cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25326/582
title: PM2.5 Mineral Analysis, Zoétélé, Cameroon

description: Weekly integrated aerosol samples are collected using two automatic aerosol samplers specifically designed and developed for the INDAAF program (http://indaaf.obs-mip.fr). Each sampler is equipped with two independent air inlets connected with KNF pumps (N89 KNE-K 220V) operating at a flow rate of 9 L/min, Cole palmer ball flow meters with a micrometric valve (flow range adjustable from 0 to 10 L/min and NILU online filter holders. Each air inlet is surmounted with an aerosol cutting head corresponding to aerodynamic particles diameter. Two mini Partisol low air inlets PM2.5 and PM10 (Rupprecht and Patashnick) operates at a flow rate of 5 L/min and the air volume sample is measured with a GALLUS type G4 gas meter (accuracy ±0.01 m-3) (Ouafo-Luembe et al., 2017; Djoussou et al, 2018). Aerosol samples were collected on 47mm diameter filters on a weekly basis. PTFE or teflon filters were used for to determine mineral compounds. PTFE filters are weighed before and after sampling using a SARTORIUS MCS21 microbalance (1 µg resolution for a maximum range of 21 g - Measuring accuracy of ± 5 µg). For each filter batch preparation, field blanks are included with the samplers sent into the field. Before and after collection, samples and blanks filters are conditioned in petri slides boxes and stored at 4°C. From 2005, we performed PM2.5 or PM10 weekly filter samples analysis at the Laboratoire d’Aérologie (Laero) to determine mineral composition (soluble major ions) using Ion Chromatography (IC). Before this date, weekly bulk aerosol sampling on teflon filters was performed (1998-2005).
DOI: 10.25326/618
title: Rainfall composition, Agoufou, Mali

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW 
(<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.25326/648
title: Rainfall composition, Bambey, Senegal

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW 
(<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.15468/dl.7xwkjw
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "DistanceFromCentroidInMeters is greater than or equal to 2000",
 "Geometry POLYGON ((105.610544 14.999999, 179.999961 14.999999, 179.999961 65.08290100000001, 105.610544 65.08290100000001, 105.610544 14.999999))",
 "TaxonKey is Lamprologus ocellatus"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002067-260226173443078/datasets/export for details.
DOI: 10.25326/602
title: Rainfall composition, Banizoumbou, Niger

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW 
(<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.25326/643
title: Rainfall composition, Dahra, Senegal

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW 
(<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.25326/590
title: Rainfall composition, Djougou, Benin

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW 
(<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.15468/dl.qh976n
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "and" : [
 "GadmGid is CHN.29_1",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Elaphe hodgsoni"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002066-260226173443078/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25326/619
title: Rainfall composition, Katigoubou, Mali

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW 
(<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.3886/e246410v1
title: The Nigeria navy form 2026/2027 is out call 09017730052 to apply now before the closing date

description: The Nigeria navy form 2026/2027 is out call 09017730052 to apply now before the closing date
DOI: 10.3886/e246408v1
title: Delta State School of Nursing 2026/2027 Admission Form Is On Sale.Call 09017730052 To Apply and further admission assistance. Call Admin +2349017730052

description: Delta State School of Nursing 2026/2027 Admission Form Is On Sale.Call 09017730052 To Apply and further admission assistance. Call Admin +2349017730052
DOI: 10.3886/e246409v1
title: The Nigeria navy form 2026/2027 is out call 09017730052 to apply now before the closing date

description: The Nigeria navy form 2026/2027 is out call 09017730052 to apply now before the closing date
DOI: 10.25326/276
title: Rainfall composition, Lamto, Côte d’Ivoire

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW (<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.25326/666
title: Rainfall composition, Zoétélé, Cameroon

description: Precipitation chemical composition including inorganic and organic soluble ions follow the methodologies and guidelines recommended by GAW (<a href="https://library.wmo.int/records/item/41241-manual-for-the-gaw-prec-data-quality-objectives-and-standard-operating-procedures">GAW-WMO Report n°160, 2004</a>).
Rainwater samples are collected using a wet only precipitation collector designed for the INDAAF network. The first rain droplets order the rain detector to open the lid of the collector. Rainwater samples are collected in polyethylene single-use bags. In order to avoid any contamination, the rain collector remains closed before and after the rain event. Rain samples are immediately collected by a local observer after each rain event. Samples are stored in Greiner tubes of 50 ml in a freezer -18°C. After collection, samples are sent for analysis to the Laboratoire d’Aérologie (LAERO, analytical laboratory code: FR05L) in Toulouse in the strict respect of the cold chain, where they are stored in a freezer (-18°C) until analysis. Rainfall samples are analyzed for pH, conductivity, major inorganic and organic ion concentrations (in μeq/L). Analytical precision is estimated to be 5% or better for all the ions according the LAERO analytical laboratory results to the Quality Assurance/Science Activity Centre – Americas (QA/SAC-Americas), one of five QA/SACs operating to ensure data quality and support science activities in the World Meteorological Organization Global Atmosphere Watch (WMO GAW) ( https://qasac-americas.org).
DOI: 10.25326/610
title: Trace gases, Agoufou, Mali

