Mediterranean Sea, Water body chlorophyll-a.4Danl [time][lat][lon], 0.125deg, 1993-2017

DIVA 4D analysis of Water_body_chlorophyll-a. Every year of the time dimension corresponds to a 6-year running average for Winter (January - March), Spring (April - June), Summer (July - September) or Automn (October - December). Horizontal resolution 0.125deg X 0.125deg.
abstract=Moving 6-year analysis of Water body chlorophyll-a in the Mediterranean Sea for each season:
- winter: January-March,
- spring: April-June,
- summer: July-September,
- autumn: October-December.
Every year of the time dimension corresponds to the 6-year centered average of the season.
6-years periods span from 1990-1995 until 2016-2021.
Data Sources: observational data from SeaDataNet/EMODnet Chemistry Data Network.
Units: mg/m3.
Description of DIVA analysis: The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.9, using GEBCO 30sec topography for the spatial connectivity of water masses.
The horizontal resolution of the produced DIVAnd maps grids is dx=dy=0.125 degrees (around 13.5km and 10.9km accordingly).
The vertical resolution is 20 depth levels: [0.,5.,10.,20.,30.,50.,75.,100.,125.,150.,200.,250.,300.,400.,500.,600.,700.,800.,900.,1000.].
The horizontal correlation length is 200km.
The vertical correlation length (in meters) was set twice the vertical resolution: [10.,10.,20.,20.,40.,50.,50.,50.,50.,100.,100.,100.,200.,200.,200.,200.,200.,200.,200.,200.].
Duplicates check was performed using the following criteria for space and time: dlon=0.001deg., dlat=0.001deg., ddepth=1m, dtime=1hour, dvalue=0.1.
The error variance (epsilon2) was set equal to 1 for profiles and 10 for time series to reduce the influence of close data near the coasts.
An anamorphosis transformation was applied to the data (function DIVAnd.Anam.loglin) to avoid unrealistic negative values: threshold value=200.
A background analysis field was used for all years (1990-2021) with correlation length equal to 600km and error variance (epsilon2) equal to 20.
Quality control of the observations was applied using the interpolated field (QCMETHOD=3). Residuals (differences between the observations and the analysis (interpolated linearly to the location of the observations) were calculated. Observations with residuals outside the minimum and maximum values of the 99% quantile were discarded from the analysis.
Originators of Italian data sets-List of contributors:
- Brunetti Fabio (OGS)
- Cardin Vanessa, Bensi Manuel doi:10.6092/36728450-4296-4e6a-967d-d5b6da55f306
- Cardin Vanessa, Bensi Manuel, Ursella Laura, Siena Giuseppe doi:10.6092/f8e6d18e-f877-4aa5-a983-a03b06ccb987
- Cataletto Bruno (OGS)
- Cinzia Comici Cinzia (OGS)
- Civitarese Giuseppe (OGS)
- DeVittor Cinzia (OGS)
- Giani Michele (OGS)
- Kovacevic Vedrana (OGS)
- Mosetti Renzo (OGS)
- Solidoro C.,Beran A.,Cataletto B.,Celussi M.,Cibic T.,Comici C.,Del Negro P.,De Vittor C.,Minocci M.,Monti M.,Fabbro C.,Falconi C.,Franzo A.,Libralato S.,Lipizer M.,Negussanti J.S.,Russel H.,Valli G., doi:10.6092/e5518899-b914-43b0-8139-023718aa63f5
- Celio Massimo (ARPA FVG)
- Malaguti Antonella (ENEA)
- Fonda Umani Serena (UNITS)
- Bignami Francesco (ISAC/CNR)
- Boldrini Alfredo (ISMAR/CNR)
- Marini Mauro (ISMAR/CNR)
- Miserocchi Stefano (ISMAR/CNR)
- Zaccone Renata (IAMC/CNR)
- Lavezza, R., Dubroca, L. F. C., Ludicone, D., Kress, N., Herut, B., Civitarese, G., Cruzado, A., Lefevre, D.,Souvermezoglou, E., Yilmaz, A., Tugrul, S., and Ribera d'Alcala, M.: Compilation of quality controlled nutrient profiles from the Mediterranean Sea, doi:10.1594/PANGAEA.771907, 2011.
