Stratus-3
Available · published ratesBest default for new cloudless Sentinel-2 L2A workflows. Same 10-band output as Stratus-2, but trained further and optimized for more efficient production.
Model guide & specifications
Choose the right cloudless Sentinel-2 model
Compare ClearSKY's cloudless Sentinel-2 style models by output, fit, inputs, ordering limits, commercial availability, and delivery timing. Start with Stratus-3 for most new production workflows, choose Nimbus when its spectral or NDVI outputs fit, and contact us for on-request or quote-only models.
Quick model guide
A fast overview before opening the detailed model specifications.
Nimbus
Available · published ratesAvailable for full-spectral and NDVI-specific workflows, with Sentinel-1 and Sentinel-2 included and optional Landsat 8/9.
Cumulus
Available on request · quote onlyAvailable through a configuration-specific quote. Sentinel-1/2 are included; Landsat, CBERS, and Amazonia groups can be requested independently.
Stratus-2-Fast
Available · quote onlyUse when time from order to data matters most. Landsat is optional, which can reduce turnaround. Pricing is reviewed by quote.
Sentinel-2 Data Models
Compare model status, output, fit, ordering modes, inputs, and typical delivery timing.
Output
- Type
- Multispectral
- Format
- L2A
- Resolution
- 10 m
Bands
B2 • Blue • 490 nmB3 • Green • 560 nmB4 • Red • 665 nmB5 • Red edge 1 • 705 nmB6 • Red edge 2 • 740 nmB7 • Red edge 3 • 783 nmB8 • NIR • 842 nmB8A • Narrow NIR • 865 nmB11 • SWIR 1 • 1610 nmB12 • SWIR 2 • 2190 nm
Fit
- Best for
- New Production OrdersAgriculture
- Not ideal for
- Fastest Possible DeliverySnow Suppressed Products
- Strengths
- HazeThin CirrusCloud ShadowsEfficient Production
- Snow handling
- Keeps Snow
Ordering limits
Minimum period: 1 monthUpdate frequency: 1–7 daysDelivery: 1–7 days
Polygon constraints
- AOI
- 0.5 km²+
- Geometry
- Polygon, MultiPolygon
Inputs
- Data types
- OpticalSAR
- Required
- Sentinel-1Sentinel-2Landsat 8/9
Overview
Stratus-3 is the recommended ClearSKY production model for cloudless Sentinel-2 L2A imagery. It follows a similar architecture to Stratus-2, but has been trained further and optimized for more efficient production. For customers, that means the same familiar 10-band Sentinel-2 L2A output with faster production workflows and lower expected latency.
Notes & delivery
Model notes
• Recommended default for new customers.
• Same 10-band Sentinel-2 L2A output as Stratus-2.
• Optimized for more efficient production than Stratus-2.
Delivery notes
• Temporal revisit and delivery timing depend on input coverage, AOI, and order mode.
Output
- Type
- Multispectral
- Format
- L2A
- Resolution
- 10 m
Bands
B2 • Blue • 490 nmB3 • Green • 560 nmB4 • Red • 665 nmB5 • Red edge 1 • 705 nmB6 • Red edge 2 • 740 nmB7 • Red edge 3 • 783 nmB8 • NIR • 842 nmB8A • Narrow NIR • 865 nmB11 • SWIR 1 • 1610 nmB12 • SWIR 2 • 2190 nm
Fit
- Best for
- Fast DeliveryNear Real Time Workflows
- Not ideal for
- Maximum Input ContextCustomers Prioritizing Best Quality Over Speed
- Strengths
- Fast TurnaroundLow LatencyApi WorkflowsOperational Monitoring
- Snow handling
- Keeps Snow
Ordering limits
Minimum period: 1 monthUpdate frequency: 1–7 daysDelivery: 30 min+
Polygon constraints
- AOI
- 0.5 km²+
- Geometry
- Polygon, MultiPolygon
Inputs
- Data types
- OpticalSAR
- Required
- Sentinel-1Sentinel-2
- Optional
- Landsat 8/9
Overview
Stratus-2-Fast is built for customers who care most about low latency. It uses a similar architecture to Stratus-2 and Stratus-3, but relies on less input data to reduce production time. Landsat 8/9 can be used when needed, but is optional. When Landsat is not used, delivery can often be under 30 minutes, depending on AOI size, order mode, region, and input availability.