description: Monthly gases concentrations (in ppb) of sulfur dioxide, nitric acid, ammonia, nitrogen dioxide and ozone are measured using INDAAF passive samplers technique. Passive sampling technique uses the property of molecular diffusion of gases into the sampling device where they are collected on an impregnated filter or adsorbent material. The advantages of passive sampling technique is that it is  generally easy to carry out and low cost compared to active sampling technique to achieve mean or integrated-time concentrations. The sampling technique is conform to WMO-GAW guidelines (<a href="https://library.wmo.int/records/item/41112-report-on-passive-samplers-for-atmospheric-chemistry-measurements-and-their-role-in-gaw">GAW-WMO Report n°122, 1998</a>).
Samplers are exposed at about 1.5–3m above the ground using duplicates for each gas. The INDAAF passive samplers were developed and prepared at the Laboratoire d’Aérologie (LAERO) and then were sent each two months on measurement sites. Samplers were sent back to Laero for chemical analysis using ionic chromatography (IC). The LAERO analytical lab participates bi-annually to the WMO-GAW quality assurance program for soluble trace compounds measured by Ion Chromatography (IC). The results of these inter-comparisons are available under the reference 700106 at the following address: http://qasac-americas.org/. According to these WMO inter-comparison tests, analytical precision is estimated to be 5% or better for all ions.
DOI: 10.25326/647
title: Trace gases, Amersfoort, South Africa

description: Monthly gases concentrations (in ppb) of SO2, HNO3, NH3, NO2 and O3 are measured using passive sampling techniques. Passive sampling techniques use the property of molecular diffusion of gases into the sampling device where they are collected on an impregnated filter or adsorbent material. The advantages of passive sampling techniques are that they are generally easy to carry out and low cost compared to active sampling techniques to achieve mean or integrated-time concentrations. The WMO-GAW report 122 reports on passive samplers for atmospheric chemistry measurements and their role in GAW: https://library.wmo.int/index.php?lvl=notice_display&id=11054.
Samplers are exposed at about 1.5–3m above the ground using duplicates for each gas. The INDAAF passive samplers were developed and prepared at the Laboratoire d’Aérologie (Laero) and then were sent each two months on each measurement site. Samplers were sent back to Laero for chemical analysis using ionic chromatography (IC). The Laero analytical service participates bi-annually to the WMO-GAW quality assurance program for soluble trace compounds measured by Ion Chromatography (IC). Results are available under the reference 700106 at the following address: http://qasac-americas.org/. According to these WMO inter-comparison tests, analytical precision is estimated to be 5% or better for all ions.
DOI: 10.25326/609
title: Trace gases, Bambey, Senegal

description: Monthly gases concentrations (in ppb) of sulfur dioxide, nitric acid, ammonia, nitrogen dioxide and ozone are measured using INDAAF passive samplers technique. Passive sampling technique uses the property of molecular diffusion of gases into the sampling device where they are collected on an impregnated filter or adsorbent material. The advantages of passive sampling technique is that it is  generally easy to carry out and low cost compared to active sampling technique to achieve mean or integrated-time concentrations. The sampling technique is conform to WMO-GAW guidelines (<a href="https://library.wmo.int/records/item/41112-report-on-passive-samplers-for-atmospheric-chemistry-measurements-and-their-role-in-gaw">GAW-WMO Report n°122, 1998</a>).
Samplers are exposed at about 1.5–3m above the ground using duplicates for each gas. The INDAAF passive samplers were developed and prepared at the Laboratoire d’Aérologie (LAERO) and then were sent each two months on measurement sites. Samplers were sent back to Laero for chemical analysis using ionic chromatography (IC). The LAERO analytical lab participates bi-annually to the WMO-GAW quality assurance program for soluble trace compounds measured by Ion Chromatography (IC). The results of these inter-comparisons are available under the reference 700106 at the following address: http://qasac-americas.org/. According to these WMO inter-comparison tests, analytical precision is estimated to be 5% or better for all ions.
DOI: 10.25326/608
title: Trace gases, Banizoumbou, Niger

description: Monthly gases concentrations (in ppb) of sulfur dioxide, nitric acid, ammonia, nitrogen dioxide and ozone are measured using INDAAF passive samplers technique. Passive sampling technique uses the property of molecular diffusion of gases into the sampling device where they are collected on an impregnated filter or adsorbent material. The advantages of passive sampling technique is that it is  generally easy to carry out and low cost compared to active sampling technique to achieve mean or integrated-time concentrations. The sampling technique is conform to WMO-GAW guidelines (<a href="https://library.wmo.int/records/item/41112-report-on-passive-samplers-for-atmospheric-chemistry-measurements-and-their-role-in-gaw">GAW-WMO Report n°122, 1998</a>).
Samplers are exposed at about 1.5–3m above the ground using duplicates for each gas. The INDAAF passive samplers were developed and prepared at the Laboratoire d’Aérologie (LAERO) and then were sent each two months on measurement sites. Samplers were sent back to Laero for chemical analysis using ionic chromatography (IC). The LAERO analytical lab participates bi-annually to the WMO-GAW quality assurance program for soluble trace compounds measured by Ion Chromatography (IC). The results of these inter-comparisons are available under the reference 700106 at the following address: http://qasac-americas.org/. According to these WMO inter-comparison tests, analytical precision is estimated to be 5% or better for all ions.