Flood extent mapping
Radar images, which see through cloud, are classified to map standing water during and after floods, and compared with optical images and field reports.
GCRI · Clima y amenazas
Earth observation and remote sensing measure hazards and their footprints from space and the air: rainfall, soil moisture, vegetation, fire, flood extent and ground deformation. In this field it fills gaps between ground stations and gives consistent records across borders.
Earth observation and remote sensing gather information about the Earth’s surface and atmosphere from airborne and spaceborne sensors. They provide consistent, repeatable measurements over areas that are hard to monitor on the ground. In climate and hazards and disaster and crisis, earth observation maps exposure, damage and environmental change across borders and sectors. It supports rapid assessment after disasters and long-term monitoring of risk drivers. The canonical description is on STEM Commons.
Radar images, which see through cloud, are classified to map standing water during and after floods, and compared with optical images and field reports.
Vegetation indices and land surface temperature are compared with their seasonal norms to detect agricultural drought stress.
Thermal anomalies and post-fire reflectance changes map fire activity and burned area, with detection limits stated.
Active fires, flood water and land cover across the world, from NASA GIBS. Each layer carries its own date.
El mapa interactivo requiere JavaScript; la lista de capas y las fuentes figuran a continuación.
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Último disponible
NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © colaboradores de OpenStreetMap (ODbL) · Natural Earth
Cargando las imágenes más recientes de la NASA.
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Earth observation, framed on the world.Productos satelitales y de modelos tal como los publica la NASA, cada uno con su propia fecha. Son indicadores, no evaluaciones de ningún lugar.
Capas y fechas
Datasets and records used by earth observation and remote sensing on this platform, with the role each plays and the label its values carry. Sources are listed in el registro de fuentes.
| Datos | Función | Etiqueta |
|---|---|---|
| Copernicus Sentinel-1 and Sentinel-2 | Radar and optical imagery | OBSERVADO |
| NASA MODIS and VIIRS | Daily global observations | OBSERVADO |
| GPM IMERG precipitation | Satellite rainfall estimates | ESTIMADO |
| ESA CCI soil moisture | Long-term soil moisture records | OBSERVADO |
La pantalla que utilizaría un equipo para seguir este método: sus mediciones, estados y decisiones. Los nombres son ejemplos y los valores son ilustrativos.
Climate and hazards · Earth observation for hazards · Run R-0133
revisit and swath
stratified sample
| Agua | 98 | 89 | 128 |
| Cropland | 87 | 75 | 261 |
| Built-up | 82 | 90 | 102 |
| Forest | 90 | 87 | 125 |
Products are assessed against ground reference data using accuracy matrices and independent samples. Cross-calibration between sensors checks consistency over time.
| Verificación | Cómo se hace |
|---|---|
| Evaluación de la exactitud | Maps are compared with independent reference data and accuracy reported by class |
| Cross-sensor consistency | Long records are checked for jumps when sensors change |
| Detection limits | Minimum detectable fire size, flood width or deformation is stated |
Clouds, revisit gaps and mixed pixels limit what can be observed. Changes in sensors and processing can create artificial trends.
Assembled from the Nexus Standards area profile Normas sobre riesgo climático: the hazards it names, the sistemas and sectors that carry the loss, the controls that dampen it and the data that observe it. Choose the components, pick an initiating hazard and step through the cascade. The Map view places the run on an example geography with open data. Every coupling weight is a stated assumption you can change. A teaching model, not a forecast, an assessment or a certification. To model a place of your own choosing, open the full Constructor de sistemas.
Amenazas
Sistemas y acoplamientos
Controles
NS-0 Constitución y principiosNS-1 La UNI y el catálogo de artefactos (gramática v0.2: segmentos de dominio, sector, región y entorno)NS-3 UNI de registros de riesgo (gramática, tabla de correspondencia heredada, autoridad de asignación)NS-3b Perfil de metadatos de conjuntos de datos y productos (STAC, DCAT, PROV-O)NS-9 UNI contextuales (despliegues, instancias, instancias de programa)NS-11 Verificación y seguimiento (evidencia, atestaciones, observación de la conformidad de confianza cero)NS-14 Conformidad y correspondencia con normas externasNRS-H65 Familia de amenazas: transgresión de los límites planetarios (NHS-1 planet.boundary)NRS-H62 Familia de amenazas: eventos compuestos y multiamenaza (NHS-1 sys.compound)NRS-H71 Familia de amenazas: catástrofes cósmicas y del tiempo profundo (NHS-1 planet.deep-time)NRS-H79 Familia de amenazas: crisis de salud mental (NHS-1 health.mental)NRS-H75 Familia de amenazas: enfermedades sensibles al clima (NHS-1 health.climate-sensitive)NRS-H7 Familia de amenazas: anomalías de la circulación a gran escala (NHS-1 atmo.climate-mode)Observación
Geografía de ejemplo
El modelo, sus supuestos, sus datos y su incertidumbre, en la forma en que un científico o un ingeniero los comprobaría. Las estructuras siguen métodos publicados. Los valores representados son ilustrativos, no hallazgos.
How far the outlook for earth observation for hazards could spread, shown as ranges rather than a single line.
Espacio y observación de la Tierra stewards earth observation and remote sensing for the Consortium and reviews how it is applied across platforms.
Process explorer · Process
9 steps·4 etapas·1 gate
Proceso
Processing levels are mission specific; Sentinel-2 runs from Level-0 raw data to Level-2A, and CEOS Analysis Ready Data sets the minimum for analysis.
Neutral outline of a published external standard or method, from its issuing body. Not a record of operation. Nexus does not perform, certify or approve any step shown. A gate or decision belongs to the party the source names. Level-1B and Level-1C add corrections; Level-2A adds atmospheric correction and scene classification.
serie Reports is the Consortium’s quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.
No envíe nunca datos personales, detalles sensibles de infraestructura ni nada que no tenga derecho a compartir. Un aporte se revisa antes de su uso; enviarlo no confiere autoría ni derechos editoriales, y el patrocinio nunca compra un hallazgo.
La información y las consultas están abiertas hoy. Una consulta recibe una referencia e indica el siguiente paso; las solicitudes, pagos, asignaciones de cómputo y registros solo se abren cuando existen su equipo, sus condiciones y la capacidad de revisión.
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