Keterencfi DIM liui tu uu MAY io 1965 t^kpn from the library. · 2017-11-27 · Titional Bureau or...

52
Titional Bureau or sianuai-u® Library, N.W. Bldg MAY io 1965 CRPL-F 248 PART B Keterencfi DIM liui tu uu- t^kpn from the library. FOR OFFICIAL DISTRIBUTION PART B SOLAR - GEOPHYSICAL DATA ISSUED APRIL 1965 U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS CENTRAL RADIO PROPAGATION LABORATORY BOULDER, COLORADO

Transcript of Keterencfi DIM liui tu uu MAY io 1965 t^kpn from the library. · 2017-11-27 · Titional Bureau or...

Titional Bureau or sianuai-u®

Library, N.W. Bldg MAY io 1965

CRPL-F 248 PART B

Keterencfi DIM liui tu uu- t^kpn from the library.

FOR OFFICIAL DISTRIBUTION

PART B

SOLAR - GEOPHYSICAL DATA

ISSUED

APRIL 1965

U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS

CENTRAL RADIO PROPAGATION LABORATORY BOULDER, COLORADO

CRPL-F 248

PART B

NATIONAL BUREAU OF STANDARDS CENTRAL RADIO PROPAGATION LABORATORY

BOULDER, COLORADO

Issued

30 April 1965

SOLAR - GEOPHYSICAL DATA

CONTENTS

i Revisions to Descriptive Text

I DAILY SOLAR INDICES

(a) Relative Sunspot Numbers and 2800 Mc/s Solar Flux - February, March 1965 (b) Graph of Sunspot Cycle

II SOLAR CENTERS OF ACTIVITY

(a) Calcium Plage and Sunspot Regions - March 1965 (b) Magnetic Classifications of Sunspots (Mt. Wilson) - March 1965 (c-e) Final Coronal Line Emission Indices - October, November, December 1964 (f-g) Provisional Coronal Line Emission Indices - February, March 1965

III SOLAR FLARES

(a-d) Optical Observations - March 1965 (e) Flare Patrol Observations - March 1965 (f-i) Optical Observations - November 1964 (j) Flare Patrol Observations - November 1964 (k-o) Optical Observations - December 1964 (p) Flare Patrol Observations - December 1964

(q) Ionospheric Effects (SWF-SEA-SCNA-SPA-SES-SFD-Bursts) - February 1965 (r) 26 Mc/s - Riometer Events (Frobisher Bay) - February 1965

IV SOLAR RADIO WAVES

(a) 2800 Mc/s Outstanding Occurrences (ARO-Ottawa; DRAO-Pent icon) - March 1965 (b) 108 Mc/s Outstanding Occurrences (NBS-Boulder) - March 1965 (c) 7.6-41 Mc/s Spectral Observations (HAO-Boulder) - March 1965 (d-i) 9.1 cm Spectroheliograms (Stanford) - March 1965

V COSMIC RAY INDICES

(a) Neutron Monitors (Churchill - Climax - Dallas) - February 1965 (b) Neutron Monitor (Deep River) - February 1965

VI GEOMAGNETIC ACTIVITY INDICES

(a) C, Kp, Ap and Selected Quiet and Disturbed Days - February 1965 (b) Chart of Kp by Solar Rotations - 1964, 1965

VII RADIO PROPAGATION QUALITY INDICES

(a) CRPL Quality Figures and Forecasts - North Atlantic and North Pacific - February 1965

(b) Graphs Comparing Forecasts and Observed Quality - High

Latitude - February 1965 (c-d) Graphs of Useful Frequency Ranges - February 1965

VIII ALERT PERIODS AND SPECIAL WORLD INTERVALS

(a) IQSY Alert Periods - March 1965

The descriptive text was republished in November 1964. Addenda have been given in the introduction to each of the CRPL-F Part B reports, December 1964 through March 1965.

Sunspot Data:

Starting with the Mount Wilson sunspot data for March 1965, the Mount Wilson group number is given for each group. This is the group number of the series which used to be published in the Publicationsof the Astronomical Society of the Pacific. In the data sent out each month only the groups for which they have magnetic observations are reported. Therefore, the group numbers for the groups for which they do not have magnetic observations will not appear on the monthly data sheets.

