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Record #112552:
- #112552
Main publication details
MARC recordIce detection during cloudy conditions over the Arctic regions using AVHRR satellite imagery / Göran Alm.
| Title: | Ice detection during cloudy conditions over the Arctic regions using AVHRR satellite imagery / Göran Alm. |
| Author(s): | Alm, Göran. |
| Date: | 1991. |
| In: | Geografiska Annaler. Series A. Physical Geography. (1991.), Vol. 73A(3-4) (1991) |
| Abstract: | Data recorded from Greenland to Norway, including Svalbard, on 23 May 1988. One thermal channel is used for cloud inventory, but is not suitable for separation of ice and open water, for which visible and near infrared channels are necessary. Problems arose when ice margin disappears under cloud. Visible and near-infrared are highly correlated in Arctic, due to lack of vegetated surfaces. By extracting small portion of uncorrelated features in these two channels, it is possible to estimate and map extent of sea ice, cloud types, and areas where ice and cloud overlap. |
| Notes: | Geografiska Annaler. Series A. Physical Geography. Vol. 73A(3-4) :155-166 (1991). |
| Keywords: | 551.32 -- Glaciology. 551.326 -- Floating ice. 551.326.7 -- Sea ice. 551.326.021 -- Floating ice, satellite sensing. 53.087.23 -- Remote sensing. 629.783 -- Satellites. E3 -- Glaciology: instruments and methods. (*60) -- Arctic Ocean and adjacent waters. (*617) -- Greenland Sea and Fram Strait. (*613) -- Svalbard waters. (*615) -- Norwegian Sea. |
| SPRI record no.: | 112552 |
LDR 01734naa#a2200000#a#4500 001 SPRI-112552 005 20230331155608.0 007 ta 008 230331s1991####xx#a##|##|###|0||#0|eng#d 035 ## ‡aSPRI-112552 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aAlm, Göran. 245 10 ‡aIce detection during cloudy conditions over the Arctic regions using AVHRR satellite imagery /‡cGöran Alm. 260 ## ‡a[S.l.] :‡b[s.n.],‡c1991. 300 ## ‡ap. 155-166 :‡bill., diags., tables. 500 ## ‡aGeografiska Annaler. Series A. Physical Geography. Vol. 73A(3-4) :155-166 (1991). 520 3# ‡aData recorded from Greenland to Norway, including Svalbard, on 23 May 1988. One thermal channel is used for cloud inventory, but is not suitable for separation of ice and open water, for which visible and near infrared channels are necessary. Problems arose when ice margin disappears under cloud. Visible and near-infrared are highly correlated in Arctic, due to lack of vegetated surfaces. By extracting small portion of uncorrelated features in these two channels, it is possible to estimate and map extent of sea ice, cloud types, and areas where ice and cloud overlap. 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.326 -- Floating ice.‡2udc 650 07 ‡a551.326.7 -- Sea ice.‡2udc 650 07 ‡a551.326.021 -- Floating ice, satellite sensing.‡2udc 650 07 ‡a53.087.23 -- Remote sensing.‡2udc 650 07 ‡a629.783 -- Satellites.‡2udc 650 07 ‡aE3 -- Glaciology: instruments and methods.‡2local 651 #7 ‡a(*60) -- Arctic Ocean and adjacent waters.‡2udc 651 #7 ‡a(*617) -- Greenland Sea and Fram Strait.‡2udc 651 #7 ‡a(*613) -- Svalbard waters.‡2udc 651 #7 ‡a(*615) -- Norwegian Sea.‡2udc 773 0# ‡7nnas ‡tGeografiska Annaler. Series A. Physical Geography. ‡gVol. 73A(3-4) (1991) ‡wSPRI-40621 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20230331