/

/

/

La sécheresse vue assez tôt pour agir.

Là où les gens dépendent de cultures pluviales et de pâturages, la sécheresse devient famine en quelques mois. Pluie, humidité du sol et niveaux des points d’eau mesurés au sol, combinés aux indices satellitaires, révèlent une sécheresse assez tôt pour que l’action anticipée, l’argent et la nourriture arrivent avant la crise.

Industrie

Humanitaire

Mesures

4

Sources citées

4

1. Humanitaire · Suivi de la sécheresse et de la sécurité alimentaire

   From drought to hunger

   Where people live from rain-fed crops and pasture, a failed rainy season becomes hunger within months. Food security analysts classify crises from rainfall, crops, pasture, markets and nutrition, but ground stations are scarce exactly where they matter. Early ground evidence lets cash and food arrive before the crisis peaks.

2. Ce qui est mesuré

   Rain, soil and water points

   Rain gauges across farming and pastoral zones record every shower. Soil moisture probes at representative fields and rangeland show whether rain reached the roots, and level sensors in boreholes, wells and pans show water points falling along the herding routes that pastoralists depend on.

   Instruments

   Rain gauges · Soil moisture probes · Water point levels

3. Le nœud de base

   Anomalies, computed locally

   The node checks every value against climatology and neighbouring stations, computes rainfall and soil moisture anomalies for its zone, flags dry spells and water points falling faster than usual, and sends a compact daily report that costs little to transmit.

4. Radio et liaisons

   Daily, at low cost

   Where coverage exists, daily reports travel over cellular for very little. Stations in remote pastoral zones report by satellite. Reports join the meteorological and agriculture services’ systems and sit next to satellite indices in the analysts’ tools, so ground and space evidence are read together.

   Liaisons

   Réseau mobile public · Satellite

5. Comment ça marche

   From a dry spell to early cash

   Three weeks into the rainy season, gauges across a pastoral zone report almost nothing, soil moisture stays at its dry-season level and two water points fall fast. The anomaly crosses the trigger in the agency’s early action plan, and cash transfers and water trucking start a month before the usual response.

6. De la commande à l’exploitation · Commande

   Scope with the analysts

   The scope reads the livelihood zones, the analysis calendar, existing stations and the satellite products analysts use, and the early action plans that need triggers. Nexus Observatory Inc. returns the station plan, indicator design, training and a price per station and per year.

   Planifier un déploiement

7. De la commande à l’exploitation · Relevé

   Survey zones, not points

   Crews visit each zone with local extension and water staff: representative fields and rangeland, water points on herding routes, exposure for rain gauges, community custodians for each station, coverage and security. Findings are recorded with photographs and coordinates. Every finding is kept with the site record for the crews who follow.

8. De la commande à l’exploitation · Autorisations

   Land and communities

   Land owners and community leaders agree to each station and name a custodian. Water point owners approve level sensors. The national meteorological and agriculture services agree how the data join their systems. Every agreement is kept with the station record.

9. De la commande à l’exploitation · Fabrication

   Build and calibrate

   Rain gauges and soil probes are calibrated, stations are assembled with hubs, nodes, power and backhaul, enrolled with their identities and run together before shipping. Each kit is labelled for its zone and site. Test results travel with the kit to the site.

   Ouvrir le configurateur de stations

10. De la commande à l’exploitation · Installation

    Install with custodians

    Crews and custodians set rain gauges at standard heights, install soil probes at representative depths, fit level sensors in water points, raise poles and solar panels, and photograph each part. Custodians learn to clean and check the station. The site record is updated before the crew leaves.

11. De la commande à l’exploitation · Mise en service

    Commission against the record

    Chaque nœud prouve son identité. Rain is checked with a manual gauge, soil moisture with samples, water levels with manual dips, and reports are compared with the satellite products analysts use. The station joins the analysis when its first weeks pass the checks.

12. De la commande à l’exploitation · Exploitation

    Feed early action

    Analysts see rainfall, soil moisture and water points for every zone, next to satellite indices. When a season fails, anomalies cross the triggers agreed in early action plans, and cash, fodder and water trucking start before the crisis peaks. Reports for owners and funders come from the same record.

