Federal Meteorological Handbook No. 1 - Marrella

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Table 12-8. 3-Hour Pressure Change

Amount of Barometric Change (Rise or Fall) in the Past 3 Hours "ppp"

Code Inches of Hectopascals Code Inches of Hectopascals Code Inches of Hectopascals

Figure Mercury Figure Mercury Figure Mercury

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AOS 452 Lab 1: UNIX and the WEATHER program - Marrella

Table 12-7 Characteristics of Barometer Tendency Primary Code Description Requirement Figure ��

� � � � Table 12-8. 3-Hour Pressure Change Amount of Barometric Change (Rise or Fall) in the Past 3 Hours "ppp" Code Inches of Hectopascals Code Inches of Hectopascals Code Inches of Hectopascals Figure Mercury Figure Mercury Figure Mercury ��

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U.S. DEPARTMENT OF COMMERCE/ Nation
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1.1 Purpose CHAPTER 1 INTRODUCTION
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1.8 Unforeseen Requirements No set
Page 17 and 18: Manual and augmented weather observ
Page 19 and 20: a. Accuracy of Time in Reports. A p
Page 21 and 22: CHAPTER 3 CERTIFICATION AND QUALITY
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Page 25 and 26: � ��
Page 27 and 28: Table 5-1. Estimating Wind Speed Kn
Page 29 and 30: CHAPTER 6 VISIBILITY ��
Page 31 and 32: Table 6-1. Reportable Visibility Va
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Page 35 and 36: . Fog. A visible aggregate of minut
Page 37 and 38: (2) Proximity. Unless otherwise dir
Page 39 and 40: Table 8-5. Notations for Reporting
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Page 43 and 44: f. Sky Condition Range, Accuracy, a
Page 45 and 46: Table 9-3. Priority for Reporting L
Page 47 and 48: 10.1 General CHAPTER 10 TEMPERATURE
Page 49 and 50: 11.1 General CHAPTER 11 PRESSURE At
Page 51 and 52: 11.6 Summary of Pressure Observing
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Page 55 and 56: c. The values shall be based on lig
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Page 59 and 60: If the temperature is not available
Page 61 and 62: f. Tower or Surface Visibility (TWR
Page 63 and 64: o. Virga (VIRGA_(DIR)) [Plain Langu
Page 65 and 66: 12.7.2 Additive and Automated Maint
Page 67: e. 6-Hourly Maximum Temperature (1s
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Federal Meteorological Handbook No. 1 - Marrella

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