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PRODUCT USER MANUAL
For Near Real Time and Delayed Mode Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
Issue: 1.6
Contributors : J. Gatti, S. Pouliquen, T. Szekely, D. Dobler
Approval Date: May 2020
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
© EU Copernicus Marine Service – Public Ref: CMEMS-INS-PUM-013-002-ab Page 2/ 22
CHANGE RECORD
Document version
Date change Description of Change Author Validated By
1.0 10/02/2013
Creation of the document
Julie Gatti S Pouliquen
1.1 15/01/2015 Remove daily product S Pouliquen L. Crosnier
1.2
May 1 2015 all Change format to fit CMEMS graphical rules
L. Crosnier
1.3
1.3a
Mar 15 2016
Mar 15 2016
all Change MyOcean in CMEMS
Minor typo changes
S Pouliquen
L. Petit de la Villéon
S Pouliquen
1.4 Mar 07 2017
All Update T.Szekely
1.5 Sept 10, 2019
All Update T.Szekely
1.6 Mar 13 2020
All Update for NRT product D.Dobler C. Derval
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
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TABLE OF CONTENTS
I INTRODUCTION 5
I.1 Scope of this document 5
I.2 The CMEMS project 5
I.3 Short introduction to the products 5
II SYSTEM DESCRIPTION 6
III PRODUCT DESCRIPTION 7
III.1 General Information 7
III.2 Details of datasets 8
III.3 Temporal extent of analysis and update date 8
III.4 Spatial coverage and resolution 8
III.5 ISAS Configuration and first-guesses 9
IV PRODUCT DISTRIBUTION 11
IV.1 Which Download mechanism is available for this product? 11
IV.2 How to download this product? 11
IV.3 Portal ftp structure 11
V FILES NOMENCLATURE AND FORMAT 13
V.1 Nomenclature of files when downloaded through the CMEMS FTP Service 13
V.2 File Format: Netcdf 13
V.3 Structure and semantic of NetCDF files 14
V.3.1 netcdf OA_NRTOAGL01_20151215_fld_PSAL { 14
V.3.2 netcdf OA_NRTOAGL01_20150115_fld_TEMP { 15
V.3.3 netcdf OA_NRTOAGL01_20150115_dat_PSAL { 17
V.3.4 netcdf OA_NRTOAGL01_20150115_dat_TEMP { 19
VI REFERENCES 22
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GLOSSARY AND ABBREVIATIONS
CF Climate Forecast (convention for NetCDF)
CORA COriolis Re-Analysis
CORIOLIS In situ data system for operational oceanography
DT Delayed Time
EU European Union
FTP File Transfer Protocol
GDAC Global Data Archiving Centre
GTS Meteorological data exchange network
INS In situ
ISAS In Situ Analysis System
MFC Monitoring and Forecasting Centre
NetCDF Network Common Data Form
NRT Near Real Time
OA Objective Analysis
PUM Product User Manual
RAN ReANalysis
R&D Research and Development
RT Real Time
S Sea Salinity
T Sea Temperature
TAC Thematic Assembly Centre
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
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I INTRODUCTION
I.1 Scope of this document
This Product User Manual describes the INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a and the gridded product of the INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b products from the CMEMS In Situ Thematic Centre: how they are built, which content, which data services are available to access them.
I.2 The CMEMS project
The main objective of the COPERNICUS Marine and Environment Monitoring Service is to deliver and operate a rigorous, robust and sustainable Ocean Monitoring and Forecasting system to users for marine applications: maritime safety, marine resources, marine and coastal environment and climate, seasonal and weather forecasting. The CMEMS INSTAC prepares re-analysed datasets for reanalysis activities performed by the CMEMS MFCs and external users in collaboration with the SeaDataNet infrastructure and the EMODnet program for the global ocean and the European regional seas.
I.3 Short introduction to the products
Products INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a and INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b generated by the Coriolis team (the Data Centre and the Research & Development team) in Brest, France, provide global Temperature and Salinity observations datasets and objective analysis gridded fields at different time scales. The first one is a Near Real Time product (NRT) while the second one (also called CORA Analysed fields, see
Cabanes et al., 2013 and Szekely et al., 2019) is a reanalysis of these Near Real Time datasets in
delayed-mode.
