Details
| Original language | English |
|---|---|
| Article number | 19822 |
| Journal | Scientific reports |
| Volume | 11 |
| Issue number | 1 |
| Publication status | Published - 6 Oct 2021 |
Abstract
Surface albedo is an important forcing parameter that drives the radiative energy budget as it determines the fraction of the downwelling solar irradiance that the surface reflects. Here we report on ground-based measurements of the spectral albedo (350–2200 nm) carried out at 20 sites across a North–South transect of approximately 1300 km in the Atacama Desert, from latitude 18° S to latitude 30° S. These spectral measurements were used to evaluate remote sensing estimates of the albedo derived from the Moderate Resolution Imaging Spectroradiometer (MODIS). We found that the relative mean bias error (RMBE) of MODIS-derived estimates was within ± 5% of ground-based measurements in most of the Atacama Desert (18–27° S). Although the correlation between MODIS-derived estimates and ground-based measurements remained relatively high (R= 0.94), RMBE values were slightly larger in the southernmost part of the desert (27–30° S). Both MODIS-derived data and ground-based measurements show that the albedo at some bright spots in the Atacama Desert may be high enough (up to 0.25 in visible range) for considerably boosting the performance of bifacial photovoltaic technologies (6–12%).
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In: Scientific reports, Vol. 11, No. 1, 19822, 06.10.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Evaluation of MODIS-derived estimates of the albedo over the Atacama Desert using ground-based spectral measurements
AU - Cordero, Raúl R.
AU - Feron, Sarah
AU - Sepúlveda, Edgardo
AU - Damiani, Alessandro
AU - Carrera, Juan M.
AU - Jorquera, Jose
AU - Alfonso, Juan A.
AU - Fuenzalida, Rosalino
AU - Rivas, Miguel
AU - MacDonell, Shelley
AU - Seckmeyer, Gunther
AU - Wang, Chenghao
AU - Ouyang, Zutao
AU - Lhermitte, Stef
PY - 2021/10/6
Y1 - 2021/10/6
N2 - Surface albedo is an important forcing parameter that drives the radiative energy budget as it determines the fraction of the downwelling solar irradiance that the surface reflects. Here we report on ground-based measurements of the spectral albedo (350–2200 nm) carried out at 20 sites across a North–South transect of approximately 1300 km in the Atacama Desert, from latitude 18° S to latitude 30° S. These spectral measurements were used to evaluate remote sensing estimates of the albedo derived from the Moderate Resolution Imaging Spectroradiometer (MODIS). We found that the relative mean bias error (RMBE) of MODIS-derived estimates was within ± 5% of ground-based measurements in most of the Atacama Desert (18–27° S). Although the correlation between MODIS-derived estimates and ground-based measurements remained relatively high (R= 0.94), RMBE values were slightly larger in the southernmost part of the desert (27–30° S). Both MODIS-derived data and ground-based measurements show that the albedo at some bright spots in the Atacama Desert may be high enough (up to 0.25 in visible range) for considerably boosting the performance of bifacial photovoltaic technologies (6–12%).
AB - Surface albedo is an important forcing parameter that drives the radiative energy budget as it determines the fraction of the downwelling solar irradiance that the surface reflects. Here we report on ground-based measurements of the spectral albedo (350–2200 nm) carried out at 20 sites across a North–South transect of approximately 1300 km in the Atacama Desert, from latitude 18° S to latitude 30° S. These spectral measurements were used to evaluate remote sensing estimates of the albedo derived from the Moderate Resolution Imaging Spectroradiometer (MODIS). We found that the relative mean bias error (RMBE) of MODIS-derived estimates was within ± 5% of ground-based measurements in most of the Atacama Desert (18–27° S). Although the correlation between MODIS-derived estimates and ground-based measurements remained relatively high (R= 0.94), RMBE values were slightly larger in the southernmost part of the desert (27–30° S). Both MODIS-derived data and ground-based measurements show that the albedo at some bright spots in the Atacama Desert may be high enough (up to 0.25 in visible range) for considerably boosting the performance of bifacial photovoltaic technologies (6–12%).
UR - http://www.scopus.com/inward/record.url?scp=85116409148&partnerID=8YFLogxK
U2 - 10.1038/s41598-021-98622-4
DO - 10.1038/s41598-021-98622-4
M3 - Article
C2 - 34615892
AN - SCOPUS:85116409148
VL - 11
JO - Scientific reports
JF - Scientific reports
SN - 2045-2322
IS - 1
M1 - 19822
ER -