Flares:

In CRPL-F 244, on text page, "s" flare definition was added to IAU remarks. After consultation with Dr. Michard, a better definition for flare footnote "s" is as follows:

"s" = brightening follows disappearance of filament, occurs in position of former filament.

l

Ia DAILY SOLAR INDICES

March 1965

Zurich Provisional Relative Sunspot

Numbers

RZ

Daily Values Solar Flux at 2800 Me, Ottawa, Canada

Flux S SA

1 13 76.5 75.1 2 0 75.3 74.0 3 0 75.0 73.7 4 8 75.0 73.8 5 7 76.1 74.8

6 29 76.7 75.5 7 26 77.0 75.8 8 7 74.5 73.4 9 0 73.0 71.9

10 12 73.1 72.1

11 9 71.9 70.9 12 18 73.5 72.6 13 16 75.6 74.6 14 17 74.6 73.7 15 12 72.7 71.9

16 9 71.3 70.5 17 11 71.6 70.8 18 22 75.0 74.3 19 17 77.0 76.3 20 19 74.4 73.8

21 9 74.0 73.4 22 0 72.7 72.1 23 0 73.0 72.5 24 7 72.5 72.0

25 17 73.8 73.4

26 10 73.3 73.0 27 18 72.1 71.8 28 12 71.7 71.4 29 9 72.0 71.7 30 9 71.4 71.2 31 8 71.6 71.4

Mean; 11.3 73.8 73.0

Feb. 1965

American Relative Sunspot Numbers

rA'

1 13 2 12

3 13 4 11 5 10

6 17 7 19 8 20

9 20 10 22

11 21 12 22

13 22 14 22

15 24

16 14

17 10 18 3 19 0 20 0

21 0 22 0 23 0 24 4 25 14

26 19 27 22 28 19

Mean: 13.3

COMMERCE STANDARDS BOULDER

Ib

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AND

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ERV

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SUN

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T N

UM

BERS

I la CALCIUM PLAGE AND SUNSPOT REGIONS

MARCH 1965

MARCH

1965

LAT. MCMATH

PLAGE NUMBER

RETURN OF

REGION

CALCIUM PLAGE DATA SUNSPOT DATA

CMP VALUES HISTORY AGE (ROTA¬ TIONS)

DATE FIRST

a)

DURA¬ TION (DATS)

a)

CMP VALUES HISTORY AREA INT AREA COUNT

2.0 S04 7704(2) New 1500 2 Z - d i 2/23 >8

2.0 S17 7709 New 200 1.5 b - d i 2/27 24 2.6 S24 7711(3) New 100 1 b - d i 2/28 1

2.7 NO 9 7708 7661 1600 2.5 1-1 2 < 2/26 >5 2.9 N22 7707 7660 2300 3 Z - ? 2 < 2/26 >5 (97) (1) b - d

3.5 N30 7714 New 100 2 b - d 1 3/1 >2

4.5 N29 7710 New (300) (1) l - ? 1 2/27 24 5.7 N28 7712 7664 (400) (2) 1- Z 3 2/28 12 (218) (2) b - d 7.8 N19 7716 New (400) (2.5) b — l 1 £ 3/10 >4 (72) (3) b ~ l 8.9 S34 7719(3) New (200) (1) b - d 1 3/12 1

10.9 Nil 7722 (3) New (200) (3) b - d 1 3/15 1 12.6 S12 7724(3) New (100) (1) b - d 1 3/16 1 12.7 N23 7717 7674 600 1 ? \ d 3 < 3/10 >4

14.4 N16 7726 New (100) (1) b — i 1 3/18 2 14.6 N24 7720 New 200 2 b - d 1 3/13 3

15.8 S12 7723 (3) New 200 1 b — d 1 3/15 1 16.5 N29 7718 (4) New 1300 2.5 l / l 1 3/11 12 16 9 2 b - i 17.7 Sll 7728 (3) New (100) (1.5) b — d 1 3/19 1

18.5 N16 7729(3) New 200 1 b — d 1 3/19 1

18.7 S30 7730(3) New (100) (1.5) b - d 1 3/20 1

19.3 N02 7731(3) New 100 1 b - d 1 3/20 1 19.7 N30 7733 New (100) (1) b — d 1 3/21 2 19.8 S18 7721(3) New (300) (1.5) i - d 1 3/13 1 20.0 SOI 7725 (3) New (100) (1) b - d 1 3/16 1 20.6 S10 7727 New 200 1.5 b A d 1 3/18 4

23.0 NO 5 7736 New (300) (3) b — Z 1 £ 3/27 22 24.4 N04 7734(3) New 100 1.5 b - d 1 3/24 1 26.0 N22 7732 New (400) (3) i — d 1 3/20 3 27.3 N21 7737 New 300 2.5 b - d 1 £ 3/27 24