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II SYSTEM DESCRIPTION
The operational analysis system set up by the IN SITU TAC Global component is operated by
CORIOLIS data centre and R&D team. It produces quality-controlled temperature and salinity
observations datasets and gridded fields. The system is based on a statistical analysis method
(objective analysis, Bretherton et al., 1976) developed and maintained at LOPS (Laboratoire
d’Océanographie Physique et Spatial, Gaillard et al., 2009): the In Situ Analysis System (ISAS). It is
performed on the datasets extracted from the Coriolis database for data quality control and producing
gridded scalar fields. This system allows presenting a synthesis and a validation of the dataset,
providing a support for localized experience (cruises), providing a validation source for operational
models, observing seasonal cycle and inter-annual variability. It is the In Situ Objective analysis
operational nominal product for the Global Ocean. The dataset contains data from different types of
instruments: mainly Argo floats (including ITP), CTD, XBT and XCTD, moorings, drifting buoys and sea
mammals.
On changes of ISAS version:
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b (CORA-GLOBAL product is re-processed from
1990 using the same ISAS version. CORA-GLOBAL-05.2 uses the version 7.0 of ISAS.
INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a product is available from Early 2015. The used
ISAS version has been changed to the v7.0 version of ISAS during summer 2020. Gridded fields have been
reprocessed from 2015 up to current time.
Further information on the ISAS tool is available at http://dx.doi.org/10.13155/22583.
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III PRODUCT DESCRIPTION
III.1 General Information
The operational analysis system is operated by the IN SITU TAC on different time scales through the
two products.
For the INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a product (A Near-Real-Time
Objective Analysis - former NRTOAGL01). The objective analysis is run several times for each
month, the first time it is run on the 8th of the following month, and the second time, it is run 3
weeks later, on the 1st of the month after, as new data still arrive more than 3 weeks after
acquisition. Then annually, the monthly products that are more recent than the last available
monthly REP (delayed mode) product are generated once more, This allows to take into
account the quality improvement in the overall Coriolis dataset, and in particular, a better
correction of salinity drifts (see a more detailed justification in the QUID).
For the INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b product, a complete re-
analysis is performed in delayed mode on all the data extracted from the Coriolis database
since 1990 and updated each year to add the latest complete year of data
THIS IS THE PRODUCT TO USE WHEN AVAILABLE AS THE TIME SERIE IS HOMOGENEOUS IN
TERM OF VERSION OF THE ANALYSIS SYSTEM AND THE OBSERVATION USED HAVE BEEN
SCIENTIFICALLY ASSESSED
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III.2 Details of datasets
The following manual applies to the following list of products described in CMEMS Catalogue
Short Description
Product code Area Delivery Time
Included Data
Global NRT
INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
Global Monthly
Stations for which both temperature and salinity fields are available and no eXpendable (XBT, XCTD) data
Global DT INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b
Global Yearly All types of data (described thoroughly in PUM of INSITU_GLO_TS_REP_OBSERVATIONS_013_001_b product)
Table 1: List of INS TAC products for which this manual apply
Detailed information on the INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b product is available at: http://www.coriolis.eu.org/Science2/Global-Ocean/CORA
III.3 Temporal extent of analysis and update date
For the INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a product:
A Monthly analysis is run using data covering a six-week window, 21 days before and after the date of the analysis centred on the 15th of the month..These monthly analyses are delivered as mentioned previously: the 8
th of the following month, the 1
st of the Month after and annually in January or February
if the monthly analysis date is more recent than the last delayed-mode (REP) product. This time series shouldn’t contain gaps unless no data was available for this month.
For the INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b product
See http://www.coriolis.eu.org/Science2/Global-Ocean/CORA for detailed information
III.4 Spatial coverage and resolution
For both products, this is a global analysis, covering -180 to 179.5 degrees in longitude and -77.0 to 89.9 in latitude. Longitude resolution is equal to 0.5 degrees. Latitude resolution is not homogenous: it is equal to 0.5 degrees at the equator, reaches 0.1 degrees at 77 S and 0.2 degrees at 89.9 N (see Figure 1)
