Northeast Atlantic Ocean, Loire River, DIVAnd 4D seasonal analysis of Water body chlorophyll-a 1971/2021 v2023 [time][lat][lon], 1996

Northeast Atlantic Ocean - Loire River - DIVAnd 4D seasonal analysis of Water body chlorophyll-a 1971/2021 v2023. Seasonal climatology of Water body chlorophyll-a 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): 14000 (winter), 52000 (spring), 42000 (summer), 125000 (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: mg/m3.
abstract=Seasonal climatology of Water body chlorophyll-a 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): 14000 (winter), 52000 (spring), 42000 (summer), 125000 (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: mg/m3.
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/10.13120/9fc08bf8-e5f9-42a1-b2dd-edcfb898e362
Easternmost_Easting=-1.0099315643310547
file_name=Water_body_chlorophyll-a.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 17:02:50 2023: ncks -O Water_body_chlorophyll-a.nc Water_body_chlorophyll-a.nc
id=DatasetScan/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_chlorophyll-a.nc
infoUrl=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_chlorophyll-a.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 chlorophyll-a
parameter_keyword_urn=SDN:P35::EPC00105
product_code=Loire-Water_body_chlorophyll-a-v2023-ANA
product_id=9fc08bf8-e5f9-42a1-b2dd-edcfb898e362
project=EMODNET Chemistry - Phase 5
search_keywords=Chlorophyll pigment concentrations in water bodies
search_keywords_urn=SDN:P02::CPWC
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_chlorophyll-a.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-基于DIVAnd的1971/2021年水体叶绿素-a的4D季节性分析。1971-2021年间卢瓦尔河水体叶绿素-a的季节性气候学分析，涵盖以下季节：
- 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。
观测数据跨度为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：SeaDataNet/EMODNet化学数据网络提供的观测数据。
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14000米，春季52000米，夏季42000米，秋季125000米。垂直相关长度经过优化，并垂直过滤，使用季节平均剖面（DIVAnd.fitvertlen）。信号与噪声比在垂直剖面上固定为1，在时间序列上固定为0.1，以考虑时间序列观测的冗余。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后的数据平均剖面。数据去趋势：否，应用平流约束：否。
单位：毫克/立方米。
摘要=1971-2021年间卢瓦尔河水体叶绿素-a的季节性气候学分析，涵盖以下季节：
- 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。
观测数据跨度为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：SeaDataNet/EMODNet化学数据网络提供的观测数据。
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14000米，春季52000米，夏季42000米，秋季125000米。垂直相关长度经过优化，并垂直过滤，使用季节平均剖面（DIVAnd.fitvertlen）。信号与噪声比在垂直剖面上固定为1，在时间序列上固定为0.1，以考虑时间序列观测的冗余。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后的数据平均剖面。数据去趋势：否，应用平流约束：否。
单位：毫克/立方米。
致谢：数据产品由EMODnet Chemistry在DG MARE招标支持下生成，招标号EASME/2020/OP/0006（EASME/EMFF/2020/3.1.11/Lot 5/SI2.846161）。
区域关键词：东北大西洋海域（40W）
区域关键词统一资源名称：SDN:C19::SVX00015
作者邮箱：Quitterie CAZENAVE <[e-mail]> Julie GATTI <[e-mail]>
地形数据来源：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框架内生成的，得到DG MARE招标支持，招标号EASME/EMFF/2020/3.1.11/European Marine Observation and Data Network (EMODnet) - Lot 5 - Chemistry”。
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.，和Vandenbulcke, L. (2014): divand-1.0: n维海洋观测的变分数据分析，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维海洋观测的变分数据分析。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/10.13120/9fc08bf8-e5f9-42a1-b2dd-edcfb898e362
最东经：-1.0099315643310547
文件名：Water_body_chlorophyll-a.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：Tue Aug 29 17:02:50 2023: ncks -O Water_body_chlorophyll-a.nc Water_body_chlorophyll-a.nc
ID：DatasetScan/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_chlorophyll-a.nc
信息URL：http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_chlorophyll-a.nc.html
机构：IFREMER，SISMER，海洋科学信息系统
机构统一资源名称：SDN:EDMO::486
关键词词汇：GCMD科学关键词
NCO：netCDF操作员版本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：水体叶绿素-a
参数关键词统一资源名称：SDN:P35::EPC00105
产品代码：Loire-Water_body_chlorophyll-a-v2023-ANA
产品ID：9fc08bf8-e5f9-42a1-b2dd-edcfb898e362
项目：EMODNET化学 - 第五阶段
搜索关键词：水体中叶绿素色素浓度
搜索关键词统一资源名称：SDN:P02::CPWC
来源：SeaDataNet/EMODnet化学数据网络提供的观测数据
来源URL：http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2023/Coastal_areas/Northeast_Atlantic_Ocean_-_Loire_River/Water_body_chlorophyll-a.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