13. De la commande à l’exploitation · Maintenance

    Keep the network honest

    Custodians clean gauges and report problems, crews visit each season to check sensors, software updates arrive remotely, and stations are compared with neighbours and satellite estimates to catch drift. Every change is kept with the station record. Spares and procedures travel with the crews.

    Réserver des services sur le terrain

14. Produits de données

    For analysts and responders

    Food security analysts receive rainfall and soil moisture anomalies; pastoral and water teams receive water point levels; governments and agencies receive early action trigger reports; meteorological and remote sensing services receive ground truth for satellite products, each tied to zone, station and date.

    Voir les produits de données

15. Preuves

    Indicators analysts already use

    Indicators follow the international drought handbook and feed the food security phase classification, soil moisture and precipitation are reported as essential climate variables, and rain is gauged to the instrument guide. Every reading, anomaly and trigger report is kept with its station and zone.

    Référentiels

    IPC Technical Manual Version 3.1 · WMO-No. 1173 · GCOS-244 · WMO-No. 8

16. Ce que vous obtenez

    Observatoires de terrain agricoles

    Profils d’humidité du sol, microclimat et évapotranspiration, avec seuils d’irrigation par champ. Fourni sous forme de service géré et licence de données, pour growers, agribusiness, irrigation districts, crop insurers. Scale: Farm to region. Service levels are written as numbers you can measure on your own dashboard.

    Parler aux ventes

17. Étape suivante

    Planifier avec nous : suivi de la sécheresse et de la sécurité alimentaire

    Tell us the site, the measurements and the rules it answers to. We reply with a survey proposal, a design and a scope for drought and food security monitoring. An engineer replies with a survey proposal and a scope, and the plan grows from one site to the network you need, at your pace.

    Planifier un déploiementOuvrir le configurateur de stationsOuvrir le Studio

01Le lieu et ses dangers

Où il fonctionne, et ce qui peut mal tourner.

Operating contextFood security analysts classify crises with an international phase classification that weighs rainfall, crop and pasture conditions alongside nutrition and markets. Drought is assessed with the indicators and indices of the international handbook, and soil moisture and precipitation are essential climate variables. Ground stations are scarce exactly where these assessments matter most.

Dangers

• Rainy seasons that start late or fail
• Pasture and crops failing before anyone measures it
• Water points drying up along herding routes
• Satellite estimates with no ground stations to check them
• Warnings that arrive after harvests have failed

02Ce qu’il faut mesurer

Quoi, où, à quelle fréquence, et selon quelles règles.

Chaque mesure indique où elle est prise, à quelle fréquence, et la norme ou la réglementation publique qui la fonde. Les numéros de la colonne des sources ouvrent la source citée plus bas.

03La pile d’observation

D’un module de base à un réseau.

Les mêmes briques à chaque échelle : des instruments et un nœud de base, un site avec sa radio, une flotte exploitée comme un tout, et un réseau fédéré sur le protocole ouvert.

1. 01

   Unité de base

   A station: a rain gauge and soil moisture probes, or a water point level sensor, on a sensor hub with a small node.

   Build a station →
2. 02

   Site

   A zone: stations across a livelihood zone, reporting to the national system with solar power.

   Plan a site →
3. 03

   Parc

   Every zone of a country or region run as one network, feeding the national and regional analysis.

   Managed offers →
4. 04

   Réseau

   Analysts, governments and agencies share ground data and indicators through open standards.

   The open protocol →

• 01Station météo compacte
• 02Sonde de sol
• 03Limnimètre
• 04Passerelle de capteurs et d’instruments
• 05Micronœud (Nano)
• 06Modem/routeur cellulaire
• 07Terminal plat LEO
• 08Champ solaire
• 09Poteau

Radio et liaisons

Réseau mobile public

Where coverage exists, daily reports travel over cellular at very low cost.

Radio et liaisons

Satellite

Stations in remote pastoral zones report by satellite.

Edge computeThe node checks values against climatology and neighbours, computes rainfall and soil moisture anomalies for its zone, flags dry spells and falling water points, and sends compact daily reports.

PowerSolar panels and batteries power every station; reporting once a day keeps power needs small.

04Comment ça marche

De l’instrument au produit.

Le parcours d’une observation, niveau par niveau, avec l’interface de chaque liaison et une nomenclature en dessous ; puis comment ce nœud devient un site, une flotte et des réseaux fédérés.