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
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Figure 1: latitude resolution of the gridded field
III.5 ISAS Configuration and first-guesses
The following ISAS configuration was used to generate the gridded fields:
Product Configuration file Content
NRT PSAL.cnf PSAL
ISAS13_CLIM_ann_STD_PSAL.nc % a priori climatology variance
ISAS13FDS_ann_0_COVS.nc% a priori climatology covariance
bathy_isas15.nc % bathy definition
300 300 30 % covar_ls x, y t (in km, km, days)
30 % covar_ms_t (in days)
1 2 8 % var_weigh (LS, MS, UR)
1 1 0 1 % x, y, z, t covariance dependency (1 = yes, 0 = no)
1.5 % fact. Variance
5 12 % QC Max Mx_std
0.99 % Cov_max (if > 1, no oversampling test) (v4 : 1.1)
NRT TEMP.cnf TEMP
ISAS13_CLIM_ann_STD_TEMP.nc % a priori climatology variance
ISAS13FDS_ann_0_COVS.nc% a priori climatology covariance
bathy_isas15.nc % bathy definition
300 300 30 % covar_ls x, y t (in km, km, days)
30 % covar_ms_t (in days)
1 2 8 % var_weigh (LS, MS, UR)
1 1 0 1 % x, y, z, t covariance dependency (1 = yes, 0 = no)
1.5 % fact. Variance
5 12 % QC Max Mx_std
0.99 % Cov_max (if > 1, no oversampling test)
NRT Pre-treatment
conf_isasana.xml
For a same platform, if relevant, a reduction is performed by averaging
information on :
5km/5days areas for data treated as vertical profiles
55km/9days areas for data treated as time series (namely
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TAO/PIRATA/RAMA moorings)
REP PSAL.cnf PSAL
ISAS13_CLIM_ann_STD_PSAL.nc % a priori climatology variance
ISAS13FDS_ann_0_COVS.nc% a priori climatology covariance
bathy_isas15.nc % bathy definition
300 300 30 % covar_ls x, y t (in km, km, days)
30 % covar_ms_t (in days)
1 2 8 % var_weigh (LS, MS, UR)
1 1 0 1 % x, y, z, t covariance dependency (1 = yes, 0 = no)
1.5 % fact. Variance
5 12 % QC Max Mx_std
0.9999 % Cov_max (if > 1, no oversampling test)
REP TEMP.cnf TEMP
ISAS13_CLIM_ann_STD_TEMP.nc % a priori climatology variance
ISAS13FDS_ann_0_COVS.nc% a priori climatology covariance
bathy_isas15.nc % bathy definition
300 300 30 % covar_ls x, y t (in km, km, days)
30 % covar_ms_t (in days)
1 2 8 % var_weigh (LS, MS, UR)
1 1 0 1 % x, y, z, t covariance dependency (1 = yes, 0 = no)
1.5 % fact. Variance
5 12 % QC Max Mx_std
0.9999 % Cov_max (if > 1, no oversampling test)
The climatology (first-guess) used for NRT product is ISAS13 (Gaillard et al. , 2016).
The climatology (first-guess) used for REP product is varying with the year of analysis. It begins with WOA climatology in 1990 and ends with ISAS13 climatology in 2016 and after. For the years in-between, a weighted average is performed using both climatology, the weighs depending on the time distance to them.
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IV PRODUCT DISTRIBUTION
IV.1 Which Download mechanism is available for this product?
The download mechanisms available for this product are:
Subsetter
CMEMS FTP
IV.2 How to download this product?
You first need to register. Please find the registration steps on our website:
http://marine.copernicus.eu/tutorials/how-to-register-to-copernicus-marine-service-update-
september-2015/
Once registered, the CMEMS FAQ will guide you on how to download a product through the CMEMS Web Portal Subsetter and FTP Services.
IV.3 Portal ftp structure
The directory organization on the ftp portal is described below.
Figure 2: ftp portal structure of the INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a product
data
FTP Portal
field
YYYY
2015
2020
YYYY
2015
2020
OA_NRTOAGL01_YYYYMM15_dat_PSAL.nc OA_ NRTOAGL01_YYYYMM15_dat_TEMP.nc
OA_NRTOAGL01_YYYYMM15_fld_PSAL.nc OA_ NRTOAGL01_YYYYMM15_fld_TEMP.nc
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Figure 3: ftp portal structure of the INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b product
The following directories of the ftp portal relate to various and different data:
- DATA: information on the auxiliary data used to build the analysed gridded field.
- FIELD: the the gridded field produced by the objective analysis and estimation error.
For detailed information on CORA, please visit: http://www.coriolis.eu.org/Science2/Global-Ocean/CORA
data
CORA-5.2-data-YYYY.tgz
OA_CORA5.2_YYYYMM15_dat_PSAL.nc OA_CORA5.2_YYYYMM15_dat_TEMP.nc
FTP Portal
field YYYY
1990
2019
OA_CORA5.2_YYYYMM15_fld_PSAL.nc OA_CORA5.2_YYYYMM15_fld_TEMP.nc
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V FILES NOMENCLATURE AND FORMAT
Only files of the INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a product are described hereafter since a full description of the CORA files is available at: http://www.coriolis.eu.org/Science2/Global-Ocean/CORA
V.1 Nomenclature of files when downloaded through the CMEMS FTP Service
- The OA files: OA_code_YYYYMMDD_type_param.nc
where: code is the name of the analysis performed: NRTOAGL01,
YYYYMMDD is the central date of the analysed period ,
type is the type of analysis product: dat for data or fld for gridded field,
param is the parameter : TEMP (sea temperature) or PSAL (sea salinity).
