176 MONTHLY WEATHER REVIEW JUNE 1933

TABLE3.-h'olar-radiatian measurements, and delerminalions of POSITIONS AND AREAS OF SUN SPOTS-Continued atmospheric turbidity factor, 8, Washington, D.C., June 1933 __ [Values in italics have been interpolated] Heliographic Total - - Eastern area Date standard for civil timt Diff. Longi- Lati- A tmos Spot Orou] each pheric long. I1tude tude day Solar dust Totes: Iskv- Air -~~ Date and sol81 alti- parti- mas I" I. I. B hour angle tude, m. des pel lY33 h. cubic hm centi- (N~rval0bservat.ory) ..... 10 26 ...... meter [Mount U'ilson)...... 9 5 ...... - - (Naval Observatory).... 11 50 ...... -55.0 32.5 f4.0 .-.. 32 ;z Junr 7 -43.0 33.3 +4.0 ..... 1 I gr. ml r.cnl. r. ea1 -.. -3.0 as.: f4.0 ..... 92 !X? 5:07a...... 24-02 2.45 0. fi73 1.551 1.442 0.190 1 hh -14.0 35, f4.0 ..... I3 1.9 4:578-...... 25-55: 2. 28 .74s .5Q8 .bG .145 P=36. SY" -1. 0 36.4 +s. 5 ..... 112 112 4:Ma. - ___ .___.25-26 1. il .859 .640 .671 ,195 +13.lJ 36. 6 +5. 0 56 ...... 56 4:01a- .______3&44 1.6i .E85 .e:; .53? .1Y5 f2i. I) 36. 2 +s. 0 43 .... 43 3:lSa- ______45-12 1.41 .968 .717 .5iO . 155 [Naval Observatory) .... 11 9 +40.II 36. 7 +:. 0 46 ..... 46 3:12a ______45-56 1.39 ,991 .718 ,676 .190 (Naral Ohserratory).... 11 7 +53. n 36.5 +tl. o 16 ...... 46 (Naval Observatory).... 13 10 +6i.O 36.2 +6.0 53 ...... 53 (Naval Observatoryr .... 13 58 +8l. 0 36.5 +KO 53 ...... 53 (Naval 0hservatorj.r .... 11 50 ...... _.._ 5:59a. - ______14-30 3.94 .016 .709 ,697 ,065 296 (Naval Ohserratory) .... 10 33 ...... __.. 5:55a.. ______1514 3. 77 .942 .!I4 .600 ,060 (Mount Wilson) ...... 10 0 ...... -.. 5:33a. - .______15-?3 2. w 1.038 ,176 ,836 ,060 (Perkins Ohservatorv.. 15 0 ...... _._ 5:27a. -.______2&30 2.84 1.047 .779 .6b1 ,060 (Naval Observatory; .... 14 20 ...... __.. 5:15a ...... 22-50 2.57 1.153 .BO .668 ,045 June ?S (Naval Vbservatory) .... 10 44 ...... 5:09a...... 33-58 2. 46 1.170 .896 .662 .045 (Perkins Observatory). . 1.1 15 ...... 4:50a...... 27-34 2. 15 1.162 .bY9 .679 .070 (Perkins Observatory). . 12 45 ...... 4:44a...... 3-12 2.08 1.213 .as3 ,884 .of30 hlean daily area for June...... I ...... I ...... -. . - - - - -. 26 Junr 16 5:66a- - ______1E-47 3. 79 .853 .io3 .606 ,050 54s The Perkins Ohserratory report for hias. received too Iato for inclusion in the last 5:52a. ______- 15-52 3.63 .910 .709 .5m ,038 issue. indicates that there were no spots on May 4, S, 10, 11, 25, .md 30 The niean daily 5:ma. __------20-22 2. s5 1. W6 .776 .634 .080 area for May shnuld therefore be changed to I?. 5258. ______2c-58 3. 7s 1. OlY .779 .638 . opo 5:218. ______.21-43 2. 69 1.031 .803 .849 ,085 5:16a ...... 22-39 2.59 1.031 .a09 .652 .090 PROVISIONAL SUN-SPOT RELATIVE NUMBERS 4:54a. - __..__ - 26-52 5.20 1.093 .85b .676 ,160 FOR JUNE 1933 4:48a- - ___ __ .-- 38-02 -. 12 1.119 ,856: .677 .170 4:44a...... 26-43 2.07 1.125 ,846 ,696 . 175 4:39a...... 28-43 3.01 1.125 . 6,$9 ,688 .180 (Dependent alone on observations at Zurich and its station at Arosa) ~ - ~ ~ - [Data furnished through the courtesy of Prof. W. Brunner, Eidgen-Sternwarte, Zurich, Switzerland] POSITIONS AND AREAS OF SUN SPOTS

[Communicated by ('apt. J. F. llcllaeg. duperintcndent Vnited State!; Ndvnl t.ll.;crva- June1933 ~ ~~~~~ June 1933 n",::gZ June 1933 :gtg tory. nata filrnished hy Xav:il Otisrrvutor?, in cooprration with IIarvtlrd. Perliiiis. 11 1 11 1 and hfnunr Wilson ohservntorioc. 'l'hc dillcrenres of loneit title tire iirrasure~lfroni -~ central meridian. positive west. The north latit.udes are plus. Areas are corrected for foreshortening ant1 are expressed in millionths of sun's visitde h~misphrre. The total area, including spnts and groups, is given fnr cadi day in the last colnmn] __ He1 iograp h ic Area Total Eastern area Date I tan~lard I fur timt each Spot Oroii dny -1-1- -1-1- -- 1933 h in 11 $0 ...... _._ 11 10 6 ...... 6 10 1 6 ...... 6 I I June i (Naval Obcvrvatory) . 14 , A ...... tj Jun~S (Naval Ohservatory) . 13 24 6 ...... fi hlean: 29 days=5.0. (Naval Observatory) . IO 39 3 ...... 3 (Naval Ohservatoryi... 10 41 No spots ...... c=Nea formation of a ceuter of activity. E, on the esstern part of the sunk dkk, (N:Iv~Ohscrvatory) ... 11 3 No spnts ...... W, on the wwtern part, M, in the central zone AEROLOGICAL OBSERVATIONS

[Aerological Division, 14' R (treer, in charge] By L. T. S~MUELB Free-air tempera tures during June were mostly above close to normrtl and the resultant velocities above norninl normal with the lnrgest departures occurring nt over the northern stations and below normal over the and Omaha. (See table 1.) Free-air relative humidities southern stations. (See table 2.) At 4,000 meters the averaged below normal at practically all stations and resultant winds were more southerly than normal at sev- levels. eral far western and southern stations. Resultant At 1,000 meters above sea level the resultant wind clirec- velocities were mostly above normal over the northern tions over the country east of the Rockies were in general sections of the country and below normal over the South.

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