Northeast Atlantic Ocean, Loire River, DIVAnd 4D seasonal analysis of Water body dissolved inorganic nitrogen 1971/2021 v2023 [time][depth][lat][lon], 1996

Northeast Atlantic Ocean - Loire River - DIVAnd 4D seasonal analysis of Water body dissolved inorganic nitrogen 1971/2021 v2023. Seasonal climatology of Water body dissolved inorganic nitrogen for Loire river for the period 1971-2021 and for the following seasons:
- winter: January-March,
- spring: April-June,
- summer: July-September,
- autumn: October-December.
Observation data span from 1971 to 2021.
Depth levels (m): [0.0, 2.0, 4.0, 6.0, 8.0, 10.0, 15.0, 20.0, 25.0, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0, 110.0, 120.0, 130.0].
Data sources: observational data from SeaDataNet/EMODNet Chemistry Data Network.
Description of DIVAnd analysis: the computation was done with DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.4, using GEBCO 15 sec topography for the spatial connectivity of water masses. The horizontal resolution of the produced DIVAnd maps is 0.01 degrees. Horizontal correlation length is defined seasonally (in meters): 72000 (winter), 43000 (spring), 215000 (summer), 150000 (autumn). Vertical correlation length was optimized and vertically filtered and a seasonally-averaged profile was used (DIVAnd.fitvertlen). Signal-to-noise ratio was fixed to 1 for vertical profiles and 0.1 for time series to account for the redundancy in the time series observations. A logarithmic transformation (DIVAnd.loglin) was applied to the data prior to the analysis. Background field: the vertically-filtered data mean profile is substracted from the data. Detrending of data: no, advection constraint applied: no.
Units: umol/l.
abstract=Seasonal climatology of Water body dissolved inorganic nitrogen for Loire river for the period 1971-2021 and for the following seasons:
- winter: January-March,
- spring: April-June,
- summer: July-September,
- autumn: October-December.
Observation data span from 1971 to 2021.
Depth levels (m): [0.0, 2.0, 4.0, 6.0, 8.0, 10.0, 15.0, 20.0, 25.0, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0, 110.0, 120.0, 130.0].
Data sources: observational data from SeaDataNet/EMODNet Chemistry Data Network.
Description of DIVAnd analysis: the computation was done with DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.4, using GEBCO 15 sec topography for the spatial connectivity of water masses. The horizontal resolution of the produced DIVAnd maps is 0.01 degrees. Horizontal correlation length is defined seasonally (in meters): 72000 (winter), 43000 (spring), 215000 (summer), 150000 (autumn). Vertical correlation length was optimized and vertically filtered and a seasonally-averaged profile was used (DIVAnd.fitvertlen). Signal-to-noise ratio was fixed to 1 for vertical profiles and 0.1 for time series to account for the redundancy in the time series observations. A logarithmic transformation (DIVAnd.loglin) was applied to the data prior to the analysis. Background field: the vertically-filtered data mean profile is substracted from the data. Detrending of data: no, advection constraint applied: no.
Units: umol/l.
Acknowledgements=Aggregated data products are generated by EMODnet Chemistry under the support of DG MARE Call for Tenders EASME/2020/OP/0006 (EASME/EMFF/2020/3.1.11/Lot 5/SI2.846161).