27.5 S24 7743 (3) New (100) (1.5) b - d 1 3/30 ~1

28.3 N28 7738 New 200 2.5 b - d 1 £ 3/27 24

28.4 S07 7742 (3) New 100 1.5 b - d 1 3/28 ~1 29.9 S42 7744(3) New 100 2 b - d 1 3/30 1 30.1 N12 7735 7708 1300 3 l - Z 3 3/24 13 (121) (1) Z - d 30.1 N23 7739 7707 500 1.5 b - d 3 £ 3/27 >5

30.6 S16 7740 (3) New (200) (1) b — a 1 3/27 ~1

COMMERCE - STANDARDS - BOULDER

(1) Due to very poor weather conditions, no calcium spectro heliograms were secured at the

McMath-Hulbert Observatory on March 3, 4, 5, 6, 7, 8, 9, 14, 17, 23, 25, 26, and 29, 1965.

(2) Region 7704 is a new region, in the same position as the ephemeral plage 7666 of the

previous rotation.

(3) These small and ephemeral plages were seen for only one day.

(4) Region 7718 is new, near the position of 7677 of the previous rotation, but not the same.

MT. WILSON MAGNETIC CLASSIFICATIONS OF SUNSPOTS 11 b

MARCH 1965

MAR

1965

TIME MEAS.

UT LAT

MER

OIST TYPE No.

MAR

1965

TIME MEAS

UT LAT

MER

OIST TYPE No.

1 1940 S05 W04 a f 15898 16 1800 N30 W05 £f* 15903

2 No Spots 17 No Obs

3 1825 N 30 E28 af* 15900 18 1730 N28 W29 /3f* 15903

4 1800 N28 E14 a p* 15900 S12 E 24 /?*** 15904

5 1805 N 13 W06 ySf 15901 19 1830 N 30 W 33 /3f* 15903

N 29 E03 a p** 15900 20 No Obs.

6-7 No Obs. 21-22 No Spots

8 No Spots 23-25 No Obs.

9 No Obs. 26 1800 N 23 E08 ap* 15906

10 1855 N 20 W 38 a p* 15902 N 10 E 43 /3p 15905

N 18 W 37 P + 15900 27 No Obs

11-13 No Obs. 28 1715 Nil E 12 ap 15905

14 1910 N 31 E 20 /3f* 15903 29-30 No Spots

15 No Obs. 31 No Obs.

COMMERCE - ST4M0AHDS BOULOCH

* New Cycle ** Other small spots in group below threshold of measurement

*** Old Cycle; reversed polarities + Reversed polarities

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INTERVALS OF NO FLARE PATROL OBSERVATIONS

NOVEMBER 1964

HOUR-UT

10 I I 12 13 14 15 16 17 18 19 20 21 22 23 24

mi

STANOARDS

'bservatories included:

bast umani

rcetri

thenes

akou

ucharest

apetown

Capri-F (German)

Capri-S (Sweden)

Catania

Climax

Crimee

Haute-Provence

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Ucc le

Voroshilov

Zurich

DE

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1961

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IIIp INTERVALS OF NO FLARE PATROL OBSERVATIONS

DECEMBER 1964

HOUR-UT

COMMERCE - STANDARDS - BOULDER

Observatories included:

Abastumani Capetown Herstmonceux Kodaikanal Mi taka Siberie

Arcetr i Capri-F (German) Huancayo Locarno Nizamiah Sydney

Arosa Capri-S (Swedish) Ikomasan Lockheed Ondrejov Tachkent

Athenes Climax 1stanboul Lvov Ottawa Tortosa

Bakou Crimee Izmir an|( Manila Sacramento Peak Ucc le

Bucharest Haute-Provence Kanzelhohe McMath-Hulbert Salonique Voroshilov

Zurich

IONOSPHERIC EFFECTS OF SOLAR FLARES Illq

SHORT WAVE RADIO FADEOUTS SUDDEN COSMIC NOISE ABSORPTION

SUDDEN ENHANCEMENTS OF ATMOSPHERICS SOLAR NOISE BURSTS

SUDDEN PHASE ANOMALIES SUDDEN ENHANCEMENTS OF SIGNAL

SUDDEN FREQUENCY DEVIATIONS AT 18 Mc/s

FEBRUARY 1965

FEB

1965

UNIVERSAL TIME TYPE SWf IMP

IMPORTANCE

bur

WIDE SPREAD INDEX

STATIONS KNOWN

FLARE STAR! END MAX ABS SCNA SEA SPA SES SFO

U2 2032 2034 1 5 MC BO

02 2051 2053 1 5 BO MC 2043

r0 5 1757 1820 1812 36 1 BO C NS5 88K C-36tNPG-18) 1750 -05 1759 1801 1 5 MC BO -05 1802 1804 1 5 MC BO -05 18o8 1813 2 5 MC BO

