| 1 | === 3. Observer Location === |
| 2 | |
| 3 | No Search Parameters have been defined to describe observer location. |
| 4 | Two classes of description are appropriate, one for ground-based |
| 5 | observations and one for space-based data, particularly ''in situ'' |
| 6 | measurements. For Earth observatories, a straightforward geographic |
| 7 | latitude / longitude / altitude description should suffice, but it is |
| 8 | not clear how useful this would be as a discriminator for data searches. |
| 9 | For space platforms, where the description of location for ''in situ'' |
| 10 | data is especially important, we defer to the model (to be) adopted |
| 11 | by the VSPO. It should be noted, though, that as stereoscopic imaging |
| 12 | of the Sun from space observatories becomes more important, search |
| 13 | parameters associated with observer location with respect to solar |
| 14 | coordinate frames may have to be introduced. |