V.2 File Format: Netcdf
The products are stored using the NetCDF format.
Since mid-2020, INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a files uses netCDF-4 classic model format (especially for compression capability) and INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b files uses netCDF-3 model.
NetCDF (network Common Data Form) is an interface for array-oriented data access and a library that provides an implementation of the interface. The netCDF library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data. The netCDF software was developed at the Unidata Program Centre in Boulder, Colorado. The netCDF libraries define a machine-independent format for representing scientific data.
Please see Unidata netCDF pages for more information, and to retrieve netCDF software package.
NetCDF data is:
* Self-Describing. A netCDF file includes information about the data it contains.
* Architecture-independent. A netCDF file is represented in a form that can be accessed by computers with different ways of storing integers, characters, and floating-point numbers.
* Direct-access. A small subset of a large dataset may be accessed efficiently, without first reading through all the preceding data.
* Appendable. Data can be appended to a netCDF dataset along one dimension without copying the dataset or redefining its structure. The structure of a netCDF dataset can be changed, though this sometimes causes the dataset to be copied.
* Sharable. One writer and multiple readers may simultaneously access the same netCDF file.
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V.3 Structure and semantic of NetCDF files
For OA_code_YYYYMMDD_type_param.nc, there are four different netcdf descriptions:
OA_code_YYYYMMDD_fld_PSAL.nc
OA_code_YYYYMMDD_fld_TEMP.nc
OA_code_YYYYMMDD_dat_PSAL.nc
OA_code_YYYYMMDD_dat_TEMP.nc
V.3.1 netcdf OA_NRTOAGL01_20151215_fld_PSAL {
dimensions: longitude = 720 ; latitude = 545 ; depth = 152 ; time = 1 ; variables: float longitude(longitude) ; longitude:standard_name = "longitude" ; longitude:units = "degree_east" ; longitude:valid_min = -180.f ; longitude:valid_max = 180.f ; longitude:axis = "X" ; float latitude(latitude) ; latitude:standard_name = "latitude" ; latitude:units = "degree_north" ; latitude:valid_min = -90.f ; latitude:valid_max = 90.f ; latitude:axis = "Y" ; float depth(depth) ; depth:standard_name = "depth" ; depth:units = "m" ; depth:positive = "down" ; depth:valid_min = 0.f ; depth:valid_max = 12000.f ; depth:axis = "Z" ; float time(time) ; time:standard_name = "time" ; time:units = "days since 1950-01-01T00:00:00Z" ; time:axis = "T" ; short PSAL(time, depth, latitude, longitude) ; PSAL:_FillValue = 32767s ; PSAL:long_name = "Practical salinity" ; PSAL:standard_name = "sea_water_salinity" ; PSAL:units = "PSS-78" ; PSAL:valid_min = -26000s ; PSAL:valid_max = 30000s ; PSAL:add_offset = 30. ; PSAL:scale_factor = 0.001 ; short PSAL_ERR(time, depth, latitude, longitude) ; PSAL_ERR:_FillValue = 32767s ;
