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I obtainedby NOAA-6 Satellite on 30 May 1980 and enhanced in the Scripps-!

Institution of Oceanography Remote Sensing Facility.

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I -

~UNCLAS&IEJ -- __

SECURITY CLASSIFICATION OF THIS PAGE (Rhen Data Eitered)

READ INST UCTIONREPORT DOCUMENTATION PAGE BEFORE COMP T ORM

1. REPORT NUMBE_ 12. GOVT ACCESSION NO. 3. RECIPIENT'S CATALOG NUMBER

ON, WEST Report 81-5SUP Jf - /'11(&'?IOS 4 TITLE (md Subtitle) 5. TYPE OF REPORT & PERIOD COVERED

SUPPLEMENT TO ARABIAN SEA PROJECT OF 1980: Technical Report

COMPOSITES OF INFRARED IMAGES 6. PERFORMING ORG. REPORT NUMBER

.7. AUTHOR(s) S. CONTRACT OR GRANT NUMBER(s)

Ben J. Cagle and Robert Whritner

9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT. PROJECT. TASKAREA & WORK UNIT NUMBERS

II. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE

Office of Naval Research December 1981Western Regional Office 13. NUMBER OF PAGES

1030 East Green St., Pasadena, California 9110614. MONITORING AGENCY NAME & ADDRESS(If different from Controiling Office) 15. SECURITY CLASS. (of this report)

UNCLASSIFIED

15a. DECLASSI FICATION/ DOWNGRADINGSCHEDUIlE

16. DISTRIBUTION STATEMENT (of this Report)

Approved for public release; distribution unlimited.

17. DISTRIBUTION STATEMENT (of the abstract entered In Block 20. If different from Report)

lB. SUPPLEMENTARY NOTES

19. KEY WORDS (Continue olt reverse aide If necessary and Identify by block number) - ,"

Infrared ImageryArabian Sea :,4Remote Sensing

20. ABSTRACT (Continue on reverse aide If necessary and Identify by block number)

A technique was developed for determining the mesoscale features of theArabian Sea, and reported on in ONRWEST Report 81-3. A method for assemblingcomposites of images in mosaic form is presented. Enhanced images are pre-related to the Northeast and Southwest Monsoons, respectively.

This supplement to ONRWEST Report 81-5 provides larger images forFigures 3 6 through 45.

DD OR 1473 EDITION OF I NOV 65 IS OBSOLETE UNCLASSIFIEDS/N 0102- LF- 014- 6601 SECURITY CLASSIFICATION OF THIS PAGE (When Dats, Bntared)

ONRWEST 81-5SUP

SUPPLEMENT TOARABIAN SEA PROJECT OF 1980--COMPOSITES

OF

INFRARED IMAGES

This report was prepared by

Mr. Ben J. Cagle, ONRWEST

and

Mr. Robert Whritner, Scripps Institution of Oceanography.

Office of Naval ResearchWestern Regional Office

1030 East Green Street

Pasadena, CA 91106

December 1981

APPROVED:

i:

" 'Scientific

Director

K4

It

4*

EXPLANATION

It became apparent, by feedback from che distribution of ONRWEST Report 81-5,that the composites of infrared images of the Arabian Sea should be reproduced in alarger size. The larger size permits some improvement in spatial details. Also,

_ an effort has been made to improve the contrast in grey shades representing theocean features, which were the subject of the original report. Figures 1 and 36

1 through 45 of ONRWEST Report 81-5 are reproduced herein.

4 The reader is referred to ONRWEST Report 81-5 for explanations of the datacontained herein.

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Figure 36. Arabian Sea Mosaic with Interpretation,28 March 1980.

The composite of enhanced images shown in Figure -

26 is shown here with a composite of surfaceinterpretations for each image. Relative flowis indicated by arrows, and strong and weak frontsare indicated by solid and dashed lines r. spec-tively. Shear flow is indicated by a " "x ,Slicking from daytime heating app! . .,e there

has been little surface mixing.

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Figure 37. Arabian Sea Mosaic with Interpretation,

15 April 1980.

The composite of enhanced images shown in Figure27 is shown here with a composite of surfaceinterpretations for each image. Relative flowis indicated by arrows, and strong and weak fronts

are indicated by solid and dashed lines respec-tively. (A poor alignment of lines indicatingI fronts occurred in the printing process.)

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Figure 38. Arabian Sea Mosaic with Interpretation,21 May 1980.

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The composite of enhanced Imaiges shown in Figure28 is shown here with a composite of surfaceinterpretations for each image. Relative flowis indicated by arrows, and strong and weak frontsare indicated by solid and dashed lines respec-tively. Shear flow is indicated by a row of "x's".Upwelling regions are designated.

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The composite of enhanced images shown in Figure29 is shown here with a composite of surfaceinterpretations for each image. Relative flow

is indicated by arrows, and strong and weak frontsare indicated by solid and dashed lines respec-tively. Shear flow is indicated by a row of "x's".Upwelling is designated. (A poor alignment oflines indicating fronts occurred in the printingprocess.)

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Figure 40. Arabian Sea Mosaic with Interpretation,28 September 1980.

The composite of enhanced images shown in Figure30 is shown here with a composite of surfaceinternretations for each image. Relative flowis indicated by arrows, and strong and weak frontsare indicated by solid and dashed lines respec-tively.

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Figure 41. Arabian Sea Mosaic with Interpretation,30 September 1980.

The composite of enhanced images shown in Figure31 is shown here with a composite of surface

interpretations for each image. Relative flowis indicated by arrows, and strong and weak fronts

are indicated by solid and dashed lines respec-

tively.

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The comoosite of enhanced images shown in Figure32 is shown here with a comrosite of surface

interpretations for each image. Relative flowis indicated by arrows, and strone and weak frontsare indicated by solid and dashed lines respec-tively. The interpretations in this mosaic aredescribed in more detail in Figures 15 through25.

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Figure 43. Arabian Sea Mosaic with Interpretation,25 November 1980.

The composite of enhanced images shown in Figure33 is shown here with a composite of surfaceinterpretations for each image. Only weak surfacefeatures are indicated.

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Figure 44. Arabian Sea Mosaic with Interpretation,

27 November 1980.

The composite of enhanced images shown in Figure

34 is shown here with a composite of surface

interpretations for each image. Clouds dominate

the field of view with some weak thermal features

indicated on the ocean surface.

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30 November 1980.

The composite of enhanced images shown in Figure

35 is shown here with a composite of surfaceinterpretations for each image. Relative flow

is indicated by arrows, and strong and weak fronts

are indicated by solid and dashed lines resnec-tively. (A poor alignment of lines indicating

fronts occurred in the printing process.)

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