کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6388148 | 1627760 | 2015 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new river discharge and river temperature climatology data set for the pan-Arctic region
ترجمه فارسی عنوان
داده های تخلیه رودخانه جدید و داده های هواشناسی رودخانه برای منطقه پانکستر
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کلمات کلیدی
اقیانوس قطب شمال، اقلیم شناسی، محتوای گرما، مدل سازی، تخلیه رودخانه، یخ دریایی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
چکیده انگلیسی
We apply the ARDAT data set to a high-resolution regional ocean-ice model, and compare results to a model integration using a 1° resolution discharge data set. Integrated freshwater content on the Arctic shelves (<200 m) increases by â¼3600 km3 in the ARDAT forced model run compared to the coarser forcing, suggesting that river discharge is contained on the Arctic shelves when forced with the ARDAT data set. Modelled summer heat fluxes over the shelves increase by 8 TW when river water temperature is included, which subsequently reduces basin-wide September sea ice extent by â¼10%. Regional differences are larger, where e.g., sea ice extent on the Beaufort shelf is reduced by â¼36%. Using a non-linear free surface parameterization along with the ARDAT data set, we find an increase in the sea surface height gradient around river mouths. Geostrophic velocities increase to form quasi-continuous, fast-moving near-shore boundary currents not reproduced using the 1° resolution data set. Omitting river water temperature, or using a lower resolution data set, can therefore lead to incorrect model estimates of coastal transport, sea ice formation/melt rates, and other regional and basin scale processes. Using a high-resolution discharge data set, and accounting for the considerable heat carried by the Arctic rivers is recommended for future modelling efforts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Modelling - Volume 88, April 2015, Pages 1-15
Journal: Ocean Modelling - Volume 88, April 2015, Pages 1-15
نویسندگان
Jonathan Whitefield, Peter Winsor, James McClelland, Dimitris Menemenlis,