ARTICLEhttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0048_cipocs_2_0_co_2.xmlChart IV. Percentage of Clear Sky Between Sunrise and Sunset, April 19402020-10-17https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0048_cipocs_2_0_co_2.pdf2020-10-17Chart IV. Percentage of Clear Sky Between Sunrise and Sunset, April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0054_cximic_2_0_co_2.xmlChart X. Isobars (mb) Isotherms (°C.) and Resultant Winds for 5,000 Meters (m.s.l.) April 19402020-10-17https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0054_cximic_2_0_co_2.pdf2020-10-17Chart X. Isobars (mb) Isotherms (°C.) and Resultant Winds for 5,000 Meters (m.s.l.) April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0055_cximic_2_0_co_2.xmlChart XI. Isobars (mb) Isotherms (°C.) and Resultant Winds for 10,000 Meters (m.s.l) April 19402020-10-17https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0055_cximic_2_0_co_2.pdf2020-10-17Chart XI. Isobars (mb) Isotherms (°C.) and Resultant Winds for 10,000 Meters (m.s.l) April 1940https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_135.xmlFog: Its Causes and Forecasting with Special Reference to Eastern and Southern United States (I)2020-12-13https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_135.pdf2020-11-29Fog: Its Causes and Forecasting with Special Reference to Eastern and Southern United States (I)https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0046_citoco_2_0_co_2.xmlChart II. Tracks of Centers of Anticyclones, April 1940. (Inset) Departure of Monthly Mean Pressure from Normal2020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0046_citoco_2_0_co_2.pdf2020-10-17Chart II. Tracks of Centers of Anticyclones, April 1940. (Inset) Departure of Monthly Mean Pressure from Normalhttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0056_cxmica_2_0_co_2.xmlChart XII. Mean Isentropic Chart, April 1940 (Potential Temperature 304° A)2020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0056_cxmica_2_0_co_2.pdf2020-10-17Chart XII. Mean Isentropic Chart, April 1940 (Potential Temperature 304° A)https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0053_ciimic_2_0_co_2.xmlChart IX. Isobars (mb) Isotherms (°C.) and Resultant Winds for 3,000 Meters (m.s.l.) April 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0053_ciimic_2_0_co_2.pdf2020-10-17Chart IX. Isobars (mb) Isotherms (°C.) and Resultant Winds for 3,000 Meters (m.s.l.) April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0045_cidfot_2_0_co_2.xmlChart I. Depature (°F.) of the Mean Temperature from the Normal, and Wind Roses for Selected Stations, April 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0045_cidfot_2_0_co_2.pdf2020-10-17Chart I. Depature (°F.) of the Mean Temperature from the Normal, and Wind Roses for Selected Stations, April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0057_cxmtda_2_0_co_2.xmlChart XIII. Mean Tropopause Data, Altitude (km.) (m.s.l.) Temperature (°C.) April 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0057_cxmtda_2_0_co_2.pdf2020-10-17Chart XIII. Mean Tropopause Data, Altitude (km.) (m.s.l.) Temperature (°C.) April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0104_psrnfa_2_0_co_2.xmlPROVISIONAL SUNSPOT RELATIVE NUMBERS FOR APRIL 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0104_psrnfa_2_0_co_2.pdf2020-10-17PROVISIONAL SUNSPOT RELATIVE NUMBERS FOR APRIL 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0102_paaoss_2_0_co_2.xmlPOSITIONS AND AREAS OF SUN SPOTS2020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0102_paaoss_2_0_co_2.pdf2020-10-17POSITIONS AND AREAS OF SUN SPOTShttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0111_fitsas_2_0_co_2.xmlFLOODS IN THE SACRAMENTO AND SAN JOAQUIN VALLEYS MARCH 29–APRIL 6, 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0111_fitsas_2_0_co_2.pdf2020-10-17FLOODS IN THE SACRAMENTO AND SAN JOAQUIN VALLEYS MARCH 29–APRIL 6, 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0052_cvimfm_2_0_co_2.xmlChart VIII. Isobars (mb) for 1, 524 Meters (5,000 ft.) and Isotherms (°C.) and Resultant Winds for 1,500 Meters (m.s.l) April 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0052_cvimfm_2_0_co_2.pdf2020-10-17Chart VIII. Isobars (mb) for 1, 524 Meters (5,000 ft.) and Isotherms (°C.) and Resultant Winds for 1,500 Meters (m.s.l) April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0099_aitnho_2_0_co_2.xmlADVANTAGES IN THE NONUNIFORM HOUR OF OBSERVATION IN THE INTERPRETATION OF PUBLISHED PRECIPITATION DATA2020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0099_aitnho_2_0_co_2.pdf2020-10-17ADVANTAGES IN THE NONUNIFORM HOUR OF OBSERVATION IN THE INTERPRETATION OF PUBLISHED PRECIPITATION DATAhttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0050_cviasl_2_0_co_2.xmlChart VI. Isobars at Sea Level and Isotherms at Surface; Prevailing Winds, April 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0050_cviasl_2_0_co_2.pdf2020-10-17Chart VI. Isobars at Sea Level and Isotherms at Surface; Prevailing