Notes & delivery
Model notes
• Landsat 8/9 is optional.
• Using fewer inputs can reduce delivery time.
• Orders without Landsat can often be delivered in under 30 minutes.
Delivery notes
• Fast delivery depends on AOI size, order mode, region, and input availability.
• Orders without Landsat input can often be delivered in under 30 minutes.
Output
- Type
- Multispectral
- Format
- L2A
- Resolution
- 10 m
Bands
B2 • Blue • 490 nmB3 • Green • 560 nmB4 • Red • 665 nmB5 • Red edge 1 • 705 nmB6 • Red edge 2 • 740 nmB7 • Red edge 3 • 783 nmB8 • NIR • 842 nmB8A • Narrow NIR • 865 nmB11 • SWIR 1 • 1610 nmB12 • SWIR 2 • 2190 nm
Fit
- Best for
- Existing Stratus 2 WorkflowsAgriculture
- Not ideal for
- New Default WorkflowsFastest Possible Delivery
- Strengths
- HazeThin CirrusCloud ShadowsHigh Latitude Sar Boost
- Snow handling
- Keeps Snow
Ordering limits
Minimum period: 1 monthUpdate frequency: 1–7 daysDelivery: 1–7 days
Polygon constraints
- AOI
- 0.5 km²+
- Geometry
- Polygon, MultiPolygon
Inputs
- Data types
- OpticalSAR
- Required
- Sentinel-1Sentinel-2Landsat 8/9
Overview
Stratus-2 is the original ClearSKY production model for cloudless Sentinel-2 L2A imagery. It uses Sentinel-1, Sentinel-2, and Landsat 8/9 to produce 10-band multispectral Sentinel-2 outputs. It remains available for existing workflows and customers who require continuity with previous Stratus-2 deliveries, but Stratus-3 is recommended for most new orders.
Notes & delivery
Model notes
• Use Stratus-3 for most new workflows.
• SAR improves timeliness in high-latitude regions.
Delivery notes
• Temporal revisit and delivery timing depend on input coverage, AOI, and order mode.
Output
- Type
- Multispectral
- Format
- L2A
- Resolution
- 10 m
Bands
B2 • Blue • 490 nmB3 • Green • 560 nmB4 • Red • 665 nmB5 • Red edge 1 • 705 nmB6 • Red edge 2 • 740 nmB7 • Red edge 3 • 783 nmB8 • NIR • 842 nmB8A • Narrow NIR • 865 nmB11 • SWIR 1 • 1610 nmB12 • SWIR 2 • 2190 nm
Fit
- Best for
- Legacy WorkflowsExisting Customers Only
- Not ideal for
- New WorkflowsSnow Research
- Strengths
- Snow SuppressionStable Time Series
- Snow handling
- Removes Snow
Ordering limits
Minimum period: 1 monthUpdate frequency: 1–7 daysDelivery: 1–7 days
Polygon constraints
- AOI
- 0.5 km²+
- Geometry
- Polygon, MultiPolygon
Inputs
- Data types
- OpticalSAR
- Required
- Sentinel-1Sentinel-2Landsat 8/9
Overview
Stratus-2 (No Snow) is a legacy snow-suppression variant of Stratus-2. It was designed for users who wanted a consistent snow-free surface in regions with sporadic or transient snow. This model is planned for deprecation and should not be used for new workflows unless ClearSKY specifically recommends it for your case.
Notes & delivery
Model notes
• Soon deprecated.
• Do not start new workflows on this model.
