SOHO Joint Operations Programme 92
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CDS/TRACE - 18th May 1998
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Sunspot Plumes
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P.R. Young, H. E. Mason and R. Shine

The observation of sunspot plumes by TRACE will be a high priority
whenever sizeable sunspots occur.

Sunspot plumes are readily seen by CDS and Young & Mason (1998)
present observations of AR 7968 which show such plumes in a number of
transition region and low coronal lines (e.g., Mg VI 349, Ca X 558
and Mg IX 368).

The CDS observations will be based upon the successful existing
studies TREG22 and TRANREG. The latter focusses on temperature,
density and abundances diagnostics in the region 10^5 - 10^6 K, while
the former is suitable for time variability and line profiles in the
transition region and lower corona.


TRACE
	Single summary images in WL, Fe XII and Fe XV
	Repeats of C IV and Fe IX

CDS
	1) Overview image (LARGE_T, 4x4 arcmin^2, 35mins)
     either
	2) Repeats of TREG22 (1x2 arcmin^2, each raster 30mins)
     or
	2) Repeats of TRANREG (2x2 arcmin^2, each raster 15mins)
     or
	2) Repeats of TRANREG+TREG22

Duration:  	4-5 hours

Observation period: 

	Occasionally as AR transits disk


TRACE

Contact:	Dick Shine

Suggested sequence(s):

	Single summary images in WL, Fe XII and Fe XV
	Repeats of C IV and Fe IX