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8 ., ; ;. , JANUARY,1916 MONTHLY WEATH,ER.. <','- REVIEW. -i 1 " 9 ..i ....i TABLE3.nohr radiation in.tensities ut Liiwh, Nebr. (State Uni- SOL-& RADIATION MEASUREMENTS AT BUDISON, versity furrn)-Continued. WIS., 1913-1016. [Grmealories per minute per square centlmeter of normal surfwe.] 15)' HERBEH'I' H. KIMBALL.Professor of Meteorologv, and ERICR. -- -_ . .- MILLER,Local Forecaster. Suds zenith distance. [Dated: Wnshington, D. C'., Feb. 15,1916.1 0.0' 148.3' 160.0° 166.5' 170.7' I73.0' 175.7" 17.4' I Xi" 179.S' I 80.7' The radiation measurements summarized in Table 3 Date. below nre in continuation of those for the period July, Air ms. 1910, to June, 1912, inclusive, published in t,he Bulletin - I of tlic Mount Weather Observatory, 1912? 5 : 177-181. 1.0 1.5 2.0 2.5 4.0 Thse hitter are included on the monthly nieans of --- - . ._ Talde 3, which are the arithmeticd means of all the 1915. Gr.- Or.- Or.- Or.- Or.- A. or P. AX. published measurements at the respective P. Y. eel. cd. cat. cl. tal. ax. Sept. 16 ....... ................. 0.97 0.87 .._._n. 71; air nizisses for iiiontlis of the same name. 1s.. ..... 1.43 1.33 1.24 1. 15 1.07 1.W (1. 94 19.. ..... ...... 1.10 ..... 0 .s4 0.75 0. I:i .... Tho ix(mis liere given arc gcnsrlly lower than those 3....... ....... 1.40 1.32 1.24 ........... .... suninimim:l in the 12iilletin above referred to, p. 182, 21.. -.-. 1.80 1.2s 1.17 i.ns 1) q9 n. D? 22. ...... ...... 1.3 1.13 1.01 I). 91 I 0: sa n. 71; Table 3, aiicl especial!p duiinp t,he early months of tho 27.. ..... l.2G 1.15 1.05 n. 97 t 0.91 0. s4 29.. ..... .......::::::I 1.27 1.13 .... .... year. Tliia is no tlouht clua in part to the innrked de- ......I..... pression in radiation int.ensities dr:ring the latter part of Means.. ..... 1.31 1.27 1.15 1.06 0.93 ' 0 88 0.83 i !. 1913 and iiinst of 1913, following the eru Ition of hutmai A. ?A. ! Oct. 2 ....... _.___1.22 i.in ._........ ,! ..... .... volcano in Alaskn in June, 1013.1 TTn aoubtedly, how- 5. ...... ..... 1.4.1 l.3? 1.21 ......! 1.02 .... ever, tlie oc.crt.iions are ram wlieii such high vdues as I ....... ................ .... 1.25 ' 1.16 1. 111 s ....... ..___1.51 1.44 1.37 1.3:) : 1.23 1.15 those of the early months of 1911 aiid 1913 will he meas- 9.. ..... ........... 1.36 1.2s 1.10 , 1.12 1.06 10.. ..... ..... 1.Bi 1.32 ..-. 1.13 1.____ .... ured at Mlndison, since t,he atmosphere at that place is 13.. ..... ..... 1.34 1.32 1.18 ......I n.w n. sn n.es ............. apt to be more or less smokj-, especially during the 17.. ..... _.__.1.3 1.27 1.19 1.13 j 1.07 1.00 0.N ............ !:::::. IS.. ..... ............ 1.27 1.19 ...... ' 1.06 .... ...... 0.iP ......~ ...... winter moil tlis. 21.. ..... ..... 1.9 1.21 1.14 n. 93 n.ss ...... ......'...... 22.. ..... ..... 1. 51:I 1. 25 1.14 11. s: 0. $0 ........... .: ...... 21.. ..... ____.1.37 1.30 1.22 1.02 0.94 n.87 ...... j ...... Tnnm l.