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PSAL_ERR:long_name = "Practical salinity Error" ; PSAL_ERR:standard_name = ; PSAL_ERR:units = "PSS-78" ; PSAL_ERR:valid_min = 0s ; PSAL_ERR:valid_max = 15000s ; PSAL_ERR:add_offset = 0. ; PSAL_ERR:scale_factor = 0.001 ; byte PSAL_PCTVAR(time, depth, latitude, longitude) ; PSAL_PCTVAR:_FillValue = 127b ; PSAL_PCTVAR:long_name = "Error on salinity (% variance)" ; PSAL_PCTVAR:standard_name = ; PSAL_PCTVAR:units = "%" ; PSAL_PCTVAR:valid_min = 0. ; PSAL_PCTVAR:valid_max = 100. ; // global attributes: :Conventions = "CF-1.4" ; :title = "Monthly analysis" ; :history = "20200218T163719L : Creation" ; :institution = "IFREMER" ; :project_name = "CORIOLIS" ; :source = "ISAS-V7" ; :analysis_name = "OA_NRTOAGL01_" ; :data_manager = "T.Carval" ; :software_version = "ISAS / POSTOA_main - 7.0" ; :southernmost_latitude = "-77.0105" ; :northernmost_latitude = "89.8963" ; :latitude_resolution = 0.4999937f ; :westernmost_longitude = "-180" ; :easternmost_longitude = "179.5" ; :longitude_resolution = 0.5f ; :start_date = "2015-12-15" ; :stop_date = "2015-12-15" ; :creation_date = "20200218T163719L" ; :reference_date = "1950-01-01T00:00:00Z" ; :references = "Gaillard et al., JCLIM 2016, Doi:10.1175/JCLI-D-15-0028.1 " ; :comment = "..." ; }
V.3.2 netcdf OA_NRTOAGL01_20150115_fld_TEMP {
dimensions: longitude = 720 ; latitude = 545 ; depth = 152 ; time = 1 ; variables: float longitude(longitude) ; longitude:standard_name = "longitude" ; longitude:units = "degree_east" ; longitude:valid_min = -180.f ; longitude:valid_max = 180.f ; longitude:axis = "X" ; float latitude(latitude) ; latitude:standard_name = "latitude" ; latitude:units = "degree_north" ;
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latitude:valid_min = -90.f ; latitude:valid_max = 90.f ; latitude:axis = "Y" ; float depth(depth) ; depth:standard_name = "depth" ; depth:units = "m" ; depth:positive = "down" ; depth:valid_min = 0.f ; depth:valid_max = 12000.f ; depth:axis = "Z" ; float time(time) ; time:standard_name = "time" ; time:units = "days since 1950-01-01T00:00:00Z" ; time:axis = "T" ; short TEMP(time, depth, latitude, longitude) ; TEMP:_FillValue = 32767s ; TEMP:long_name = "Temperature " ; TEMP:standard_name = "sea_water_temperature" ; TEMP:units = "degree_Celsius" ; TEMP:valid_min = -23000s ; TEMP:valid_max = 20000s ; TEMP:add_offset = 20. ; TEMP:scale_factor = 0.001 ; short TEMP_ERR(time, depth, latitude, longitude) ; TEMP_ERR:_FillValue = 32767s ; TEMP_ERR:long_name = "Temperature Error" ; TEMP_ERR:standard_name = ; TEMP_ERR:units = "degree_Celsius" ; TEMP_ERR:valid_min = 0s ; TEMP_ERR:valid_max = 20000s ; TEMP_ERR:add_offset = 0. ; TEMP_ERR:scale_factor = 0.001 ; byte TEMP_PCTVAR(time, depth, latitude, longitude) ; TEMP_PCTVAR:_FillValue = 127b ; TEMP_PCTVAR:long_name = "Error on temperature (% variance)" ; TEMP_PCTVAR:standard_name = ; TEMP_PCTVAR:units = "%" ; TEMP_PCTVAR:valid_min = 0. ; TEMP_PCTVAR:valid_max = 100. ; // global attributes: :Conventions = "CF-1.4" ; :title = "Monthly analysis" ; :history = "20200206T230449L : Creation" ; :institution = "IFREMER" ; :project_name = "CORIOLIS" ; :source = "ISAS-V7" ; :analysis_name = "OA_NRTOAGL01_" ; :data_manager = "T.Carval" ; :software_version = "ISAS / POSTOA_main - 7.0" ; :southernmost_latitude = "-77.0105" ; :northernmost_latitude = "89.8963" ; :latitude_resolution = 0.4999937f ; :westernmost_longitude = "-180" ; :easternmost_longitude = "179.5" ; :longitude_resolution = 0.5f ;
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
© EU Copernicus Marine Service – Public Ref: CMEMS-INS-PUM-013-002-ab Page 17/ 22
:start_date = "2015-01-15" ; :stop_date = "2015-01-15" ; :creation_date = "20200206T230449L" ; :reference_date = "1950-01-01T00:00:00Z" ; :references = "Gaillard et al., JCLIM 2016, Doi:10.1175/JCLI-D-15-0028.1 " ; :comment = "..." ; }
V.3.3 netcdf OA_NRTOAGL01_20150115_dat_PSAL {
