Environmental flow assessment
Flow records and hydraulic models are linked to the habitat needs of fish, vegetation and wetlands to define the flow regime that sustains them.
GCRI · Biodiversity Nexus
Hydrology connects biodiversity to water: flow regimes shape freshwater habitats, wetlands store and release water, and catchment condition affects the quantity and quality of water reaching people. It quantifies the water services ecosystems provide and the flows ecosystems themselves need.
Hydrology studies the movement, distribution and quality of water across the land surface, subsurface and atmosphere. It underpins the assessment of floods, droughts and water supply, which affect food, energy, health and infrastructure together. In biodiversity and nature, climate and hazards and oceans and coasts, hydrological estimates set design standards for dams, levees and drainage and inform water allocation between competing users. They link climate hazards to downstream effects on power generation, crops and public health. The canonical description is on STEM Commons.
Flow records and hydraulic models are linked to the habitat needs of fish, vegetation and wetlands to define the flow regime that sustains them.
Rainfall-runoff and routing models are run with and without floodplain storage or forest cover to estimate how ecosystems change flood peaks downstream.
Sediment and nutrient models trace how land cover and erosion upstream affect water quality at intakes, reservoirs and coastal habitats.
Flood water, rain and root-zone soil moisture over the Amazon Basin, from NASA GIBS. Each layer carries its own date.
El mapa interactivo requiere JavaScript; la lista de capas y las fuentes figuran a continuación.
Capas 3
El agua ahora, para esta página
Teclado, con el mapa seleccionado
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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.
Arrastre para desplazar. Ctrl o ⌘ y desplazamiento, pellizco o los botones para ampliar; pase el puntero para ver los valores; restablecer devuelve a la región.
Water now, framed on the Amazon Basin.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 hydrology and water science 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 |
|---|---|---|
| Stream gauge records | Flow regime and calibration | OBSERVADO |
| JRC Global Surface Water | Wetland and floodplain inundation | OBSERVADO |
| HydroSHEDS river networks | Catchment delineation and connectivity | MODELADO |
| Water quality monitoring | Nutrient and sediment loads | 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.
Biodiversity · Hydrology for ecosystems · Run R-6654
held-out period
| T+2 | 0.21 | 0.14 | 0.22 | Skilful |
| T+4 | 0.21 | 0.19 | 0.38 | Skilful |
| T+6 | 0.36 | 0.25 | 0.19 | Skilful |
| T+8 | 0.20 | 0.20 | 0.18 | Skilful |
Models are calibrated on one period of observed flows and tested on an independent period or neighbouring catchment. Skill scores and comparison with surveyed flood extents are used to judge performance.
| Verificación | Cómo se hace |
|---|---|
| Split-sample calibration | Models are fitted on one period and tested on another, with test-period skill reported |
| Ecological response validation | Flow-ecology relationships are checked against field surveys of the species or habitats they claim to support |
| Paired scenario runs | With-and-without ecosystem runs use the same forcing so that differences can be attributed |
Assumptions of stationarity weaken as climate and land use change. Ungauged basins, karst aquifers and rapid urbanisation are poorly represented by parameters fitted elsewhere.
Rain becomes runoff by the curve number method, drains each sub-catchment through a linear reservoir and travels down the main stem by Muskingum routing; play it to watch the flood wave move and flatten. Teaching model with stated illustrative values, not a prediction. The map on this page shows The Amazon Basin; the model itself is not tied to a place.
Controles
Lecturas
| Hour | Outlet (m³/s) | Unrouted (m³/s) | Upper reach (m³/s) |
|---|---|---|---|
| 2.4 | 0.0 | 678.9 | 0.0 |
| 12.0 | 308.3 | 1,151.4 | 181.8 |
| 21.6 | 452.4 | 35.1 | 73.7 |
| 31.2 | 363.3 | 1.1 | 11.1 |
| 40.8 | 198.8 | 0.0 | 1.5 |
| 50.4 | 79.3 | 0.0 | 0.2 |
| 60.0 | 25.4 | 0.0 | 0.0 |
| 69.6 | 6.9 | 0.0 | 0.0 |
| 79.2 | 1.7 | 0.0 | 0.0 |
| 88.8 | 0.4 | 0.0 | 0.0 |
| 98.4 | 0.1 | 0.0 | 0.0 |
| 108.0 | 0.0 | 0.0 | 0.0 |
| 117.6 | 0.0 | 0.0 | 0.0 |
| 127.2 | 0.0 | 0.0 | 0.0 |
| 136.8 | 0.0 | 0.0 | 0.0 |
The model runs on the teaching values set by the controls. To calibrate it for a place, read it against these admitted layers and series, which this page’s map can draw:
En los seis pilares, bajo la dirección de Nexus Consortium
Assembled from the Nexus Standards area profile Normas sobre riesgos de biodiversidad y naturaleza: 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-5 Norma de figuras, mapas y visualizaciones (con el kit UI/UX)NS-9 UNI contextuales (despliegues, instancias, instancias de programa)NS-11 Verificación y seguimiento (evidencia, atestaciones, observación de la conformidad de confianza cero)NRS-N5 Riesgo y resiliencia de la biodiversidad y la naturalezaNRS-H65 Familia de amenazas: transgresión de los límites planetarios (NHS-1 planet.boundary)NRS-H27 Familia de amenazas: biodiversidad y presión sobre las especies (NHS-1 eco.species)NRS-H26 Familia de amenazas: degradación de tierras y humedales (NHS-1 eco.land)NRS-H28 Familia de amenazas: cambios del estado climático (NHS-1 eco.climate-state)NRS-H64 Familia de amenazas: cambios de régimen de los ecosistemas (NHS-1 eco.regime-shift)Observación
Geografía de ejemplo
Water Nexus stewards hydrology and water science for the Consortium and reviews how it is applied across platforms.
The sectors hydrology for ecosystems touches and how strongly they depend on each other: what a study has to observe and model together.
Firma
Water and Biodiversity
Water gives biodiversity environmental flows (0.6): the strongest relations between the sectors this subject joins.
W · E · I · F · H · B
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 a satellite or sensor record becomes evidence on hydrology for ecosystems, and where each step adds uncertainty.
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.
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