-05 l a 14 1816 1 5 MC BO

Lob 1820 1825 1 1 BO

07 1821 1827 1822 6 1 B0(WWV10-0.6*WWV15-0.2 *

KKE4-0.2>KKE5-n.2)

14 1920 20o0 1950 30 1 BOINPG-30)

1-18 0510 0541 U517 25 2 1 DE ka 0510 U620 2 1 DE

COMMERCE - STANDARDS - BOULDER

Note: No SCNA, SEA, Burst report received from Hawaii.

Erra ta

In CRPL-F247, table Illh, on Jan 3 at 1011 UT the event was an importance 1, SCNA with 4% absorption, not an SWF

importance 4, and on Jan 4. 28 at 0215 UT the G-SWF was importance 1.

111 r RIOMETER EVENTS

FEBRUARY 1965

FROBISHER BAY 30 Mc/s

FEB

1965

START

UT

END

UT

MAX.

UT

MAX.

ABSORP.

db,

(tenths)

NO.

OF

PEAKS

FEB

1965

START

UT

END

UT

MAX.

UT

MAX

ABSORP.

db,

(tenths)

NO.

OF

PEAKS

1 * 16 0412 0548 0425 30 2

2 0353 0458 0359 3 1 17 ■jV

3 * 18 *

4 ** 19 **

5 ** 20 **

6 0040 2310 0123 29 6 21 -A--A-

7 0318 1438 0412 10 7 22 **

8 ** 23 irk

9 ** 24 0240 0302 0247 6 1

10 0130 0316 0152 15 6 25 *

11 ** 26 0250 0502 0316 35 4

12 * 27 **

13 * 28 0210 0346 0222 16 4

14 *

15 0110 0424 0139 25 3 15 16 10 1720 1650 6 1

COMMERCE - STANDARDS - BOULDER

No Event

No Data

SOLAR RADIO EMISSION IVa

OUTSTANDING O C CU R R K N CE S

MARCH 1965

ARO-OTTAWA 2800 Mc/s DR AO-PENTICTON 2700 Mc/s

MAR

1965

U R A N E

DESCRIPTIVE

TYPE

START

UT

DURATION

HRS MIN

MEAN

FLUX

MAXIMUM

REMARKS

TIME FLUX

6 3 Simple 3 1812 2 06 1.0 1911 2.0

7 1 Simple 1 1603 01.5 0.6 1603.8 1.2

4 Post Increase A 12.5 0.3 0.6

1 Simple 1 1607.5 01 0.7 1608 1.4

13 1 Simple 1 2050.5 01 0.6 2051 1.2

25 3 Simple 3A 2354 1 01 3.0 2412 4.0

1 Simple 1 2359 02 3.4 2400 6.4

1 Simple 1 2401.5 01 0.4 2402 0.8

COMMERCE - STANDARDS - BOULDER

HOURS OF OBSERVATION, JANUARY, FEBRUARY, MARCH, 1965

OBSERVING PERIOD:

January 13:25 - 23: 20 UT

February 13:00 - 24: 30 UT

March 12 :20 - 01; 25 UT

With the following excel ptions:

(1) Observations commenced: Jan. 24 at 13: : 45 UT

Feb. 13 at 13: : 45 UT

25 at 13 : 30 UT

Mar. 3 at 13: :05 UT

4 at 13 :20 UT

5 at 13 : 10 UT

8 at 13: : 10 UT

26 at 12 : 35 UT

(2) Daily interruption of ob iservations, approximately 20 minutes

in duration, for calibration purposes:

In the period 14:00 - 15:00 UT

IVb SOLAR RADIO EMISSION

OUTSTANDING OCCURRENCES

MARCH 1965

NBS BOULDER 108 Mc/s

March 1965

TYPE START UT

TIME OF MAXIMUM

UT

DURATION MINUTES

INTENSITY

19 7 1900 2353 356D 1

25 7 2353 0027 70D 1

25 3 2358 2359.8 2.9 2

NOMINAL TIMES OF OBSERVATION

MARCH 1965

NBS BOULDER 108 Mc/s

March 1965

HOURS OF OBSERVATION

U.T.

HOURS OF INTERFERENCE

U.T.

March 1965

HOURS OF OBSERVATION

U.T.

HOURS OF INTERFERENCE

U.T.