--Pon~p~~risrmqf rrtdiatioii. .intensities mtwsurrd ut d[ferent 27.. ..... ..... 1.35 ..... .... ........... .... .................. I ...... slaliortr with c.rccp&ionullyelmr skies. 29. ...... ..... 1.43 1.3s 1. 2i 1.13 I 1.00 0.94 n.si n.ig ...... I ...... Meaus.. ..... ____.1.36 1.U 1.23 1.16 i 1.08 om 0.91 0.78 ............ [Gram-calories per minute per square centimeter of normal surface.] P. Y. ~~ Oct. 2 ....... ........... 1.11 1.03 0.94 I..... _._. _____.0.04 0.13) Air mass. 3.. ..... ................. .... ....... l.M 1.01 0.97 0.92 ............ I 5.. ..... ...... 1.44 1.35 1.27 1.19 I 1.12 1.05 n.99 c.9~ILS~ .__._. Station. Date. 8. 1.51 1.43 1.54 1.28 1.21 1.16 1.11 ...... ...... 1.06 1.02'._.._ 3.5 4.0 9.. ..... ..___.1.P6 1.26 .._............ , .... ..................!: ..... 3.0 1 I 13.. ..... ...... 1.34 ..... 1.15 1.0s 1.01 0.96 0.90 n.u __.___i .._.._ ........ __....... .... ...... 17.. ..... ........... 1.B .... ........... .... ........... ......,...... 21.. ..... ............ 1.21 1.13 1.04 I 0.99 0.92 0. s.5 0.91 ..... .: Gr.- I-LI-Gi- Z!....... ........... 1.21 1.13 1.04 10.9s 0.93 0.88 0.u ......I :::::: I mi. I cui. I ai. 26. ...... ........... 1.22 1. a3 ............. .... ........................ Yadlson.Wis.......... Sept. 4,1914 ........... 1.0s I. .... .I.. .... 2;. ...... ........... 1.24 1.10 ............ .... .....I...... ...... ! ...... Mount Weather, \'a ... .I Sept. 28,1914 .......... 1.20 I 3....... ........... 1.29 1. P 1. 14 ~ 1.01 1.90 3bdlson Wis. ....... ........ ..... 1.47 Meslm.. ..... ..... 1.41 1.25 1. i5 1.10 i 1.08 1.00 Warhh&on, D. C.. ... A. Y. i Xadison. Wia. ........ I 1.45 1.40 I 1.32 1.X NUV. 1........ i ................. .... ..... 1. nl 0. 91.; .!1.50 11.88 1.32 8 ........ 1 ............ 1.39 1.35 1.26 1. 19 1.12 ... ... 1.43 1.35 1.30 ................. I.--.-. 12 ........I ............ 1.40 1. 'sn 1. 1.1 ..... 1. (If ........... ......I...... I 14 ........ 1 ............ 1.54 1.45 1. :{!I 1.2.t 1.11 i.ni ................... 21 ....... -1.. ............... 1.47 1.41 1.34 1.2s 1. 22 ............. 33.. ....................... 1.43 1.33 1.31 1. lfi 1.m i.n? _.__._!~~~~~~ On December 30, 1914, and December 28, 1915, the 29 ........ ~ ................. 1.45 1.36 1.30 1.22 1.li 1.12 _____.!:::::: highest Deceniber rudistion intensiticv of record at Mad- Meaus ........ i ............ 1.44 1.41 1.31 1.22 1.13 I ison were obtained, and on September 4, 1914, the high- P. M. I est Septernlm intensities. It is of interest to compare NOV. 1..................... 1.30 1.3 1.11 1.0 0.91 11.. ......I-. .......... 1. .I2 1. :;6 1.23 1.1s 1.13 these with intensities at other stations at about the same 12 .................... 1.37 1.29 1. ?2 1.14 .._. 19 .................... 1.43 1.3 1.30 1..J .... time, as has been done in Ttible 1. The int.ensities meas- 21 .................... 1.5? 1.44 1.3: 1. :m 1.3 urecl at Mount \Veat,lier, Va., on September 28, 1914, are 28 .................... 