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Evaluation of MODIS...
Evaluation of MODIS/CERES downwelling shortwave and longwave radiation over global tropical oceans
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- Thandlam, Venugopal (författare)
- ESSO-Indian National Ctr. for Ocean Information Service (India)
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- Rahaman, H. (författare)
- ESSO-Indian National Ctr. for Ocean Information Service (India)
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- Ravichandran, M. (författare)
- ESSO-Indian National Ctr. for Ocean Information Service (India)
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- Ramakrishna, S. S. V. S. (författare)
- Andhra Univ. (India)
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ESSO-Indian National Ctr for Ocean Information Service (India) Andhra Univ. (India) (creator_code:org_t)
- SPIE-Intl Soc Optical Eng, 2016
- 2016
- Engelska.
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Ingår i: Remote Sensing of the Atmosphere, Clouds, and Precipitation VI. - : SPIE-Intl Soc Optical Eng.
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- In the present work, we have evaluated the satellite-estimated daily downwelling shortwave (QI) and longwave (QA) radiation from Moderate Resolution Imaging Spectrometer (MODIS) /Clouds and the Earth's Radiant Energy System (CM) with moored buoy observations of Global Tropical MooredBuoy Array (GTMBA) during 2001-2009. The global observed mean of QI and QA in GTMBA(CM) are 228 (233) W/m2 and 410 (405) W/m2 respectively. The mean QI shows a positive bias (~3-7 W/m2) whereas QA underestimates with a mean negative bias of ~3-6 W/m2 in the tropical Pacific, Atlantic and the Indian Ocean. CM underestimates the buoy observed variability in both QI and QA in all the tropical oceans. The correlation coefficient (CC) values in QI (Qa) are 0.79(0.88) 0.79(0.84) and0.81(0.94) over the Pacific, Atlantic and Indian ocean respectively. The Root Mean Square Error(RMSE) values in QI ranged between 35-43 W/m2 with lowest values in the Atlantic Ocean and highest in the Indian Ocean. The RMSE values in QA are less as compared to QI and it is ~9 W/m2in all the tropical ocean. The spatial distributions of QI and QA shows seasonality with lower and higher values coinciding with the Inter-Tropical Convergence Zone(ITCZ) locations in the QI and QA
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
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