1 1339-0037 1339-1900 17 1314-0054 2 1337-0038 1701-1915 18 1312-0055 3 1336-0039 2001-2004 19 1311-0056 4 1334-0040 20 1309-0057 5 1333-0041

21 1307-0058 6 1331-0042 22 1306-1653; 7 1330-0043 1711-0059 8 1328-0044 23 1304-0100 9 1327-0045 24 1303-0101

10 1325-0046 25 1301-0102

11 1324-0047 26 1259-0103 12 1322-0049 27 1258-0104 13 1320-0050 28 1256-0105 14 1319-0051 1420-1426 29 1254-0106 15 1317-0052 1523-1529 30 1253-0107

16 1316-0053 31 1251-0108

COMMERCE STANOARDS BOULDER

SOLAR RADIO EMISSION

SPECTRAL OBSERVAT IONS IVc

MARCH 1965

High Altitude Observatory Boulder 7.6-41 Me/s

Date Mar

1965

Bursts

Frequency Bange (Me/s)

Date har

1965

Bursts

Frequency Range (Mc/s)

Type Time (U.T.) Inten¬ sity

Type Time (U.T.) Inten¬ sity

1 no observ. 1500-1700 12 III 2209:15-2209:30 1- 23-41 6 continuum 1813:15-1837 2 18-41 III 2336:45-2337:45 1+ 18-41

(f) 1843-1854 2 26-37 13 III 1549-1551 1+ 19-41 7 III 1610-1610:30 1 31-41 19 continuum 2035-2210 1- 20-41 8 no observ. 1640-1859 III 2254:45-2255 1- 21-41

Ill 1914:30-1915 2 19-41 III 2257:30-2257:45 1- 25-38 III 1915:30-1915:45 1- 19-41 20 III 1909-1909:15 1- 20-41

no observ. 2110-2255 III 1909:30-1909:45 1- 25-33 9 no observ. 2200-2330 III 2108-2108:15 1- 21-41

12 Ill 1714:30-1715 2 20-41 III 2108:30-2108:45 1- 21-34

III 1721-1721:30 2 18-41 22 no observ. 1500-1800 III 1830-1830:30 1 21-41 23 no observ. 1700-2000 III 2049:15-2050:30 1 18-41 29 no observ. 1700-2000 III 2050:45-2051:45 2 13-41 30 no observ. 1819-2400 III 2114-2115 3 12-41 31 no observ. 1625-1916,

2106-2315 f = amorphous structure COMCRCE - 8TAMOAA9S •OULOCJI

SO

LA

R

RA

DIO

EM

ISS

ION

SP

EC

TR

OH

EL

IOG

R A

MS

MA

RC

H

1965

5

SO

LA

R

RA

DIO

EM

ISS

ION

SP

EC

TR

OH

EL

IO G

RA

MS

IVe

£

SO

LA

R

RA

DIO

EM

ISS

ION

SP

EC

TR

OH

EL

IO G

RA

MS

M

AR

CH

1965

*/

5

SO

LA

R

RA

DIO

EM

ISS

ION

SP

EC

TR

OH

EL

IO G

RA

MS

5

SO

LA

R

RA

DIO

EM

ISS

ION

SP

EC

TR

OH

EL

IO G

RA

MS

s g

SO

LA

R

RA

DIO

EM

ISS

ION

SP

EC

TR

OH

EL

IO G

RA

MS

i

E

ON

IVi

Va COSMIC RAY INDICES

(Neutron Monitors)

FEBRUARY 1965

CHURCHILL CLIMAX DALLAS

FEB DAILY AVERAGE DAILY AVERAGE DAILY AVERAGE

19 Bb COUNTS PER HOUR COUNTS PER HOUR COUNTS PER HOUR

l 6597.6 3367.2 6618.8 2 6625.8 3360.1 6630.3 3 6617.0 3355.8 6629.7 4 6595.4 3348.7 6616.9 5 6574.7 3353.4 6614.5

6 6588.8 3376 .5 6629.8 (12) 7 6552.9 3386.0 6630.0 8 6513.5 3349.9(28) 6569.1(18) 9 6419.8 3297.8 6480.2

10 6465.7 3327.0 6532.1

11 6510.3 3340.0 6552.3 12 6530.5 3349.3 6580.9 13 6552.3 3337.8 6583.5 14 6551.3 3347.8 6594.0

15 6542.0 3348.7 6589.7

16 6563.4 3346.9 6580.1 17 6573.3 3340.2 6591.5 18 6579.0 3345.7 6615.1 19 6588.4 3352.2 6636.5 20 6589.2 3362.3 6646.1

21 6552.1 3352.0 6611.5 22 6562.2 3368.9 6622.6 23 6565.8 3374.8 6633.8 24 6552.1 3355.0 6595.5 25 6552.3 3343.3 6597.6

26 6556.8 3342.5 6597.4 27 6559.4 3352.0 6601.5 28 6555.7 3372.3 6616.6

COMMERCE - STANDARDS - BOULDER

( ) Number of hours for which data are available if less than 24 (or number of section hours if less than 40 for Climax).