05De la commande à l’exploitation

Chaque étape, du premier appel à un site en service.

La même équipe et le même dossier portent le travail, du cadrage à la maintenance.

1. 01 Order

   Scope with the analysts

   The scope reads the livelihood zones, the analysis calendar, existing stations and the satellite products analysts use, and the early action plans that need triggers. Nexus Observatory Inc. returns the station plan, indicator design, training and a price per station and per year. 42

2. 02 Survey

   Survey zones, not points

   Crews visit each zone with local extension and water staff: representative fields and rangeland, water points on herding routes, exposure for rain gauges, community custodians for each station, coverage and security. Findings are recorded with photographs and coordinates. Every finding is kept with the site record for the crews who follow. 1

3. 03 Permits

   Land and communities

   Land owners and community leaders agree to each station and name a custodian. Water point owners approve level sensors. The national meteorological and agriculture services agree how the data join their systems. Every agreement is kept with the station record.

4. 04 Build

   Build and calibrate

   Rain gauges and soil probes are calibrated, stations are assembled with hubs, nodes, power and backhaul, enrolled with their identities and run together before shipping. Each kit is labelled for its zone and site. Test results travel with the kit to the site.

5. 05 Install

   Install with custodians

   Crews and custodians set rain gauges at standard heights, install soil probes at representative depths, fit level sensors in water points, raise poles and solar panels, and photograph each part. Custodians learn to clean and check the station. The site record is updated before the crew leaves. 1

6. 06 Commission

   Commission against the record

   Chaque nœud prouve son identité. Rain is checked with a manual gauge, soil moisture with samples, water levels with manual dips, and reports are compared with the satellite products analysts use. The station joins the analysis when its first weeks pass the checks. 3

7. 07 Operate

   Feed early action

   Analysts see rainfall, soil moisture and water points for every zone, next to satellite indices. When a season fails, anomalies cross the triggers agreed in early action plans, and cash, fodder and water trucking start before the crisis peaks. Reports for owners and funders come from the same record. 4

8. 08 Maintain

   Keep the network honest

   Custodians clean gauges and report problems, crews visit each season to check sensors, software updates arrive remotely, and stations are compared with neighbours and satellite estimates to catch drift. Every change is kept with the station record. Spares and procedures travel with the crews.

06Produits de données et intégration

Ce qu’il fournit, à qui, et dans quels systèmes.

Produits de données

• Rainfall and soil moisture anomaliesFood security analysts
• Water point levelsPastoral and water teams
• Early action trigger reportsGovernments and agencies
• Ground truth for satellite productsMeteorological and remote sensing services

Intégration

• National systemsData join the meteorological and agriculture services’ own systems.
• Food security analysisIndicators feed the analysis teams’ tools for each livelihood zone.
• Early action plansTrigger reports go to the agencies that hold the plans.

Exchanged through OGC SensorThings API, WMO WIS 2.0, HXL.

07Questions des acheteurs

Avant de cadrer votre projet.

Why ground stations if we have satellites?

Ground data check and correct satellite estimates where they are weakest.

Who looks after the stations?

Local custodians, with seasonal crew visits.

Can it trigger anticipatory action?

It supplies the indicators; the triggers are set in the agencies’ plans.

Does it work offline?

Stations store data and send when a link returns.

08Ressources

Les sources de cette page.

Normes, réglementations et lignes directrices publiques, citées là où elles s’appliquent. Chacune ne s’applique que dans sa juridiction ou son champ.

1. 1WMO-No. 8: Guide to Instruments and Methods of ObservationWorld Meteorological Organization
2. 2WMO-No. 1173: Handbook of Drought Indicators and IndicesWorld Meteorological Organization and Global Water Partnership · 2016
3. 3GCOS-244: The 2022 GCOS Implementation PlanGlobal Climate Observing System · 2022
4. 4IPC Technical Manual Version 3.1Integrated Food Security Phase Classification Global Partnership · 2021

09Voir aussi

Cas d’usage et solutions.

10Humanitaire : domaines spécialisés

Les autres domaines de cette industrie.

Présentez-nous le site.

Planifiez un déploiement, configurez une station, modélisez-la dans le Studio ou parlez à l’équipe commerciale. Le formulaire indique qui reçoit vos coordonnées.