• Designed to suppress snow to stabilize vegetation/soil time-series.
Delivery notes
• Stratus-2 (No Snow) is planned for deprecation and should not be used for new workflows unless ClearSKY specifically recommends it.
Output
- Type
- Multispectral
- Format
- BOA
- Resolution
- 10 m
Bands
B1 • Coastal aerosol • 443 nmB2 • Blue • 490 nmB3 • Green • 560 nmB4 • Red • 665 nmB5 • Red edge 1 • 705 nmB6 • Red edge 2 • 740 nmB7 • Red edge 3 • 783 nmB8 • NIR • 842 nmB8A • Narrow NIR • 865 nmB9 • Water vapour • 945 nmB11 • SWIR 1 • 1610 nmB12 • SWIR 2 • 2190 nm
Fit
- Best for
- Full Spectral WorkflowsAdvanced Remote Sensing Users
- Not ideal for
- Standard Production Orders
- Strengths
- Full Spectral OutputImproved Sar Noise HandlingModular InputsMulti Sensor Workflows
- Snow handling
- TBD
Ordering limits
Minimum period: 1 monthUpdate frequency: 1–7 daysDelivery: TBD
Polygon constraints
- AOI
- 0.5 km²+
- Geometry
- Polygon, MultiPolygon
Inputs
- Data types
- OpticalSAR
- Required
- Sentinel-1Sentinel-2
- Optional
- Landsat 8/9
Overview
Nimbus (Multispectral) is available for users who need full spectral Sentinel-2 outputs and ClearSKY's next-generation modular data-fusion pipeline. It is designed around flexible input handling and improved SAR processing compared with the Stratus family.
Notes & delivery
Model notes
• Available with published monitoring and Single Image rates.
• Produced as TOA. BOA is available as an optional download format.
Delivery notes
• Delivery timing depends on AOI size, order mode, region, and input availability.
Output
- Type
- Index
- Format
- NDVI
- Resolution
- 10 m
Index
NDVI
Fit
- Best for
- Ndvi Time SeriesDashboards
- Not ideal for
- Applications Requiring Multispectral
- Strengths
- Lighter DownloadsSimple WorkflowsVegetation MonitoringDashboard Ready Output
- Snow handling
- TBD
Ordering limits
Minimum period: 1 monthUpdate frequency: 1–7 daysDelivery: TBD
Polygon constraints
- AOI
- 0.5 km²+
- Geometry
- Polygon, MultiPolygon
Inputs
- Data types
- OpticalSAR
- Required
- Sentinel-1Sentinel-2
- Optional
- Landsat 8/9
Overview
Nimbus (NDVI) is available for users who want vegetation-index time series without downloading full multispectral imagery. It is designed for lighter workflows, dashboard use cases, and monitoring pipelines where NDVI is the primary output.
Notes & delivery
Model notes
• Available with published monitoring and Single Image rates.
• Output is NDVI only.
• No multispectral download formats are provided.
Delivery notes
• Delivery timing depends on AOI size, order mode, region, and input availability.
Output
- Type
- TBD
- Format
- TBD
- Resolution
- TBD
Bands
Bands: TBD
Fit
- Not ideal for
- Production Workflows Requiring Published Specifications
Inputs
- Data types
- OpticalSAR
- Required
- Sentinel-1Sentinel-2
- Optional
- Landsat 8/9CBERS MUXCBERS WFIAmazonia-1 WFI
Overview
Cumulus is supplied through a configuration-specific quote for Monitoring and Single Image use. Sentinel-1 and Sentinel-2 are included, while Landsat 8/9, CBERS MUX, CBERS WFI, and Amazonia-1 WFI can be requested independently as optional input groups.
ClearSKY confirms source availability, output configuration, delivery terms, and pricing in the quote before an order is accepted.
Notes & delivery
Model notes
• Pricing and supported input combinations are confirmed in a quote.
• Output and delivery specifications are agreed for the requested configuration.
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