acknowledgment=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=Mediterranean Sea
area_keywords_urn=SDN:C19::3_1
Author_e_mail=Athanasia (Sissy) Iona <[e-mail]>
bathymetry_source=The GEBCO Digital Atlas published by the British Oceanographic Data Centre on behalf of IOC and IHO, 2003
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
data_access=https://emodnet.ec.europa.eu/geoviewer
date=2023-03-01T16:54:32
DIVA_code_doi=10.5281/zenodo.7016823
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_source=https://github.com/gher-uliege/DIVAnd.jl
DIVAnd_version=v2.7.9
doi=https://doi.org/10.13120/f9f2cc90-b840-11ed-056b-694d0c807e4c
Easternmost_Easting=36.5
file_name=By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc
geospatial_lat_max=46.0
geospatial_lat_min=30.0
geospatial_lat_resolution=0.125
geospatial_lat_units=degrees_north
geospatial_lon_max=36.5
geospatial_lon_min=-7.0
geospatial_lon_resolution=0.125
geospatial_lon_units=degrees_east
history=Fri Sep 1 10:07:51 2023: ncks -O Water_body_chlorophyll-a.4Danl.nc Water_body_chlorophyll-a.4Danl.nc
id=DatasetScan/emodnet-domains/By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc
infoUrl=http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-domains/By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc.html
institution=HCMR/HNODC
institution_urn=SDN:EDMO::269
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=46.0
parameter_keyword=Water body chlorophyll-a
parameter_keyword_urn=SDN:P35::EPC00105
product_code=HNODC-Mediterranean Sea-Water body chlorophyll-a-v2023-ANA
product_id=f9f2cc90-b840-11ed-056b-694d0c807e4c
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-domains/By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc
Southernmost_Northing=30.0
standard_name_vocabulary=CF Standard Name Table v70
time_coverage_end=2108-11-16T00:00:00Z
time_coverage_start=2082-02-15T00:00:00Z
WEB_visualisation=https://emodnet.ec.europa.eu/geoviewer
Westernmost_Easting=-7.0

DIVA 4D对水体叶绿素a的分析。时间维度中的每年数据对应于冬季（1月至3月）、春季（4月至6月）、夏季（7月至9月）或秋季（10月至12月）的6年滚动平均值。水平分辨率为0.125度X 0.125度。

摘要：对地中海水体叶绿素a进行的6年动态分析，按季节划分如下：
- 冬季：1月至3月，
- 春季：4月至6月，
- 夏季：7月至9月，
- 秋季：10月至12月。
时间维度中的每年数据对应于该季节的6年中心平均值。
6年周期从1990-1995年直至2016-2021年。
数据来源：SeaDataNet/EMODnet 化学数据网络观测数据。
单位：mg/m³。
DIVA分析描述：计算使用DIVAnd（n维数据插值变分分析）版本2.7.9进行，采用GEBCO 30秒地形数据用于水体的空间连通性。
生成的DIVAnd地图网格的水平分辨率为dx=dy=0.125度（约13.5公里和10.9公里相应地）。
垂直分辨率为20个深度级别：[0.,5.,10.,20.,30.,50.,75.,100.,125.,150.,200.,250.,300.,400.,500.,600.,700.,800.,900.,1000.]。
水平相关长度为200公里。
垂直相关长度（以米为单位）设置为垂直分辨率的两倍：[10.,10.,20.,20.,40.,50.,50.,50.,50.,100.,100.,100.,200.,200.,200.,200.,200.,200.,200.]。
使用以下空间和时间标准对重复数据进行了检查：dlon=0.001度，dlat=0.001度，ddepth=1米，dtime=1小时，dvalue=0.1。
误差方差（epsilon2）对于剖面设置为1，对于时间序列设置为10，以减少靠近海岸的接近数据的干扰。
对数据应用了畸变变换（函数DIVAnd.Anam.loglin）以避免不切实际的负值：阈值值=200。
对于所有年份（1990-2021年）使用了背景分析场，相关长度为600公里，误差方差（epsilon2）为20。
使用插值场对观测数据进行了质量控制（QCMETHOD=3）。计算了观测值与分析（线性插值到观测位置的）之间的残差。将残差超出99%分位数最小值和最大值的观测值从分析中剔除。
