nerc.ac.uk

Ap in real time : IUGG- Sapporo, Japan, July 2003 : session GAV.02

Clarke, Ellen; Linthe, Hans-Joachim. 2003 Ap in real time : IUGG- Sapporo, Japan, July 2003 : session GAV.02. [Poster] In: XXIII IUGG General Assembly, Sapporo, Japan, 30 June- 11 July 2003. (Unpublished)

This is the latest version of this item.

Before downloading, please read NORA policies.
[img]
Preview
Text
Clarke_Linthe_IUGG2003_Apest.pdf

Download (2MB) | Preview

Abstract/Summary

The 3-hourly planetary indices Kp and ap and the daily planetary index, Ap, which are derived by GeoForschungsZentrum (GFZ), Potsdam, on behalf of the International Service of Geomagnetic Indices (ISGI), are made available twice per month. This time delay is inevitable because of the need for a high quality homogenous data set. However, the process may not be sufficiently responsive to the needs of the space weather community, in particular forecasters, where small discrepancies in the data are usually less important than their timely availability. An automated algorithm has been developed by the British Geological Survey (BGS) to derive real-time estimates of the ap and Ap indices, called apest and Ap respectively. These are available on-line at www.bgs.ac.uk/gifs/apindex.html. The derivation process of these est indices is described, which has been designed to match that of the definitive indices as closely as possible. A comparison between the BGS values of ap , Ap and the corresponding definitive values is presented. Modifications to the derivation est est process are still on-going, taking advantage of the advances made by the INTERMAGNET programme in data delivery. The ultimate goal is for GFZ to take over the responsibility for derivation and delivery of the real time indices, which could be considered quick-look or provisional values.

Item Type: Publication - Conference Item (Poster)
Programmes: BGS Programmes > Seismology and Geomagnetism
NORA Subject Terms: Earth Sciences
Space Sciences
Data and Information
Date made live: 21 Nov 2012 15:14 +0 (UTC)
URI: https://nora.nerc.ac.uk/id/eprint/20498

Available Versions of this Item

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...