Basin-scale distribution of NH4+ and NO2- in the Pacific Ocean
Basin-scale distribution of NH4+ and NO2- in the Pacific Ocean
复制标题
太平洋 NH4 和 NO2- 的盆地尺度分布
DOI：
10.1007/s10872-017-0433-1
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发表时间：
2017
影响因子：
2.3
通讯作者：
Aoyama Michio
中科院分区：
文献类型：
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作者：
Yasunaka Sayaka;Nojiri Yukihiro;Hashioka Taketo;Yoshikawa Chisato;Kodama Taketoshi;Nakaoka Shin-ichiro;Chiba Sanae;Hashihama Fuminori;Wakita Masahide;Furuya Ken;Sasano Daisuke;Murata Akihiko;Uchida Hiroshi;Aoyama Michio
我们使用了25，000多个营养盐样本，首次阐明了太平洋表面铵（NH 4+）和亚硝酸盐（NO2−）浓度的流域尺度分布和季节变化。NH 4+、NO2−和硝酸盐（NO3−）浓度最高的地区位于北纬40°以北、墨西哥海岸的沿海上升流区和塔斯曼海。NH 4+浓度升高5月至10月在西部亚北极北太平洋，5月至12月在东部亚北极北太平洋，6月至9月在副热带南太平洋。两个半球的NO2−浓度在冬季最高。在亚热带西太平洋，NH 4+的季节变化与NO2-、NO3-和卫星叶绿素浓度同步，而在亚北极地区，NH 4+的季节变化与叶绿素浓度同步，与NO2-、NO3-的季节变化不同步。
We used more than 25,000 nutrient samples to elucidate for the first time basin-scale distributions and seasonal changes of surface ammonium (NH4+) and nitrite (NO2−) concentrations in the Pacific Ocean. The highest NH4+, NO2−, and nitrate (NO3−) concentrations were observed north of 40°N, in the coastal upwelling region off the coast of Mexico, and in the Tasman Sea. NH4+concentrations were elevated during May–October in the western subarctic North Pacific, May–December in the eastern subarctic North Pacific, and June–September in the subtropical South Pacific. NO2−concentrations were highest in winter in both hemispheres. The seasonal cycle of NH4+was synchronous with NO2−, NO3−, and satellite chlorophyllaconcentrations in the western subtropical South Pacific, whereas it was synchronous with chlorophyll-abut out of phase with NO2−and NO3−in the subarctic regions.