organisation	SCEOS
user_name	Owen Turpin
user_organisation	Department of Geography Sheffield Centre for Earth Observation Science University of Sheffield Winter Street SHEFFIELD S10 2TN UK
date	21st September 1997
data_set_name	Tjaktjajaure DEM
data_date	Unknown
description	Digital elevation model of Tjaktjajaure, North Sweden (BASSW) 50 m spatial resolution 0.1 m vertical resolution (although standard error is 2.5 m) Maximum elevation: 2057.9 m (catchment sub-area: 2044m) Minimum elevation: 282.7 m (catchment sub-area: 450m) Mean elevation: 760.1 m (catchment sub-area: 933)
raster_vector	RASTER
filename	Arc/Info directory: /tjakdem
software	Original software unknown. Data supplied from SMHI as Arc/Info .ASC table, converted to Arc/Info GRID using ASCIIGRID command (Version 7.0.4).
formats	ASCII text file. PCI EASI/PACE .PIX format ERDAS IMAGINE .IMG format
operating_system	UNIX SunOS 5.5.1
format	Arc/Info GRID
projection	Coordinate system: Projection: Transverse Units: Metres Major axis: 6377397.0 Minor axis: 6356079.0 Scale factor at central meridian: 1.0 Longitude at central meridian: 15deg 48' 29.8" Latitude of origin: 0deg 0' 0.0" False easting : 1 500 000.0 m False northing: 0.0 m RT90 map projection
data_quality	NO
resolution	50 m pixel resolution
attributes	N/A
methods	All measurements are based on photogrammetric methods. The creation started in 1970 and ended in 1990.
other	DEM created by the Swedish National Land Survey (Lantmaeteriverket). DEM does not contain breaklines. Hydrological integrity has not been checked. Lakes are known to be flat. (Database has been used to create water divides automatically and seems to work well - Barbro Johansson)
copyright	Use restricted to SMHI and SCEOS personnel
contact	Bernth Samuelsson, Research and Development Department, Swedish Meteorological and Hydrological Institute S-601 76 Norrkoeping SWEDEN tel: 0046 11 15 xx xx fax: 0046 11 17 02 07