Churchill Super Neutron Monitor, Scaling Factor 120.

Climax IGC Station B305, Scaling Factor 128.

Dallas Super Neutron Monitor, Scaling Factor 120.

CO

SM

IC

KA

Y

IND

ICE

S

Vb

H

s- 3 © =

© «=• o s- u c

U

s-

CO

MM

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CE

- S

TA

ND

AR

DS

- B

OU

LD

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Via GEOMAGNETIC ACTIVITY INDICES

FEBRUARY 1965

Feb. 1965

C

Values Kp

Surn Ap

Final

Selected

Days

Three hour Gr. interval

1 2 3 4 5678

1 0.1 3- 2o lo lo Oo Oo Oo 0+ 7o 4 Five

2 OoO 0+ 2- 1- Oo Oo 0+ 1- lo 5- 2 Quiet

3 0.3 lo 1+ lo 1- lo 0+ 1- 3o 9o 5 4 0.6 3o 2+ 2+ 3- 2o 2+ 3- 2- 19o 10 2

5 0.4 2- 1+ 1- lo 1+ 2- 2- 1+ 11- 5 12 13

6 1.1 3o 1+ 2- 0+ 3o 5- 3+ 2+ 20- 14 17 7 1.4 4- 5+ 6- 3+ 4o 4+ 3o 3- 32o 31 19 8 1.0 1+ 1- 1+ 2- 1- 2o 5o 5+ 18o 17

9 0.8 3- 2o lo 2+ 3o 3+ 2+ 2o 19- 10 10 0.7 2+ 3+ 3- 3+ 3- 2+ 2o 2+ 21o 12

11 0.6 2o 3- 4o lo 1+ 2o 3- 2o 18- 10 Five 12 0.1 2o 1+ lo 2- lo 0+ 0+ Oo 8- 4 Disturbed

13 0.4 1- Oo 1+ lo 1- 1+ 2- 2- 8+ 4 14 0.8 2- 3- 3+ 4- 2+ 1+ 3- 2o 20- 11 7 15 0.9 3o 2o lo 2- 3o 4o 2- 3o 19+ 12 8

21 16 0.2 2+ 3o lo 2- 1+ 1+ 1- 1+ 13- 6 23 IT 0.0 2- Oo Oo lo 2- Oo Oo 1- 5o 2 25 18 0.4 Oo Oo Oo 0+ 1+ lo lo 3o 7- 4 19 0.2 0+ 2- 0+ 1- lo 1- 1- 2o 7+ 4 20 0.3 2- lo 1+ lo 1+ 2o lo 2- llo 5

21 0.9 2+ 5- 2+ 3+ 3+ 3+ 3o 3- 25o 17 Ten 22 0.1 2o 1- lo 1- 1- 1- 2- 2+ 10- 5 Quiet

23 1.1 2o 2- 2- 3- 3+ 4+ 5- 4- 24o 18 24 0.7 3o 3o 2o 3- 2o 1+ 2- 3+ 19o 11 1 25 0.8 5o 2+ 2+ 3- 2- 1+ lo 3o 19+ 14 2

26 0.5 2o 2o 3- 2- 2- 2+ 2- 1+ 15+ 7 5 27 0.6 2+ 1+ lo 3- 3o 3- lo 3- 17- 9 12 28 0.3 3- 2o 1- 1+ 1+ 2o 2o 1+ 13+ 6 13

17 18 19 22

Mean: 0.55 Mean: 9

COMMERCE STANDARDS BOULDER

DA

YS

IN

SO

LA

R

RO

TA

TIO

N

INT

ER

VA

L

Kp

till

19

65 F

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j.b.