意大利数据集的发起者-贡献者列表：
- Brunetti Fabio (OGS)
- Cardin Vanessa, Bensi Manuel doi:10.6092/36728450-4296-4e6a-967d-d5b6da55f306
- Cardin Vanessa, Bensi Manuel, Ursella Laura, Siena Giuseppe doi:10.6092/f8e6d18e-f877-4aa5-a983-a03b06ccb987
- Cataletto Bruno (OGS)
- Cinzia Comici Cinzia (OGS)
- Civitarese Giuseppe (OGS)
- DeVittor Cinzia (OGS)
- Giani Michele (OGS)
- Kovacevic Vedrana (OGS)
- Mosetti Renzo (OGS)
- Solidoro C.,Beran A.,Cataletto B.,Celussi M.,Cibic T.,Comici C.,Del Negro P.,De Vittor C.,Minocci M.,Monti M.,Fabbro C.,Falconi C.,Franzo A.,Libralato S.,Lipizer M.,Negussanti J.S.,Russel H.,Valli G., doi:10.6092/e5518899-b914-43b0-8139-023718aa63f5
- Celio Massimo (ARPA FVG)
- Malaguti Antonella (ENEA)
- Fonda Umani Serena (UNITS)
- Bignami Francesco (ISAC/CNR)
- Boldrini Alfredo (ISMAR/CNR)
- Marini Mauro (ISMAR/CNR)
- Miserocchi Stefano (ISMAR/CNR)
- Zaccone Renata (IAMC/CNR)
- Lavezza, R., Dubroca, L. F. C., Ludicone, D., Kress, N., Herut, B., Civitarese, G., Cruzado, A., Lefevre, D.,Souvermezoglou, E., Yilmaz, A., Tugrul, S., and Ribera d'Alcala, M.: Compilation of quality controlled nutrient profiles from the Mediterranean Sea, doi:10.1594/PANGAEA.771907, 2011。
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：地中海
区域关键词_urn：SDN:C19::3_1
作者电子邮件：Athanasia (Sissy) Iona <[e-mail]>
水深来源：英国海洋数据中心代表IOC和IHO出版的GEBCO数字地图集，2003。
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，在DG MARE招标邀请EASME/EMFF/2020/3.1.11/European Marine Observation and Data Network (EMODnet) - Lot 5 - Chemistry的支持下。”
约定：CF-1.6, COARDS, ACDD-1.3
数据访问：https://emodnet.ec.europa.eu/geoviewer
日期：2023-03-01T16:54:32
DIVA代码_doi：10.5281/zenodo.7016823
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源：https://github.com/gher-uliege/DIVAnd.jl
DIVAnd版本：v2.7.9
doi：https://doi.org/10.13120/f9f2cc90-b840-11ed-056b-694d0c807e4c
最东经：36.5
文件名：By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc
地理空间纬度最大值：46.0
地理空间纬度最小值：30.0
地理空间纬度分辨率：0.125
地理空间纬度单位：北纬度
地理空间经度最大值：36.5
地理空间经度最小值：-7.0
地理空间经度分辨率：0.125
地理空间经度单位：东经度
历史记录：Fri Sep 1 10:07:51 2023: ncks -O Water_body_chlorophyll-a.4Danl.nc Water_body_chlorophyll-a.4Danl.nc
ID：DatasetScan/emodnet-domains/By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc
信息URL：http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-domains/By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc.html
机构：HCMR/HNODC
机构_urn：SDN:EDMO::269
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：46.0
参数关键词：水体叶绿素a
参数关键词_urn：SDN:P35::EPC00105
产品代码：HNODC-Mediterranean Sea-Water body chlorophyll-a-v2023-ANA
产品ID：f9f2cc90-b840-11ed-056b-694d0c807e4c
项目：EMODnet Chemistry第5阶段
搜索关键词：水体中叶绿素色素浓度
搜索关键词_urn：SDN:P02::CPWC
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-domains/By_sea_regions/Mediterranean_Sea/Water_body_chlorophyll-a.4Danl.nc
最南纬：30.0
标准名称词汇：CF标准名称表v70
时间范围结束：2108-11-16T00:00:00Z
时间范围开始：2082-02-15T00:00:00Z
WEB可视化：https://emodnet.ec.europa.eu/geoviewer
最西经：-7.0