dimensions: DATE_TIME = 16 ; STRING64 = 64 ; STRING32 = 32 ; STRING16 = 16 ; STRING8 = 8 ; STRING4 = 4 ; STRING2 = 2 ; N_PROF = 43993 ; N_LEVELS = 152 ; variables: char REFERENCE_DATE_TIME(DATE_TIME) ; REFERENCE_DATE_TIME:long_name = "UTC-Date-time of reference for Julian days" ; REFERENCE_DATE_TIME:conventions = "ISO 8601" ; char DATA_TYPE(STRING16) ; DATA_TYPE:long_name = "Data type" ; char PLATFORM_NUMBER(N_PROF, STRING8) ; PLATFORM_NUMBER:long_name = "Float unique identifier" ; PLATFORM_NUMBER:conventions = "WMO float identifier" ; char WMO_INST_TYPE(N_PROF, STRING4) ; WMO_INST_TYPE:long_name = "Coded instrument type" ; WMO_INST_TYPE:conventions = "WMO code table 1770 - instrument type" ; char DC_REFERENCE(N_PROF, STRING32) ; DC_REFERENCE:long_name = "Unique identifier for profile/in data centre, *10+1 for profiles, *10+2 for time_series" ; DC_REFERENCE:conventions = "Data centre convention" ; double JULD(N_PROF) ; JULD:standard_name = "time" ; JULD:long_name = "Julian day (UTC) relative to REFERENCE_DATE_TIME" ; JULD:units = "days since REFERENCE_DATE_TIME" ; JULD:conventions = "Relative julian days with decimal part (as parts of day)" ; double LATITUDE(N_PROF) ; LATITUDE:standard_name = "latitude" ; LATITUDE:long_name = "Latitude of the station, best estimate" ; LATITUDE:units = "degree_north" ; LATITUDE:valid_min = -90. ; LATITUDE:valid_max = 90. ; double LONGITUDE(N_PROF) ; LONGITUDE:standard_name = "longitude" ; LONGITUDE:long_name = "Longitude of the station, best estimate" ; LONGITUDE:units = "degree_east" ; LONGITUDE:valid_min = -180. ; LONGITUDE:valid_max = 180. ; double DEPH(N_LEVELS) ;
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
© EU Copernicus Marine Service – Public Ref: CMEMS-INS-PUM-013-002-ab Page 18/ 22
DEPH:standard_name = "depth" ; DEPH:units = "m" ; DEPH:positive = "down" ; DEPH:valid_min = 0. ; DEPH:valid_max = 10000. ; byte PSAL_PROC(N_PROF) ; PSAL_PROC:_FillValue = 127b ; PSAL_PROC:long_name = "profile processing level" ; PSAL_PROC:valid_min = 0. ; PSAL_PROC:valid_max = 5. ; PSAL_PROC:convention = "processing status: 1=raw, 2=ajusted" ; byte PSAL_QC(N_PROF, N_LEVELS) ; PSAL_QC:_FillValue = 127b ; PSAL_QC:long_name = "Quality flag on interpolated variable" ; PSAL_QC:flag_values = " 1b, 2b, 3b, 4b, 5b, 6b, 7b, 8b, 9b " ; PSAL_QC:flag_meanings = "1--4:good_to_acceptable;5:bad_quality_interpolation;6:bad-manual_flag;7--8:not_used;9:not_interpolated;" ; short PSAL(N_PROF, N_LEVELS) ; PSAL:_FillValue = 32767s ; PSAL:long_name = "Practical salinity" ; PSAL:standard_name = "sea_water_salinity" ; PSAL:units = "none" ; PSAL:valid_min = -27000s ; PSAL:valid_max = 30000s ; PSAL:add_offset = 30. ; PSAL:scale_factor = 0.001 ; short PSAL_CLMN(N_PROF, N_LEVELS) ; PSAL_CLMN:_FillValue = 32767s ; PSAL_CLMN:long_name = "Climatology mean for profile" ; PSAL_CLMN:units = "none" ; PSAL_CLMN:valid_min = -27000s ; PSAL_CLMN:valid_max = 30000s ; PSAL_CLMN:add_offset = 30. ; PSAL_CLMN:scale_factor = 0.001 ; short PSAL_CLSD(N_PROF, N_LEVELS) ; PSAL_CLSD:_FillValue = 32767s ; PSAL_CLSD:long_name = "Climatology standard deviation for profile" ; PSAL_CLSD:units = "none" ; PSAL_CLSD:valid_min = 1s ; PSAL_CLSD:valid_max = 10000s ; PSAL_CLSD:add_offset = 0. ; PSAL_CLSD:scale_factor = 0.001 ; short PSAL_ERME(N_PROF, N_LEVELS) ; PSAL_ERME:_FillValue = 32767s ; PSAL_ERME:long_name = "Measurement error" ; PSAL_ERME:units = "none" ; PSAL_ERME:valid_min = 1s ; PSAL_ERME:valid_max = 10000s ; PSAL_ERME:add_offset = 0. ; PSAL_ERME:scale_factor = 0.001 ; short PSAL_ERUR(N_PROF, N_LEVELS) ; PSAL_ERUR:_FillValue = 32767s ; PSAL_ERUR:long_name = "Error from unresolved scales" ; PSAL_ERUR:units = "none" ; PSAL_ERUR:valid_min = 1s ;
