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Table of Contents - The Atmospheric Studies Group at TRC

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Section 2: Geophysical D<strong>at</strong>a Processors<br />

4. Terrain Elev<strong>at</strong>ion Output File: an ASCII file in the form<strong>at</strong> specified by the user. For example,<br />

choosing the model option 'CALMET' produces a gridded terrain file which can be directly read by<br />

MAKEGEO (e.g., TERREL.DAT) for use in CALMET.<br />

<strong>Table</strong> 2-1:<br />

Terrain D<strong>at</strong>abases<br />

D<strong>at</strong>abase<br />

Type<br />

Description Source File<br />

Form<strong>at</strong><br />

Reference<br />

System<br />

Sp<strong>at</strong>ial<br />

Resolution (m)<br />

USGS90<br />

1-deg DEM<br />

3 arc-second d<strong>at</strong>a<br />

USGS ASCII Geographic<br />

(l<strong>at</strong>/lon)<br />

~90<br />

USGS30<br />

7.5 min USGS<br />

quadrangle<br />

USGS ASCII UTM 30<br />

3CD<br />

1-deg DEM<br />

3 arc-second d<strong>at</strong>a<br />

Rocky Mtn<br />

Communic<strong>at</strong>ions<br />

CD-ROM<br />

Binary<br />

Geographic<br />

(l<strong>at</strong>/lon)<br />

~90<br />

SRTM1<br />

1-deg HGT form<strong>at</strong><br />

1 arc-second d<strong>at</strong>a<br />

covering USA<br />

USGS Binary Geographic<br />

(l<strong>at</strong>/lon)<br />

~30<br />

SRTM3<br />

3-deg HGT form<strong>at</strong><br />

3 arc-second d<strong>at</strong>a<br />

covering world<br />

USGS Binary Geographic<br />

(l<strong>at</strong>/lon)<br />

~90<br />

GTOPO30<br />

(SRTM30)<br />

30 second DEM<br />

40lon. by 50l<strong>at</strong>.<br />

USGS Binary Geographic<br />

(l<strong>at</strong>/lon)<br />

~900<br />

covering world<br />

ARM3<br />

30 second d<strong>at</strong>a<br />

4 N-S sheets<br />

covering U.S.<br />

CALPUFF CD-<br />

ROM (available<br />

from NTIS)<br />

ASCII<br />

Geographic<br />

(l<strong>at</strong>/lon)<br />

~900<br />

DMDF<br />

7.5 min Alberta<br />

DEM<br />

Alberta Environ.<br />

Protection<br />

ASCII UTM ~100<br />

USGSLA 30 sec DEM USGS Binary Lambert<br />

Azimuthal<br />

~1000<br />

NZGEN<br />

Generic file<br />

form<strong>at</strong><br />

Misc. ASCII Geographic<br />

(l<strong>at</strong>/lon)<br />

Arbitrary<br />

2-7

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