Winds, April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0114_naoa_2_0_co_2.xmlNORTH ATLANTIC OCEAN, APRIL 19402020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0114_naoa_2_0_co_2.pdf2020-10-17NORTH ATLANTIC OCEAN, APRIL 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0049_cvtpia_2_0_co_2.xmlChart V. Total Precipitation, Inches, April 1940. (Inset) Departure of Precipitation from Normal2020-12-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0049_cvtpia_2_0_co_2.pdf2020-10-17Chart V. Total Precipitation, Inches, April 1940. (Inset) Departure of Precipitation from Normalhttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0105_ao_2_0_co_2.xmlAEROLOGICAL OBSERVATIONS2020-12-16https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0105_ao_2_0_co_2.pdf2020-10-17AEROLOGICAL OBSERVATIONShttps://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_164.xmlFrom the Seminars2020-12-27https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_164.pdf2020-11-29From the Seminarshttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0115_ogasa_2_0_co_2.xmlOCEAN GALES AND STORMS, APRIL 19402020-12-29https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0115_ogasa_2_0_co_2.pdf2020-10-17OCEAN GALES AND STORMS, APRIL 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0047_citoco_2_0_co_2.xmlChart III. Tracks of Centers of Cyclones, April 1940. (Inset) Change in Mean Pressure from Preceding Month2020-12-29https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0047_citoco_2_0_co_2.pdf2020-10-17Chart III. Tracks of Centers of Cyclones, April 1940. (Inset) Change in Mean Pressure from Preceding Monthhttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0101_sroa_2_0_co_2.xmlSOLAR RADIATION OBSERVATIONS, APRIL 19402020-12-30https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0101_sroa_2_0_co_2.pdf2020-10-17SOLAR RADIATION OBSERVATIONS, APRIL 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0051_cvtsia_2_0_co_2.xmlChart VII. Total Snowfall, Inches, April 1940.2021-01-01https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0051_cvtsia_2_0_co_2.pdf2020-10-17Chart VII. Total Snowfall, Inches, April 1940.https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0118_ccs_2_0_co_2.xmlCONDENSED CLIMATOLOGICAL SUMMARY2021-01-01https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0118_ccs_2_0_co_2.pdf2020-10-17CONDENSED CLIMATOLOGICAL SUMMARYhttps://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_163.xmlAnnouncements2021-01-03https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_163.pdf2020-11-29Announcementshttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0111_raf_2_0_co_2.xmlRIVERS AND FLOODS2021-02-10https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0111_raf_2_0_co_2.pdf2020-10-17RIVERS AND FLOODShttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0095_aiftsd_2_0_co_2.xmlAN INSTRUMENT FOR THE SPECTROSCOPIC DETERMINATION OF PRECIPITABLE ATMOSPHERIC WATER VAPOR, AND ITS CALIBRATION2021-02-15https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0095_aiftsd_2_0_co_2.pdf2020-10-17AN INSTRUMENT FOR THE SPECTROSCOPIC DETERMINATION OF PRECIPITABLE ATMOSPHERIC WATER VAPOR, AND ITS CALIBRATIONhttps://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0115_npoa_2_0_co_2.xmlNORTH PACIFIC OCEAN, APRIL 19402021-02-18https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0115_npoa_2_0_co_2.pdf2020-10-17NORTH PACIFIC OCEAN, APRIL 1940https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_165.xmlPrograms, Washington Meetings, April 24–252021-02-22https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_165.pdf2020-11-29Programs, Washington Meetings, April 24–25https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_157.xmlShorter Contributions and Notes2021-02-22https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_157.pdf2020-11-29Shorter Contributions and Noteshttps://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_fmi.xmlBulletin of the American Meteorological Society, Volume 21, Number 4, April 19402021-03-01https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_fmi.pdf2020-11-29Bulletin of the American Meteorological Society, Volume 21, Number 4, April 1940https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0116_tadotf_2_0_co_2.xmlTYPHOONS AND DEPRESSIONS OVER THE FAR EAST, APRIL 19402021-03-07https://test-journals.ametsoc.org/view/journals/mwre/68/4/1520-0493_1940_068_0116_tadotf_2_0_co_2.pdf2020-10-17TYPHOONS AND DEPRESSIONS OVER THE FAR EAST, APRIL 1940https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_149.xmlA Photoelectric Cell for Measuring Ultraviolet Solar and Sky Radiation on a Horizontal Plane2021-03-07https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_149.pdf2020-11-29A Photoelectric Cell for Measuring Ultraviolet Solar and Sky Radiation on a Horizontal Planehttps://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_156.xmlOn Periodicities in Smithsonian Solar-Constant Values2021-03-17https://test-journals.ametsoc.org/view/journals/bams/21/4/1520-0477-21_4_156.pdf2020-11-30On Periodicities in Smithsonian Solar-Constant Values