Vila CRPL RADIO PROPAGATION QUALITY FIGURES AND FORECASTS

NORTH ATLANTIC, NORTH PACIFIC FEBRUARY 1965

FEB-

WHOLE DAY

INDICES

ADVANCE

FORECASTS

(Jc —

REPORTS)

FOR

NORTH ATLANTIC NORTH PACIFIC GEOMAGNETIC INDICES

6 - HOURLY

QUALITY FIGURES

SHORT-TERM FORECASTS

ISSUED ABOUT ONE

HOUR IN ADVANCE OF:

8 - HOURLY

QUALITY FIGURES

A FR ,,a A si A si

1965 NORTH NORTH AVERAGE WHOLE

00 06 12 18 03 II 19 HALF DAT HALF DAT

HIGH TO TO TO TO 00 06 12 18 TO TO TO ATLANTIC PACIFIC LATITUDE

DAT 06 12 18 24 1 1 19 03 (1) (2) (1) (2)

l 6+ 6 6 6 6- 6- 7- 7- 6 6 7 7 6 6 7 2 0 4 3 i 0 2 2 6+ 6 6 6 6- 6- 7- 7- 6 6 7 7 5 6 7 1 1 2 3 0 0 0 3 6+ 6 6 6 6o 6- 7- 7- 6 6 7 7 6 5 7 1 1 4 3 0 0 1 4 6+ 6 6 6 6+ 5+ 7- 7o 6 6 7 7 6 5 7 3 2 9 5 2 1 5 5 6+ 6 6 6 6o 5o 7o 7- 6 5 7 7 6 5 7 1 1 3 3 0 0 1

6 6+ 6 6 6 6+ 5+ 7- 7- 6 5 7 5 7 5 7 2 3 12 3 1 2 8 7 5o (4) 5 6 6o 4- 6o 5o 5 4 6 6 5 5 4 (4) 3 23 4 (5) 3 55 8 5+ (4) 5 6 5- 4+ 6+ 6o 5 3 6 6 5 4 5 1 3 10 7 1 2 4 9 6o 5 6 6 6o 5+ 7- 6+ 5 4 7 7 5 4 6 2 3 8 11 1 2 7

10 6+ 5 6 6 6+ 6- 7- 6+ 6 5 7 6 5 6 6 3 2 9 5 3 1 10

11 6o 5 6 6 6o 5o 7- 6o 6 6 7 7 4 4 6 2 2 8 7 2 2 9 12 6o 5 6 6 6o 5+ 7- 7- 6 6 7 6 6 5 6 2 0 3 5 1 0 3 13 6o 6 6 6 6o 5+ 7- 7- 6 6 7 7 5 6 6 1 1 2 5 1 1 3 14 6+ 6 6 6 6+ 6- 6+ 7- 6 6 7 6 6 6 6 2 2 8 5 3 2 13 15 6+ 5 6 6 6+ 6- 7- 7- 6 5 7 6 6 5 5 2 3 9 3 1 3 10

16 6+ 6 6 6 6o 6- 7- 7- 6 6 7 7 6 6 6 2 1 5 4 2 1 5 17 6+ 6 6 6 6+ 5+ 7- 6+ 6 6 7 7 6 6 6 1 1 3 6 0 1 2 18 6+ 6 6 6 6o 6- 7- 7- 6 6 7 7 7 6 7 O 1 2 7 O 1 1 19 6+ 6 6 6 6o 6- 7- 7- 6 5 7 7 6 5 6 1 1 2 5 0 1 2 20 6+ 6 6 6 6- 6- 7- 7- 6 6 7 7 7 6 6 1 1 4 3 1 1 5

21 6- 6 6 6 5+ 5+ 7- 6+ 6 5 7 7 7 6 6 3 2 13 3 2 2 13 22 6+ 5 6 6 6- 6- 7- 7- 6 5 7 7 5 5 5 1 1 3 3 1 1 3 23 6o 5 6 6 6- 6- 7- 7- 6 6 7 6 7 5 5 2 3 13 4 1 3 12 24 6o 5 6 6 6- 6- 7- 7- 5 5 7 7 7 4 5 3 2 10 4 2 2 7 25 6o 5 6 6 6o 5o 7- 7- 6 5 7 7 5 5 5 2 1 8 5 2 1 8

26 6o 6 6 6 6o 5- 7- 7- 6 5 7 7 7 5 5 2 2 7 5 2 1 9 27 6o 6 6 6 6- 5+ 7- 7- 6 5 7 7 7 6 6 2 2 8 3 2 2 9 28 6o 6 6 7 6- 6- 7- 6+ 6 5 7 7 7 6 7 1 1 5 3 1 1 4

SCORES QUIET PERIODS : P 25 24 14 27 17

s 3 4 12 1 10 u 0 O 0 O 1 F 0 0 0 O 0

DISTRUBED PERIODS: P 0 0 1 O 0

s 0 0 1 0 0 u 0 0 0 0 0 F 0 O 0 0 0

COIOCRCE - STANDARDS - BOULDER

NOTES;

1. The advance Jc-forecasts are scored against the average high latitude whole day indices.

2. The observed indices for the North Pacific are low weight because of insufficient data available for their preparation.