area_keywords=Northeast Atlantic Ocean (40W)
area_keywords_urn=SDN:C19::SVX00015
Author_email=Quitterie CAZENAVE <[e-mail]> Julie GATTI <[e-mail]>
bathymetry_source=resolution: 0.1 degree, based on the global GEBCO Digital Atlas, 30 sec, 2014
cdm_data_type=Grid
citation=Usage is subject to mandatory citation: "This resource was generated in the framework of EMODnet Chemistry, under the support of DG MARE Call for Tender EASME/EMFF/2020/3.1.11/European Marine Observation and Data Network (EMODnet) - Lot 5 - Chemistry"
Conventions=CF-1.6, COARDS, ACDD-1.3
date=2023-05-16T17:48:27.701
DIVA_references=Barth, A., Beckers, J.-M., Troupin, C., Alvera-Azcarate, A., and Vandenbulcke, L. (2014): divand-1.0: n-dimensional variational data analysis for ocean observations, Geosci. Model Dev., 7, 225-241, doi: 10.5194/gmd-7-225-2014
DIVAnd_code_doi=10.5281/zenodo.7016823
DIVAnd_references=Barth, A.; Beckers, J.-M.; Troupin, C.; Alvera-Azcarate, A & Vandenbulcke, L. divand-1.0: n-dimensional variational data analysis for ocean observations. Geoscientific Model Development, 2014, 7, 225-241. DOI: 10.5194/gmd-7-225-2014
DIVAnd_source=https://github.com/gher-uliege/DIVAnd.jl
DIVAnd_version=v2.7.9
doi=https://doi.org/10.13120/02a960b4-15f8-450e-ae23-af3616ca3ee3
Easternmost_Easting=-1.0099315643310547
file_name=Water_body_dissolved_inorganic_nitrogen.nc
geospatial_lat_max=47.99970626831055
geospatial_lat_min=46.25
geospatial_lat_resolution=0.009998321533203125
geospatial_lat_units=degrees_north
geospatial_lon_max=-1.0099315643310547
geospatial_lon_min=-4.010000228881836
geospatial_lon_resolution=0.010000228881835938
geospatial_lon_units=degrees_east
history=Tue Aug 29 17:02:49 2023: ncks -O Water_body_dissolved_inorganic_nitrogen.nc Water_body_dissolved_inorganic_nitrogen.nc
id=DatasetScan/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_dissolved_inorganic_nitrogen.nc
infoUrl=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_dissolved_inorganic_nitrogen.nc.html
institution=IFREMER, SISMER, Scientific Information Systems for the SEA
institution_urn=SDN:EDMO::486
NCO=netCDF Operators version 4.9.9 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)
Northernmost_Northing=47.99970626831055
parameter_keyword=Water body dissolved inorganic nitrogen
parameter_keyword_urn=SDN:P35::EPC00198
product_code=Loire-Water_body_dissolved_inorganic_nitrogen-v2023-ANA
product_id=02a960b4-15f8-450e-ae23-af3616ca3ee3
project=EMODNET Chemistry - Phase 5
search_keywords=Dissolved inorganic nitrogen concentration in the water column
search_keywords_urn=SDN:P02::TDIN
source=observational data from SeaDataNet/EMODnet Chemistry Data Network
sourceUrl=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_dissolved_inorganic_nitrogen.nc
Southernmost_Northing=46.25
standard_name_vocabulary=CF Standard Name Table v70
time_coverage_end=1996-11-16T00:00:00Z
time_coverage_start=1996-02-16T00:00:00Z
Westernmost_Easting=-4.010000228881836

东北大西洋海域-卢瓦尔河-1971/2021年DIVAnd 4D季节性水体溶解无机氮分析。1971-2021年及后续季节（冬季：一月至三月，春季：四月至六月，夏季：七月至九月，秋季：十月至十二月）卢瓦尔河水体溶解无机氮的季节性气候学分析。
观测数据时间跨度为1971年至2021年。
深度级别（米）：[0.0, 2.0, 4.0, 6.0, 8.0, 10.0, 15.0, 20.0, 25.0, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0, 110.0, 120.0, 130.0]。