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
© EU Copernicus Marine Service – Public Ref: CMEMS-INS-PUM-013-002-ab Page 19/ 22
PSAL_ERUR:valid_max = 10000s ; PSAL_ERUR:add_offset = 0. ; PSAL_ERUR:scale_factor = 0.001 ; int PSAL_RESI(N_PROF, N_LEVELS) ; PSAL_RESI:_FillValue = 2147483647 ; PSAL_RESI:long_name = "Residual" ; PSAL_RESI:units = "none" ; PSAL_RESI:valid_min = -20000s ; PSAL_RESI:valid_max = 20000s ; PSAL_RESI:add_offset = 0. ; PSAL_RESI:scale_factor = 0.001 ; // global attributes: :Conventions = "CF-1.4" ; :title = "Global Ocean near real time in-situ observations objective analysis" ; :institution = "IFREMER" ; :project_name = "CORIOLIS" ; :source = "ISAS-V7" ; :data_manager = "T.Carval" ; :software_version = "ISAS / POSTOA_main - 7.0" ; :references = "Gaillard et al., JCLIM 2016, Doi:10.1175/JCLI-D-15-0028.1 " ; :history = "20200207T001909L : Creation" ; }
V.3.4 netcdf OA_NRTOAGL01_20150115_dat_TEMP {
dimensions: DATE_TIME = 16 ; STRING64 = 64 ; STRING32 = 32 ; STRING16 = 16 ; STRING8 = 8 ; STRING4 = 4 ; STRING2 = 2 ; N_PROF = 45955 ; N_LEVELS = 152 ; variables: char REFERENCE_DATE_TIME(DATE_TIME) ; REFERENCE_DATE_TIME:long_name = "UTC-Date-time of reference for Julian days" ; REFERENCE_DATE_TIME:conventions = "ISO 8601" ; char DATA_TYPE(STRING16) ; DATA_TYPE:long_name = "Data type" ; char PLATFORM_NUMBER(N_PROF, STRING8) ; PLATFORM_NUMBER:long_name = "Float unique identifier" ; PLATFORM_NUMBER:conventions = "WMO float identifier" ; char WMO_INST_TYPE(N_PROF, STRING4) ; WMO_INST_TYPE:long_name = "Coded instrument type" ; WMO_INST_TYPE:conventions = "WMO code table 1770 - instrument type" ; char DC_REFERENCE(N_PROF, STRING32) ; DC_REFERENCE:long_name = "Unique identifier for profile/in data centre, *10+1 for profiles, *10+2 for time_series" ; DC_REFERENCE:conventions = "Data centre convention" ; double JULD(N_PROF) ; JULD:standard_name = "time" ;
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
© EU Copernicus Marine Service – Public Ref: CMEMS-INS-PUM-013-002-ab Page 20/ 22
JULD:long_name = "Julian day (UTC) relative to REFERENCE_DATE_TIME" ; JULD:units = "days since REFERENCE_DATE_TIME" ; JULD:conventions = "Relative julian days with decimal part (as parts of day)" ; double LATITUDE(N_PROF) ; LATITUDE:standard_name = "latitude" ; LATITUDE:long_name = "Latitude of the station, best estimate" ; LATITUDE:units = "degree_north" ; LATITUDE:valid_min = -90. ; LATITUDE:valid_max = 90. ; double LONGITUDE(N_PROF) ; LONGITUDE:standard_name = "longitude" ; LONGITUDE:long_name = "Longitude of the station, best estimate" ; LONGITUDE:units = "degree_east" ; LONGITUDE:valid_min = -180. ; LONGITUDE:valid_max = 180. ; double DEPH(N_LEVELS) ; DEPH:standard_name = "depth" ; DEPH:units = "m" ; DEPH:positive = "down" ; DEPH:valid_min = 0. ; DEPH:valid_max = 10000. ; byte TEMP_PROC(N_PROF) ; TEMP_PROC:_FillValue = 127b ; TEMP_PROC:long_name = "profile processing level" ; TEMP_PROC:valid_min = 0. ; TEMP_PROC:valid_max = 5. ; TEMP_PROC:convention = "processing status: 1=raw, 2=ajusted" ; byte TEMP_QC(N_PROF, N_LEVELS) ; TEMP_QC:_FillValue = 127b ; TEMP_QC:long_name = "Quality flag on interpolated variable" ; TEMP_QC:flag_values = " 1b, 2b, 3b, 4b, 5b, 6b, 7b, 8b, 9b " ; TEMP_QC:flag_meanings = "1--4:good_to_acceptable;5:bad_quality_interpolation;6:bad-manual_flag;7--8:not_used;9:not_interpolated;" ; short