3. The predicted Apr indices are issued each Wednesday for the coming seven days. The value for the first day of each prediction period is underscored.

QU

AL

ITY

QU

AL

ITY

QU

AL

ITY

CRPL RADIO PROPAGATION QUALITY FIGURES AND FORECASTS

NORTH ATLANTIC

FEBRUARY 1965

— Short-term forecast I Range of reports

o Quality figure n«Y

OUTCOME OF ADVANCE FORECASTS-- FINAL ESTIMATES ( I TO 7 DAYS AHEAD)

HIGH LATITUDE

ACTUAL

COMPARISON (SEE TEXT)

0 10 20 28

Vllb

COMMERCE STANDARDS BOULDER

Vile USEFUL FREQUENCY RANGES -- NORTH ATLANTIC PATH

FEBRUARY

C^UT 3 6 9 12 15 18 21 24

1965

COMMERCE STANDARDS BOULDER

USEFUL FREQUENCY RANGES ~ NORTH ATLANTIC PATH VI Id

FEBRUARY 1965

OhUT 3 6 9 12 15 18 21 24 C^UT 3 6 9 12 15 18 21 24

Adapted from Observations by Deutsches Bundespost

Villa IQSY ALERT PERIODS

INTE R NAT IONAL U RSIGR AM

AND WORLD DAYS SERVICE

MARCH 1965

MAR TIME

ADVANCE GEOPHYSICAL ALERT

WORLDWIDE GEOPHYSICAL ALERT

1965 OF ISSUE

UT NO. TYPE TIMING ELABORATION

11* 0400 165 Magnetic Calm Exists

12 0400 166 -4-Strat Warming Begins Ukraine moving southern Ural

Mountains moderate

13 0400 167 Strat Warming

Solar Activity

Exists

Exists

Sverlovsk region moving

northeast moderate

New region born

14 0400 168 Solar Activity

Strat Warming

Exists

Exists Siberia moving northeastward

moderate intensity increasing

15 0400 169 Solar Activity

Strat Warming

Exists

Exists North Central Siberia moving

northeastward strong intensity

increasing

16 0400 170 Solar Activity

Strat Warming

Exists

Exists

Cosmic event Polcap Absorption

North Central Siberia moving

Poleward intense

17 040 171 Strat Warming Exists North Central Siberia 73°

north latitude 140° east long¬

itude moving northeastward

intense

18 0400 172 Strat Warming Exists North of Wrangel Island 76°

north latitude 179° west

longitude moving eastward

intense

19 0400 173 Strat Warming Exists North of Bering Strait 78°

north latitude 170° west long¬

itude moving Northern Canada

intense

20 0400 174 Strat Warming Exists North of Alaska 76° north

latitude 160° west longitude

slowly moving Northern Canada

21 0400 175 Strat Warming Exists North of Eastern Siberia slow¬

ly moving north-northeastward

strong decreasing

22 0400 176 Strat Warming Exists North of Eastern Siberia

slowly moving northward

moderate decreasing

23 0400 177 Strat Warming Exists Polar region moderate

24 0400 178 Strat Warming Exists Polar region moderate

25 0400 179 Strat Warming

Strat Warming

Ends

Begins

Polar region

Prince Albert Canada moderate

increasing moving north

25 1410 Ottawa, Solar Flare 25/1325Z

26** 0400 180 Strat Warming Exists Calgary Canada moving Vancouver Island intense

27 0400 181 Solar Activity

Strat Warming

Exists

Exists

Flares

Vancouver Island moving west¬

ward moderate weakening

28 0400 182 Solar Activity Exists Due west of State of Oregon

moving westward moderate

decreasing intensity

29 0400 183 Solar Activity

Strat Warming

Exists

Ends

31 0400 184 Strat Warming Begins In Greenland moving north-

northeast moderate

CCTiaCHCt 3TUOMOS KUDO)

* February 5-9, 1965 has been designated as a Interplanet Riometer Retrospective World

Interval. This information was sent with March 11, 1965 Geophysical Alert.

** The following dates were designated as Riometer 1964 Retrospective World Intervals:

3-4 January, 4-5 March, and 6-9 September. This information was sent on March 26, 1965.

+ Strat=Stratospherlc

USC0MM-N8S-E