500 m product did not capture the temporal dynamics observed in situ across southern China. The uncertainties estimated by each of the EO products are substantially smaller (3–5 times) than the observed bias for EO products against in situ measurements. Thus, reported product uncertainties are substantially underestimated and do not fully account for their total uncertainty. Overall, our analysis indicates that both the retrieval algorithm and spatial resolution play an important role in accurately estimating LAI for the dense canopy forests in Southern China. When constraining models of the carbon cycle and other ecosystem processes are run, studies should assume that current EO product LAI uncertainty estimates underestimate their true uncertainty value." @default.
- W3088952226 created "2020-10-01" @default.
- W3088952226 creator A5010287989 @default.
- W3088952226 creator A5039229966 @default.
- W3088952226 creator A5054757744 @default.
- W3088952226 creator A5084224031 @default.
- W3088952226 creator A5084837039 @default.
- W3088952226 creator A5089804494 @default.
- W3088952226 date "2020-09-23" @default.
- W3088952226 modified "2023-10-05" @default.
- W3088952226 title "Characterizing the Error and Bias of Remotely Sensed LAI Products: An Example for Tropical and Subtropical Evergreen Forests in South China" @default.
- W3088952226 cites W1779399445 @default.
- W3088952226 cites W1965834331 @default.
- W3088952226 cites W1968235624 @default.
- W3088952226 cites W1979967512 @default.
- W3088952226 cites W1982390415 @default.
- W3088952226 cites W1983799148 @default.
- W3088952226 cites W1985864794 @default.
- W3088952226 cites W1987139340 @default.
- W3088952226 cites W1990128059 @default.
- W3088952226 cites W1990599481 @default.
- W3088952226 cites W2007285204 @default.
- W3088952226 cites W2014156620 @default.
- W3088952226 cites W2017077556 @default.
- W3088952226 cites W2023335004 @default.
- W3088952226 cites W2024759588 @default.
- W3088952226 cites W2026131335 @default.
- W3088952226 cites W2026871047 @default.
- W3088952226 cites W2037561217 @default.
- W3088952226 cites W2038136715 @default.
- W3088952226 cites W2041906034 @default.
- W3088952226 cites W2048040783 @default.
- W3088952226 cites W2050979718 @default.
- W3088952226 cites W2054102182 @default.
- W3088952226 cites W2056395995 @default.
- W3088952226 cites W2058214432 @default.
- W3088952226 cites W2060717807 @default.
- W3088952226 cites W2073580356 @default.
- W3088952226 cites W2079759406 @default.
- W3088952226 cites W2090379587 @default.
- W3088952226 cites W2090851353 @default.
- W3088952226 cites W2097110832 @default.
- W3088952226 cites W2107258091 @default.
- W3088952226 cites W2109030838 @default.
- W3088952226 cites W2122445110 @default.
- W3088952226 cites W2124399548 @default.
- W3088952226 cites W2128397850 @default.
- W3088952226 cites W2128405001 @default.
- W3088952226 cites W2128622098 @default.
- W3088952226 cites W2130267033 @default.
- W3088952226 cites W2136032982 @default.
- W3088952226 cites W2137810258 @default.
- W3088952226 cites W2139429070 @default.
- W3088952226 cites W2139553891 @default.
- W3088952226 cites W2144121839 @default.
- W3088952226 cites W2151456308 @default.
- W3088952226 cites W2155138877 @default.
- W3088952226 cites W2160794506 @default.
- W3088952226 cites W2161491521 @default.
- W3088952226 cites W2161568916 @default.
- W3088952226 cites W2166309838 @default.
- W3088952226 cites W2167248655 @default.
- W3088952226 cites W2196391350 @default.
- W3088952226 cites W2235433805 @default.
- W3088952226 cites W2258277964 @default.
- W3088952226 cites W2289244918 @default.
- W3088952226 cites W2295815798 @default.
- W3088952226 cites W2295904668 @default.
- W3088952226 cites W2344328155 @default.
- W3088952226 cites W2345175558 @default.
- W3088952226 cites W2401450886 @default.
- W3088952226 cites W2415804616 @default.
- W3088952226 cites W2424431479 @default.
- W3088952226 cites W2463616135 @default.
- W3088952226 cites W2558229608 @default.
- W3088952226 cites W2566966155 @default.
- W3088952226 cites W2574826698 @default.
- W3088952226 cites W2581644994 @default.
- W3088952226 cites W2590592654 @default.
- W3088952226 cites W2600952104 @default.
- W3088952226 cites W2730922943 @default.
- W3088952226 cites W2734403743 @default.
- W3088952226 cites W2777323490 @default.
- W3088952226 cites W2777952969 @default.
- W3088952226 cites W2791363193 @default.
- W3088952226 cites W2793643869 @default.
- W3088952226 cites W2801265418 @default.
- W3088952226 cites W2801578709 @default.
- W3088952226 cites W2804315751 @default.
- W3088952226 cites W2810886818 @default.
- W3088952226 cites W2889765327 @default.
- W3088952226 cites W2911346190 @default.
- W3088952226 cites W2922633580 @default.
- W3088952226 cites W2929218776 @default.
- W3088952226 cites W2943316090 @default.
- W3088952226 cites W2945198004 @default.
- W3088952226 cites W2955817536 @default.
- W3088952226 cites W2971653617 @default.