Information about the used projection and corner coordinates for the different regions.

This information is not complete right now. Please contact us if you need information about any other region. The data files in HDF and GEOTIFF format are accessible via the data archive.

Polarstereographic projection is used for all regions. The detailed parameters are given below.

abbreviations:
UL: upper left corner
UR: upper right corner
LL: lower left corner
LR: lower right corner
slat: standard parallel where scaling is true
rot: rotation to 0° meridian

Complete Arctic
---------------
geographical corner coordinates:
UL 30.98°N, 168.35°E
UR 31.37°N, 102.34°E
LL 33.93°N, -80.74°W
LR 34.35°N, -9.97°W
polarstereographic parameters:
slat=70°
rot=-45°
UL x:-3850 km, y:5850 km
UR x:3750 km, y:5850 km
LL x:-3850 km, y:-5350 km
LR x:3750 km, y:-5350 km

Complete Antarctic
------------------
geographical corner coordinates:
UL -39.23°S, -42.24°W
UR -39.23°S, 42.24°E
LL -41.45°S, -135.00°W
LR -41.45°S, 135.00°E
polarstereographic parameters:
slat=70°
rot=-45°
UL x:-3950 km, y:4350 km
UR x:3950 km, y:4350 km
LL x:-3950 km, y:-3950 km
LR x:3950 km, y:-3950 km

Ross Sea
--------
geographical corner coordinates:
UL -73.4694°S, -123.690°W
UR -76.9991°S, 135.000°E
LL -55.8559°S, -156.801°W
LR -57.2815°S, 164.055°E
polarstereographic parameters:
slat=-70°
rot=0°
UL x:-1500 km, y:-1000 km
UR x:1000 km, y:-1000 km
LL x:-1500 km, y:-3500 km
LR x:1000 km, y:-3500 km

Weddell Sea
-----------
geographical corner coordinates:
UL -53.2551°S, -54.3864°W
UR -53.2551°S, -5.61363°W
LL -67.1045°S, -72.5805°W
LR -67.1045°S, 12.5805°E
polarstereographic parameters:
slat=-70°
rot=-30°
UL x:-1700 km, y:3750 km
UR x:1700 km, y:3750 km
LL x:-1700 km, y:1850 km
LR x:1700 km, y:1850 km

Sea Of Okhotsk
--------------
geographical corner coordinates:
UL 46.956088°N, 140.33314°E
UR 46.936882°N, 149.99857°E 
LL 41.930538°N, 140.87241°E 
LR 41.914144°N, 149.42129°E 
polarstereographic parameters:
slat=45°                                                     
rot=145°                                                        
UL x:-350 km, y:-4287.5 km
UR x:375 km, y:-4287.5 km                                      
LL x:-350 km, y:-4850 km                                     
LR x:375 km, y:-4850 km

Svalbard
--------
geographical corner coordinates:                              
UL 85.295588°N, -78.690065°W                                   
UR 82.567677°N, 82.874981°E                                   
LL 73.747919°N, -16.389540°W
LR 72.781882°N, 25.201123°E                                   
polarstereographic parameters:                                
slat=70°                                                      
rot=0°                                                        
UL x:-500 km, y:-100 km                                    
UR x:800 km, y:-100 km                                      
LL x:-500 km, y:-1700 km                                      
LR x:800 km, y:-1700 km 

Greenland Sea
-------------
geographical corner coordinates:                              
UL 84.7432°N, -50.9638°W                                   
UR 78.3113°N, 47.3801°E                                   
LL 63.2766°N, -25.7106°W
LR 61.4340°N, 1.80141°E                                 
polarstereographic parameters:                                
slat=80°                                                  
rot=-20°                                                      
UL x:-300 km, y:-500 km                                    
UR x:1200 km, y:-500 km                                      
LL x:-300 km, y:-3000 km                                      
LR x:1200 km, y:-3000 km

Caspian Sea
-----------
geographical corner coordinates:
UL 47.332169°N, 45.962289°E
UR 47.332169°N, 54.037711°E 
LL 42.841218°N, 46.386119°E
LR 42.841218°N, 53.613881°E
polarstereographic parameters:
slat=45°
rot=50°
UL x:-300 km, y:-4250 km
UR x:300 km, y:-4250 km
LL x:-300 km, y:-4750 km
LR x:300 km, y:-4750 km

Baltic Sea
-----------
geographical corner coordinates:
UL 65.810470°N, 7.8113671°E
UR 65.432026°N, 35.854546°E
LL 53.033305°N, 12.215416°E
LR 52.803333°N, 30.189923°E
polarstereographic parameters:
slat=60°
rot=20°
UL x:-540 km, y:-2500 km
UR x:710 km, y:-2500 km
LL x:-540 km, y:-3950 km
LR x:710 km, y:-3950 km