Simplified atmospheric radiative transfer modelling for estimating incident PAR using MODIS atmosphere products

Laake, P.E. van; Sánchez‐Azofeifa, Arturo

doi:10.1016/j.rse.2004.03.002

Cited by 89 publications

(43 citation statements)

References 22 publications

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“…While the extraterrestrial radiation budget and its wavelength distribution are well known and relatively constant, the terrestrial reception of PAR is altered by a dynamically changing atmosphere (Van Laake and Sanchez-Azofeifa, 2004). Atmospheric radiative transfer is driven by absorption, molecular (Raleigh) and particle (Mie) scattering effects attenuating the amount of solar radiation received by the earth surface (Szeicz, 1974;B C A Rao, 1984;Baker and Frouin, 1987).…”

Section: Photosynthetically Active Radiationmentioning

confidence: 99%

“…The MODIS Atmospheric Profile products (MOD04-MOD07) consist of total-ozone burden, atmospheric stability, temperature and moisture profiles, and atmospheric water vapour, measured on a daily basis. Even though the atmospheric interactions of solar irradiance are well understood, a standardized product providing regular observations of global PAR is currently not available (Liang et al, 2006), however, techniques to derive accurate estimates of global PAR using MODIS have been developed (Van Laake and Sanchez-Azofeifa, 2004;Liang et al 2006).…”

Section: Photosynthetically Active Radiationmentioning

confidence: 99%

See 1 more Smart Citation

The use of remote sensing in light use efficiency based models of gross primary production: A review of current status and future requirements

Hilker

Coops

Wulder

et al. 2008

Science of The Total Environment

259

187

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Section: Photosynthetically Active Radiationmentioning

confidence: 99%

Section: Photosynthetically Active Radiationmentioning

confidence: 99%

The use of remote sensing in light use efficiency based models of gross primary production: A review of current status and future requirements

Hilker

Coops

Wulder

et al. 2008

Science of The Total Environment

259

187

View full text Add to dashboard Cite

“…In order for the methodology to be used on an operational basis, these parameters have to be available from satellite at the same resolution as the VIs and FAPAR. Sanchez-Azofeifa (2004, 2005) presented a method which gives incident PAR by implementation of a simple radiative transfer model where the amount of PAR is a function of the solar constant, solar zenith angle and the atmospheric transmittance, which in turn is cal- culated using daily atmospheric data from the MODIS sensor onboard the NASA platforms Terra and Aqua. implemented the method for Scandinavian conditions and found that five day averages of PAR could be operationally obtained with an r 2 of 83% at Norunda and 74% at Asa.…”

Section: Operational Remote Sensing Of Apar and Atmentioning

confidence: 99%

Towards operational remote sensing of forest carbon balance across Northern Europe

et al. 2008

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Abstract.Monthly averages of ecosystem respiration (ER), gross primary production (GPP) and net ecosystem exchange (NEE) over Scandinavian forest sites were estimated using regression models driven by air temperature (AT), absorbed photosynthetically active radiation (APAR) and vegetation indices. The models were constructed and evaluated using satellite data from Terra/MODIS and measured data collected at seven flux tower sites in northern Europe. Data used for model construction was excluded from the evaluation. Relationships between ground measured variables and the independent variables were investigated.It was found that the enhanced vegetation index (EVI) at 250 m resolution was highly noisy for the coniferous sites, and hence, 1 km EVI was used for the analysis. Linear relationships between EVI and the biophysical variables were found: correlation coefficients between EVI and GPP, NEE, and AT ranged from 0.90 to 0.79 for the deciduous data, and from 0.85 to 0.67 for the coniferous data. Due to saturation, there were no linear relationships between normalized difference vegetation index (NDVI) and the ground measured parameters found at any site. APAR correlated better with the parameters in question than the vegetation indices. Modeled GPP and ER were in good agreement with measured values, with more than 90% of the variation in measured GPP and ER being explained by the coniferous models. The site-specific respiration rate at 10 • C (R 10 ) was needed Correspondence to: P. Olofsson (olofsson@bu.edu) for describing the ER variation between sites. Even though monthly NEE was modeled with less accuracy than GPP, 61% and 75% (dec. and con., respectively) of the variation in the measured time series was explained by the model. These results are important for moving towards operational remote sensing of forest carbon balance across Northern Europe.

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“…Therefore, they are important variables in vegetation dynamics and climate change modelling [1,2], as well as key indicators of drought [3]. The solar radiation budget, also called net solar radiation, is defined as the difference between incident and reflected shortwave radiative fluxes at the Earth's surface [4].…”

Section: Introductionmentioning

confidence: 99%

Estimation of Daily Solar Radiation Budget at Kilometer Resolution over the Tibetan Plateau by Integrating MODIS Data Products and a DEM

Roupioz

Nerry

et al. 2016

Remote Sensing

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Considering large and complex areas like the Tibetan Plateau, an analysis of the spatial distribution of the solar radiative budget over time not only requires the use of satellite remote sensing data, but also of an algorithm that accounts for strong variations of topography. Therefore, this research aims at developing a method to produce time series of solar radiative fluxes at high temporal and spatial resolution based on observed surface and atmosphere properties and topography. The objective is to account for the heterogeneity of the land surface using multiple land surface and atmospheric MODIS data products combined with a digital elevation model to produce estimations daily at the kilometric level. The developed approach led to the production of a three-year time series (2008)(2009)(2010) of daily solar radiation budget at one kilometer spatial resolution across the Tibetan Plateau. The validation showed that the main improvement from the proposed method is a higher spatial and temporal resolution as compared to existing products. However, even if the solar radiation estimates are satisfying on clear sky conditions, the algorithm is less reliable under cloudy sky condition and the albedo product used here has a too coarse temporal resolution and is not accurate enough over rugged terrain.

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Simplified atmospheric radiative transfer modelling for estimating incident PAR using MODIS atmosphere products

Cited by 89 publications

References 22 publications

The use of remote sensing in light use efficiency based models of gross primary production: A review of current status and future requirements

The use of remote sensing in light use efficiency based models of gross primary production: A review of current status and future requirements

Towards operational remote sensing of forest carbon balance across Northern Europe

Estimation of Daily Solar Radiation Budget at Kilometer Resolution over the Tibetan Plateau by Integrating MODIS Data Products and a DEM

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