1.m 1.29 1.16 1.07 1.01 8 .................... 1.49 .... ..... ..... .... the highest September intensities ever measured at the 29 .................... 1.54 1.45 1.37 1.31 1.2: station. Likewise, those for Wnshington on Deceniber Means.. .................. 1.45 1.31 1.25 1.1s 1.11 26, 1914, are the highest intensities for corresponding air ninsses measured at Washington in any month. This is Dec.AiM: _.___1 ___.__i ______ i 1.80 1. ??. 1.1.1 1. [YJ 1.03 also true of the measurements at Lincoln, Nebr., on De 8 .................... 1.41 .... 1.29 1.21 .__...._.! ............ ! ...... .I 1J ......................... 1.36 ..... ..... .... ..... I cernber 28, 1915, while those ohtnined at Ssnta Fe on 17 .................... 1.3s 1.31 1.3 1.17 1.10 1.E 1:::::: ::::::;:::::: 20. ........................ 1.42 1.34 1.24 1.13 0.99 ................... December 24, 1915, are the highest December radiation 31.. ....................... 1.36 1.32 1.24 1.12 .....I ...... 2s.. ....................... 1.54 1.41 1.22 .... 1.17 :::::: i :::::: intensities yet measured at that station. I..... .. Marvin pyrheliometer No. 5. of the spiral-ribbon Means.. .................. 1.38 1.86 1.89 1.20 1.09 1.02 I............ I type, which became tlie station instrument at Madison P. u. I nec. 3 ........I ...... I ...... I ...... 1.30 1. ?S ' 1.17 '1.11 on November 34, 1911, has been in continuous use since 4 .......................... 1.21 1. io I 1. nz 0. I that dnte. It was reconipared with Smitshsonisn silver- 8. ......................... 1.35 .....I ...... .... 17 .......................... .... 1.5 I 1.10 .... disk pyrlinliometer No. 1 during March and April, 1912, 21. ......................... 1.35 1.3 i 1.24 1.19 28.. ........................ .... ..... 1.3s 1.3'3 .... and ngsiii in March, 1915. The results are given below in Means.. .................. 1.30 1.14 1.16 i(1. 10$0.86)/(0.D8) 1 Ste Bulletin of the Mount Weather Observatory, 1914,6 :208, figure 1, lor a graphia I-----'- - presentstion of thfs depression. Unauthenticated | Downloaded 09/28/21 09:00 AM UTC JANUARY,1916. MONTHLY WEATHER REVIEW. 9 able 2, and do not indicate any change in tlie constants TABLE3.40lar radiation intensities at ilfdson, wis., 1915 to 1915, of the instrument. .inclwive-Continued. [Oram-calariaper minute per square centimeter of normal surface.] TABLE2.-Cmparison oj pyrheliometers ot Mudison, JVix -- Son's zenith distance. Smith- Ratio: Data. ' .................. .- , No. 1. 0.0' 1 48.3' 160.0' 166.5" 1 70.7' I 73.6' 1 78.7" 117.4' I 78.7O I 79.8*I80.7' I- I- I_--/_____ 1911. i Gr.4a7. / G~.-MI. i Air mpys. Nov. U.. ...................................... 1.369 1.361 I n. 994 24 ........................................ I 1.3iSI 1.350; 1.001 __. .- I 1.0 1.5 2.0 2.5 3.0 3.5 4.0 1912. I 1 I 1 yIu.28 ........................................ I 1.3fi11 1.349; 0.991 -_-I_ _- - -I-I- 29 ........................................I 1.w 1.509 ' 1.019 29 .......................................