Northeast Atlantic Ocean, Loire River, DIVAnd 4D seasonal analysis of Water body silicate 1950/2021 v2023 [time][lat][lon], 1985

Northeast Atlantic Ocean - Loire River - DIVAnd 4D seasonal analysis of Water body silicate 1950/2021 v2023. Seasonal climatology of Water body silicate for Loire river for the period 1950-2021 and for the following seasons:
- winter: January-March,
- spring: April-June,
- summer: July-September,
- autumn: October-December.
Observation data span from 1950 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): 133000 (winter), 180000 (spring), 150000 (summer), 210000 (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 silicate for Loire river for the period 1950-2021 and for the following seasons:
- winter: January-March,
- spring: April-June,
- summer: July-September,
- autumn: October-December.
Observation data span from 1950 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): 133000 (winter), 180000 (spring), 150000 (summer), 210000 (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/10.13120/2b30d0f9-6f1e-49cd-b237-f01cc7c70d2e
Easternmost_Easting=-1.0099315643310547
file_name=Water_body_silicate.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 17:02:48 2023: ncks -O Water_body_silicate.nc Water_body_silicate.nc
id=DatasetScan/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_silicate.nc
infoUrl=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_silicate.nc.html
institution=IFREMER, SISMER, Scientific Information Systems for the SEA
institution_urn=SDN:EDMO::486
keywords_vocabulary=GCMD Science Keywords
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 silicate
parameter_keyword_urn=SDN:P35::EPC00008
product_code=Loire-Water_body_silicate-v2023-ANA
product_id=2b30d0f9-6f1e-49cd-b237-f01cc7c70d2e
project=EMODNET Chemistry - Phase 5
search_keywords=Silicate concentration parameters in the water column
search_keywords_urn=SDN:P02::SLCA
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_silicate.nc
Southernmost_Northing=46.25
standard_name_vocabulary=CF Standard Name Table v70
time_coverage_end=1985-11-16T00:00:00Z
time_coverage_start=1985-02-16T00:00:00Z
Westernmost_Easting=-4.010000228881836

东北大西洋海域 - 罗讷河 - DIVAnd 四维季节性水体硅酸盐分析（1950/2021 年版，2023）。针对罗讷河流域1950年至2021年期间及其后续季节的水体硅酸盐的季节性气候学分析：
- 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

观测数据时间跨度为1950年至2021年。
深度层级（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秒地形数据构建水体空间连通性。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）：冬季为133000，春季为180000，夏季为150000，秋季为210000。垂直相关长度经过优化，并进行了垂直过滤，使用季节平均剖面（DIVAnd.fitvertlen）。为应对时间序列观测中的冗余，将信噪比固定为垂直剖面1，时间序列0.1。在分析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后的数据平均剖面。数据去趋势：否，应用平流约束：否。
单位：umol/l。
摘要=罗讷河流域1950-2021年及其后续季节的水体硅酸盐的季节性气候学分析：
- 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

观测数据时间跨度为1950年至2021年。
深度层级（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秒地形数据构建水体空间连通性。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）：冬季为133000，春季为180000，夏季为150000，秋季为210000。垂直相关长度经过优化，并进行了垂直过滤，使用季节平均剖面（DIVAnd.fitvertlen）。为应对时间序列观测中的冗余，将信噪比固定为垂直剖面1，时间序列0.1。在分析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后的数据平均剖面。数据去趋势：否，应用平流约束：否。
单位：umol/l。
致谢=聚合数据产品由EMODnet Chemistry在DG MARE 招标邀请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）
区域关键词_urn=SDN:C19::SVX00015
作者邮箱=Quitterie CAZENAVE <[e-mail]> Julie GATTI <[e-mail]>
水深来源=分辨率：0.1度，基于全球GEBCO数字地图，30秒，2014
数据类型=网格
引用=使用本资源须进行强制引用："本资源是在EMODnet Chemistry框架下生成的，由DG MARE 招标邀请EASME/EMFF/2020/3.1.11/European Marine Observation and Data Network (EMODnet) - Lot 5 - Chemistry支持。"
公约=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
DIVAnd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/10.13120/2b30d0f9-6f1e-49cd-b237-f01cc7c70d2e
最东经=-1.0099315643310547
文件名=Water_body_silicate.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=东经度
历史记录=Mon Aug 29 17:02:48 2023: ncks -O Water_body_silicate.nc Water_body_silicate.nc
ID=DatasetScan/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_silicate.nc
信息URL=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_silicate.nc.html
机构=IFREMER, SISMER, 海洋科学信息系统
机构_urn=SDN:EDMO::486
关键词词汇=GCMD 科学关键词
NCO=netCDF Operators版本4.9.9（主页 = http://nco.sf.net，代码 = https://github.com/nco/nco）
最北纬度=47.99970626831055
参数关键词=水体硅酸盐
参数关键词_urn=SDN:P35::EPC00008
产品代码=Loire-Water_body_silicate-v2023-ANA
产品ID=2b30d0f9-6f1e-49cd-b237-f01cc7c70d2e
项目=EMODNET Chemistry - 第五阶段
搜索关键词=水柱中硅酸盐浓度参数
搜索关键词_urn=SDN:P02::SLCA
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_silicate.nc
最南纬度=46.25
标准名称词汇=CF标准名称表v70
时间覆盖结束=1985-11-16T00:00:00Z
时间覆盖开始=1985-02-16T00:00:00Z
最西经=-4.010000228881836