| DOI | 10.1029/2020JC016677
|
| Assessment of SCATSat-1 Scatterometer Winds on the Upper Ocean Simulations in the North Indian Ocean |
| Pramanik S.; Sil S.
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| 发表日期 | 2021
|
| ISSN | 21699275
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| 卷号 | 126期号:6 |
| 英文摘要 | The performance of a new scatterometer SCATSat-1 winds with TropFlux on simulating the upper oceanic processes is analyzed over the northern Indian Ocean (IO) using Regional Ocean Modeling System (ROMS). The nutrient, phytoplankton, zooplankton, and detritus (NPZD) ecosystem model are included for studying the postcyclonic responses on biophysical parameters during three cyclones of different intensities (Maarutha, Mora, and Ockhi) in 2017. The SCATSat-1 (TropFlux) winds showed that skill scores are higher than 0.85 (0.66), and RMSEs are less than 0.48 (1.96) m s−1 with RAMA and OMNI buoy observations. Two SCATSat-1 wind experiments, one with 1/4° (SS-E) and other regridded wind to 1° (SSR-E), are compared with the simulation by TropFlux air-sea fluxes available at 1° (TF-E). Seasonal variability of simulated oceanic parameters in SS-E and SSR-E showed marginal improvement than TF-E as compared with observations. However, SSHA variability associated with downwelling Kelvin waves along the Bay of Bengal coast and southward east India coastal current (EICC) during postmonsoon is better simulated in SCATSat-1 experiments. All experiments showed observed intraseasonal oscillations (30–90 days) with higher variability in thermocline than upper layers at RAMA locations over the equator. On western (eastern) equatorial IO, the signals are stronger during boreal winter (premonsoon) and summer (monsoon). Drop in temperature up to 2.5°C during cyclonic events is reasonably better captured in SS-E and SSR-E than TF-E due to better accuracy in SCATSat-1 winds. During cyclones, surface chlorophyll attained a peak after 5–10 days of cyclone passage in SCATSat-1 winds experiments and satellite observations. © 2021. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | biophysical regional ocean model; intraseasonal oscillations; RAMA and OMNI; scatterometer winds; TropFlux; tropical cyclones |
| 语种 | 英语
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| 来源期刊 | Journal of Geophysical Research: Oceans
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| 文献类型 | 期刊论文
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| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/186258
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| 作者单位 | Ocean Analysis and Modelling Laboratory, School of Earth, Ocean and Climate Sciences, IIT Bhubaneswar, Bhubaneswar, India
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推荐引用方式
GB/T 7714 |
Pramanik S.,Sil S.. Assessment of SCATSat-1 Scatterometer Winds on the Upper Ocean Simulations in the North Indian Ocean[J],2021,126(6).
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| APA |
Pramanik S.,&Sil S..(2021).Assessment of SCATSat-1 Scatterometer Winds on the Upper Ocean Simulations in the North Indian Ocean.Journal of Geophysical Research: Oceans,126(6).
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| MLA |
Pramanik S.,et al."Assessment of SCATSat-1 Scatterometer Winds on the Upper Ocean Simulations in the North Indian Ocean".Journal of Geophysical Research: Oceans 126.6(2021).
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