IRTAM 3D global real-time assimilative model of ionospheric electron density
Description
IRI-based Real-Time Assimilative Model (IRTAM) is a collection of global 3D ionospheric electron density (Ne) computations produced every 15 minutes to follow the timeline of the ionospheric weather dynamics. IRTAM 3D belongs to a class of "assimilative IRI" models that replace the internal coefficients of International Reference Ionosphere (IRI), an empirical quiet-time model of ionosphericclimate with updated coefficients that are obtained by smoothly transforming ("morphing") IRI into agreement with available observations. The observations are provided provided in near-real-time by Global Ionosphere Radio Observatory (GIRO) ionosondes. IRTAM 3D is a 4DVAR assimilative model whose single computation provides the best fit of the model to 24-hour history window of observations prior to analysis time. Its underlying formalism of representing Ne distributions is the same as in IRI: a set of 2D surface maps are computed to obtain the "anchor" points of the 1D vertical extent of Ne at any location and time.
Interact
| Interaction Method | Description | Data Format | Link |
|---|---|---|---|
| The GAMBIT Explorer landing page has the list of LGDC data resources (numerical, display) and documentation for accessing IRTAM 3D collection. |
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GAMBIT Explorer Landing Page
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| The IRTAM-3D landing page has the latest animated images of the latest 24-hour IRTAM 3D computations. |
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IRTAM 3D Latest Animation Page
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| The Local Weather Charts landing page has the 24-hour images of the 24-hour IRTAM weather charts at any given location and reference map. |
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IRTAM 3D Local Weather Charts
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| The GAMBIT Coefficients Download landing page provides access to the expansion coefficients for IRTAM 3D representation of the global ionospheric weather. Requires user authentication in the registered or guest category. The weather coefficients are used to replace the climate coefficients in IRI 2020 model. |
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IRTAM 3D Global Weather Numerical Products
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Properties
| Property | Value |
|---|---|
| Type (1/2) | |
| Type (2/2) | |
| Project | |
| Data Level | |
| Result | Not used |
| Permission | |
| Procedure | |
| Role (from Related Party (1/2) > Responsible Party Info) | |
| Party (from Related Party (1/2) > Responsible Party Info) | |
| Role (from Related Party (2/2) > Responsible Party Info) | |
| Party (from Related Party (2/2) > Responsible Party Info) | |
| Result Time | Not used |
| Name (from Collection Results > Source (1/4) > Online Resource) | GAMBIT Explorer Landing Page |
| URL (from Collection Results > Source (1/4) > Online Resource > Linkage) | https://giro.uml.edu/GAMBIT/ |
| Protocol (from Collection Results > Source (1/4) > Online Resource) | HTTPS |
| Data Format (from Collection Results > Source (1/4) > Online Resource) | |
| Description (from Collection Results > Source (1/4) > Online Resource) | The GAMBIT Explorer landing page has the list of LGDC data resources (numerical, display) and documentation for accessing IRTAM 3D collection. |
| Service Function (from Collection Results > Source (1/4) > Online Resource) | |
| Name (from Collection Results > Source (2/4) > Online Resource) | IRTAM 3D Latest Animation Page |
| URL (from Collection Results > Source (2/4) > Online Resource > Linkage) | https://giro.uml.edu/IRTAM/ |
| Protocol (from Collection Results > Source (2/4) > Online Resource) | HTTPS |
| Data Format (from Collection Results > Source (2/4) > Online Resource) | |
| Description (from Collection Results > Source (2/4) > Online Resource) | The IRTAM-3D landing page has the latest animated images of the latest 24-hour IRTAM 3D computations. |
| Service Function (from Collection Results > Source (2/4) > Online Resource) | |
| Name (from Collection Results > Source (3/4) > Online Resource) | IRTAM 3D Local Weather Charts |
| URL (from Collection Results > Source (3/4) > Online Resource > Linkage) | https://giro.uml.edu/rix/gambit-local-nowcast/ |
| Protocol (from Collection Results > Source (3/4) > Online Resource) | HTTPS |
| Data Format (from Collection Results > Source (3/4) > Online Resource) | |
| Description (from Collection Results > Source (3/4) > Online Resource) | The Local Weather Charts landing page has the 24-hour images of the 24-hour IRTAM weather charts at any given location and reference map. |
| Service Function (from Collection Results > Source (3/4) > Online Resource) | |
| Name (from Collection Results > Source (4/4) > Online Resource) | IRTAM 3D Global Weather Numerical Products |
| URL (from Collection Results > Source (4/4) > Online Resource > Linkage) | https://giro.uml.edu/rix/gambit-coeffs/ |
| Protocol (from Collection Results > Source (4/4) > Online Resource) | HTTPS |
| Data Format (from Collection Results > Source (4/4) > Online Resource) | |
| Description (from Collection Results > Source (4/4) > Online Resource) | The GAMBIT Coefficients Download landing page provides access to the expansion coefficients for IRTAM 3D representation of the global ionospheric weather. Requires user authentication in the registered or guest category. The weather coefficients are used to replace the climate coefficients in IRI 2020 model. |
| Service Function (from Collection Results > Source (4/4) > Online Resource) | |
| Phenomenon Time | Not used |
| Data Quality Flag (from Quality Assessment) | |
| Metadata Quality Flag (1/5) (from Quality Assessment) | |
| Metadata Quality Flag (2/5) (from Quality Assessment) | |
| Metadata Quality Flag (3/5) (from Quality Assessment) | |
| Metadata Quality Flag (4/5) (from Quality Assessment) | |
| Metadata Quality Flag (5/5) (from Quality Assessment) | |
| Observed Property | Not used |
| Named Region (1/2) (from Feature Of Interest > Feature Of Interest) | |
| Named Region (2/2) (from Feature Of Interest > Feature Of Interest) |
Identifier
| Local ID | DataCollection_IRTAM-3D_GIRO_NECTAR |
| Namespace | pithia |
| Version | 1 |
| Created | Sunday 27th Feb. 2022, 20:30:00 |
| Last Modified | Wednesday 13th Sept. 2023, 10:50:00 |