#Jhelioviewer drivers#
#Jhelioviewer software#

The fact that whether slow and fast CMEs (as based on their relative speed to the average solar wind speed) are associated with different processes at the location of their ejection is still debatable. The angular width of the CMEs is a crucial parameter in the study of their kinematics.

#Jhelioviewer drivers#

As a first step towards supporting science planning of the upcoming Solar Orbiter mission, JHelioviewer offers a virtual camera model that enables users to set the vantage point to the location of a spacecraft or celestial body at any given time.Д¬oronal Mass Ejections (CMEs) are highly dynamic events originating in the solar atmosphere, that show a wide range of kinematic properties and are the major drivers of the space weather.

#Jhelioviewer software#

The software integrates solar event data and a time line display. They can perform basic image processing in real time, track features on the Sun and interactively overlay magnetic field extrapolations. With JHelioviewer, users can visualise the Sun for any time period between September 1991 and today. The JHelioviewer software is open source, platform independent and extendable via a plug-in architecture. The JPEG2000 standard offers useful new features that facilitate the dissemination and analysis of high-resolution image data and offers a solution to the challenge of efficiently browsing petabyte-scale image archives. Since the first release of JHelioviewer, the scientific functionality of the software has been extended significantly, and the objective of this paper is to highlight these improvements.

To address these challenges, we have developed JHelioviewer, a visualisation tool for solar data based on the JPEG2000 compression standard and part of the open source ESA/NASA Helioviewer Project. From a scientist's perspective this poses three problems: accessing, browsing and finding interesting data as efficiently as possible. In particular, the large volume of SDO data presents challenges: it is available only from a few repositories, and full-disk, full-cadence data for reasonable durations of scientific interest are difficult to download practically due to their size and download data rates available to most users. Solar observatories are providing the world-wide community with a wealth of data, covering large time ranges, multiple viewpoints, and returning large amounts of data.