数据来源：来自SeaDataNet/EMODNet 化学数据网络的观测数据。
DIVAnd分析描述：计算采用DIVAnd（n维数据插值变分分析）版本2.7.4，利用GEBCO 15秒地形数据确定水体的空间连通性。生成的DIVAnd地图的水平分辨率为0.01度。水平相关长度按季节定义（以米为单位）：冬季72000，春季43000，夏季215000，秋季150000。垂直相关长度进行了优化，并垂直过滤，使用了季节平均剖面（DIVAnd.fitvertlen）。为了补偿时间序列观测中的冗余，将信号与噪声比固定为垂直剖面的1和时序的0.1。在分析之前对数据应用了对数变换（DIVAnd.loglin）。背景场：从数据中减去垂直过滤的数据平均值剖面。未进行数据趋势消除，未应用平流约束。
单位：umol/l。
摘要=1971-2021年及后续季节（冬季：一月至三月，春季：四月至六月，夏季：七月至九月，秋季：十月至十二月）卢瓦尔河水体溶解无机氮的季节性气候学分析。观测数据时间跨度为1971年至2021年。深度级别（米）：[0.0, 2.0, 4.0, 6.0, 8.0, 10.0, 15.0, 20.0, 25.0, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0, 110.0, 120.0, 130.0]。数据来源：来自SeaDataNet/EMODNet 化学数据网络的观测数据。DIVAnd分析描述：计算采用DIVAnd（n维数据插值变分分析）版本2.7.4，利用GEBCO 15秒地形数据确定水体的空间连通性。生成的DIVAnd地图的水平分辨率为0.01度。水平相关长度按季节定义（以米为单位）：冬季72000，春季43000，夏季215000，秋季150000。垂直相关长度进行了优化，并垂直过滤，使用了季节平均剖面（DIVAnd.fitvertlen）。为了补偿时间序列观测中的冗余，将信号与噪声比固定为垂直剖面的1和时序的0.1。在分析之前对数据应用了对数变换（DIVAnd.loglin）。背景场：从数据中减去垂直过滤的数据平均值剖面。未进行数据趋势消除，未应用平流约束。
致谢=聚合数据产品由EMODnet Chemistry在DG MARE 招标请求EASME/2020/OP/0006（EASME/EMFF/2020/3.1.11/Lot 5/SI2.846161）的支持下生成。
区域关键词=东北大西洋海域（40W）
作者电子邮件=Quitterie CAZENAVE <[e-mail]> Julie GATTI <[e-mail]>
海底地形来源=分辨率：0.1度，基于全球GEBCO数字地图，30秒，2014年
数据类型=网格
引用=使用受限于强制引用：
"本资源是在EMODnet Chemistry框架内生成的，在DG MARE 招标请求EASME/EMFF/2020/3.1.11
欧洲海洋观测与数据网络（EMODnet）-Lot 5-化学
的支持下。
约定=CF-1.6, COARDS, ACDD-1.3
日期=2023-05-16T17:48:27.701
DIVA参考文献=Barth, A., Beckers, J.-M., Troupin, C., Alvera-Azcarate, A., and Vandenbulcke, L. (2014): divand-1.0: n-dimensional variational data analysis for ocean observations, Geosci. Model Dev., 7, 225-241, doi: 10.5194/gmd-7-225-2014
DIVAnd代码DOI=10.5281/zenodo.7016823
DIVA参考文献=Barth, A.; Beckers, J.-M.; Troupin, C.; Alvera-Azcarate, A & Vandenbulcke, L. divand-1.0: n-dimensional variational data analysis for ocean observations. Geoscientific Model Development, 2014, 7, 225-241. DOI: 10.5194/gmd-7-225-2014
DIVAnd源代码=https://github.com/gher-uliege/DIVAnd.jl
DIVAnd版本=v2.7.9
DOI=https://doi.org/10.13120/02a960b4-15f8-450e-ae23-af3616ca3ee3
最东经=-1.0099315643310547
文件名=Water_body_dissolved_inorganic_nitrogen.nc
地理空间纬度最大值=47.99970626831055
地理空间纬度最小值=46.25
地理空间纬度分辨率=0.009998321533203125
地理空间纬度单位=北纬度
地理空间经度最大值=-1.0099315643310547
地理空间经度最小值=-4.010000228881836
地理空间经度分辨率=0.010000228881835938
地理空间经度单位=东经
历史记录=Tue Aug 29 17:02:49 2023: ncks -O Water_body_dissolved_inorganic_nitrogen.nc Water_body_dissolved_inorganic_nitrogen.nc
ID=DatasetScan/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_dissolved_inorganic_nitrogen.nc
信息URL=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_dissolved_inorganic_nitrogen.nc.html
机构=IFREMER, SISMER, 海洋科学信息系统
机构URN=SDN:EDMO::486
NCO=netCDF Operators版本4.9.9（主页 = http://nco.sf.net，代码 = https://github.com/nco/nco）
最北纬=47.99970626831055
参数关键词=水体溶解无机氮
参数关键词URN=SDN:P35::EPC00198
产品代码=Loire-Water_body_dissolved_inorganic_nitrogen-v2023-ANA
产品ID=02a960b4-15f8-450e-ae23-af3616ca3ee3
项目=EMODNET Chemistry - 第五阶段
搜索关键词=水柱中溶解无机氮浓度
搜索关键词URN=SDN:P02::TDIN
来源=来自SeaDataNet/EMODnet 化学数据网络的观测数据
来源URL=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_dissolved_inorganic_nitrogen.nc
最南纬=46.25
标准名称词汇=CF标准名称表v70
时间覆盖结束=1996-11-16T00:00:00Z
时间覆盖开始=1996-02-16T00:00:00Z
最西经=-4.010000228881836