TEMP(N_PROF, N_LEVELS) ; TEMP:_FillValue = 32767s ; TEMP:long_name = "Temperature (T90) (interpolated on Z_levels)" ; TEMP:standard_name = "sea_water_temperature" ; TEMP:units = "degree_Celsius" ; TEMP:valid_min = -23000s ; TEMP:valid_max = 20000s ; TEMP:add_offset = 20. ; TEMP:scale_factor = 0.001 ; short TEMP_CLMN(N_PROF, N_LEVELS) ; TEMP_CLMN:_FillValue = 32767s ; TEMP_CLMN:long_name = "Climatology mean for profile" ; TEMP_CLMN:units = "degree_Celsius" ; TEMP_CLMN:valid_min = -23000s ; TEMP_CLMN:valid_max = 20000s ; TEMP_CLMN:add_offset = 20. ; TEMP_CLMN:scale_factor = 0.001 ; short TEMP_CLSD(N_PROF, N_LEVELS) ; TEMP_CLSD:_FillValue = 32767s ; TEMP_CLSD:long_name = "Climatology standard deviation for profile" ; TEMP_CLSD:units = "degree_Celsius" ; TEMP_CLSD:valid_min = 1s ;
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
© EU Copernicus Marine Service – Public Ref: CMEMS-INS-PUM-013-002-ab Page 21/ 22
TEMP_CLSD:valid_max = 10000s ; TEMP_CLSD:add_offset = 0. ; TEMP_CLSD:scale_factor = 0.001 ; short TEMP_ERME(N_PROF, N_LEVELS) ; TEMP_ERME:_FillValue = 32767s ; TEMP_ERME:long_name = "Measurement error" ; TEMP_ERME:units = "degree_Celsius" ; TEMP_ERME:valid_min = 1s ; TEMP_ERME:valid_max = 10000s ; TEMP_ERME:add_offset = 0. ; TEMP_ERME:scale_factor = 0.001 ; short TEMP_ERUR(N_PROF, N_LEVELS) ; TEMP_ERUR:_FillValue = 32767s ; TEMP_ERUR:long_name = "Error from unresolved scales" ; TEMP_ERUR:units = "degree_Celsius" ; TEMP_ERUR:valid_min = 1s ; TEMP_ERUR:valid_max = 10000s ; TEMP_ERUR:add_offset = 0. ; TEMP_ERUR:scale_factor = 0.001 ; int TEMP_RESI(N_PROF, N_LEVELS) ; TEMP_RESI:_FillValue = 2147483647 ; TEMP_RESI:long_name = "Residual" ; TEMP_RESI:units = "degree_Celsius" ; TEMP_RESI:valid_min = -20000s ; TEMP_RESI:valid_max = 20000s ; TEMP_RESI:add_offset = 0. ; TEMP_RESI:scale_factor = 0.001 ; // global attributes: :Conventions = "CF-1.4" ; :title = "Global Ocean near real time in-situ observations objective analysis" ; :institution = "IFREMER" ; :project_name = "CORIOLIS" ; :source = "ISAS-V7" ; :data_manager = "T.Carval" ; :software_version = "ISAS / POSTOA_main - 7.0" ; :references = "Gaillard et al., JCLIM 2016, Doi:10.1175/JCLI-D-15-0028.1 " ; :history = "20200206T230409L : Creation" ; }
PUM for Objective Analysis Products
INSITU_GLO_TS_OA_REP_OBSERVATIONS_013_002_b INSITU_GLO_TS_OA_NRT_OBSERVATIONS_013_002_a
March 13, 2020
Issue : 1.6
© EU Copernicus Marine Service – Public Ref: CMEMS-INS-PUM-013-002-ab Page 22/ 22
VI REFERENCES
Szekely T, Gourrion J, Pouliquen S, Reverdin G. 2019. The CORA 5.2 dataset: global in-situ temperature and salinity measurements dataset. Data description and validation. Ocean Science Discussion. DOI:10.5194/os-2018-144
Cabanes C, Grouazel A, von Schuckmann K, Hamon M, Turpin V, Coatanoan C, Paris F,Guinehut S, Boone, C,Ferry N, de Boyer Montégut C, Carval T, Reverdin G, Pouliquen S, Le Traon, P.-Y. 2013. The CORA dataset: validation and diagnostics of in-situ ocean temperature and salinity measurements. Ocean Science. DOI:10.5194/os-9-1-2013
Gaillard F. 2012. ISAS-Tool Version 6: Method et configuration. DOI:10.13155/22583
Gaillard F, Reynaud T, Thierry V, Kolodziejczyk N, Von Schuckmann K (2016). In-situ based reanalysis of the global ocean temperature and salinity with ISAS: variability of the heat content and steric height. Journal Of Climate, 29(4), 1305-1323. Publisher's official version: DOI:10.1175/JCLI-D-15- 0028.1 , Open Access version: archimer/doc/00309/42030/