Aum Toc Asos User Guide
asos_user_guide
User Manual:
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Page Count: 74
- CHAPTER ONE
- 1.0 Introduction
- 1.1 Purpose and Scope
- 1.2 Background
- 1.3 Total Surface Observation Concept
- 1.4 Quality Control
- 1.5 General Conventions
- CHAPTER TWO
- 2.0 System Description
- 2.1 System Components
- 2.1.1 ASOS Sensor Groups
- 2.1.2 Acquisition Control Unit
- 2.1.3 Operator Interface Device
- 2.2 ASOS Data Outlets
- 2.3 ASOS Data Types
- 2.4 METAR Elements
- 2.5 Automated METAR vs. Manual METAR
- CHAPTER THREE
- 3.0 Automating the Objective Weather Elements
- 3.1 Ambient and Dew Point Temperature
- 3.1.1 Ambient/Dew Point Temperature Sensor
- 3.1.2 Ambient Temperature/Dew Point Temperature Algorithm
- 3.1.3 Ambient Temperature/Dew Point Temperature Strengths and Limitations
- 3.2 Wind
- 3.2.1 Wind Sensor
- 3.2.2 Wind Algorithm
- 3.2.2.1 Wind Direction and Speed
- 3.2.2.2 Wind Character
- 3.2.2.2a Gusts
- 3.2.2.2b Variable Wind
- 3.2.2.2c Squalls
- 3.2.2.3 Wind Remarks
- 3.2.2.3a Wind Shift
- 3.2.2.3b Peak Wind
- 3.2.3 Wind Strengths and Limitations
- 3.3 Pressure
- 3.3.1 Pressure Sensor
- 3.3.2 Pressure Algorithm
- 3.3.3 Pressure Strengths and Limitations
- 3.4 Precipitation Accumulation
- 3.4.1 Heated Tipping Bucket Precipitation Gauge
- 3.4.2 Precipitation Accumulation Algorithm
- 3.4.3 Precipitation Accumulation Strengths and Limitations
- CHAPTER FOUR
- 4.0 Automating the Subjective Weather Elements
- 4.1 Automating Sky Condition
- 4.1.1 Cloud Height Indicator Sensor
- 4.1.2 Sky Condition Algorithm
- 4.1.2a Meteorological Discontinuity Sensors
- 4.1.2b Back-Up Sensors
- 4.1.3 Sky Condition Strengths and Limitations
- 4.2 Automating Surface Visibility
- 4.2.1 Principles in Visibility Automation
- 4.2.2 Forward Scatter Sensor
- 4.2.3 Visibility Algorithm
- 4.2.3a Meteorological Discontinuity Visibility Sensor
- 4.2.3b Back-Up Visibility Sensor
- 4.2.4 Visibility Strengths and Limitations
- 4.3 Automating Present Weather and Obscurations
- 4.3.1 Single Site Lightning Sensor
- 4.3.2 Single Site Lightning Sensor Algorithm
- 4.3.3 Automated Lightning Detection and Reporting System (ALDARS)
- 4.3.4 ASOS Lightning Sensor Strengths and Limitations
- 4.3.5 Precipitation Identification Sensor
- 4.3.6 PI Algorithm
- 4.3.7 PI Strengths and Limitations
- 4.3.8 Freezing Rain Sensor
- 4.3.9 FZRA Algorithm
- 4.3.10 FZRA Strengths and Limitations
- 4.3.11 Obscuration Algorithm
- 4.3.12 Obscuration Algorithm Strengths and Limitations
- CHAPTER FIVE
- 5.0 Explanations/Examples of ASOS Observations
- 5.1 5-Second Wind Updates
- 5.2 One-Minute Observations
- 5.3 ASOS Aviation Routine Weather Reports
- 5.3.1 Backup and Augmentation
- 5.3.2 Missing vs. Non-Event Data
- 5.3.3 Estimated Data
- 5.3.4 Examples of METAR/SPECI Reports 43
- 5.4 Auxiliary Data 46
- 5.5 Standard Hydrometeorological Exchange Format (SHEF) Messages
- 5.5.1 SHEF 15-Minute Precipitation Criteria Message
- 5.5.2 SHEF Hourly Routine Precipitation Message
- 5.6 Daily and Monthly Summaries
- 5.6.1 Daily Summary Message
- 5.6.2 Monthly Summary Message
- 5.7 ASOS High-Resolution Sensor Data
- CHAPTER SIX
- 6.0 ASOS Data Outlets
- 6.1 Interactive Video Screen Displays
- 6.2 Non-Interactive Screen Displays
- 6.3 ASOS Printer
- 6.4 Long-Line Dissemination
- 6.5 Computer-Generated Voice Messages
- CHAPTER SEVEN
- 7.0 Introduction
- 7.1 Data Not Provided by ASOS
- 7.2 Planned Product Improvement
- 7.2.1 Ice-Free Wind Sensor
- 7.2.2 Dew Point Sensor
- 7.2.3 Ceilometer/Sky Condition
- 7.2.4 All-Weather Precipitation Accumulation Gauge
- 7.2.5 Enhanced Precipitation Identification
- 7.2.6 Sunshine
- 7.2.7 Schedule
- 7.3 Summary
- Figures
- Figure 2. ASOS Combined Sensor Group
- Figure 3. Additional Sensor Group
- Figure 4. Availability of ASOS Data
- Figure 5. ASOS Hygrothermometer
- Figure 6. ASOS Anemometer
- Figure 7. ASOS Pressure Sensor
- Figure 8. ASOS Heated Tipping Bucket
- Figure 9. Laser Beam Ceilometer
- Figure 10. Example Of Cloud "Hit" At 4,500 Feet
- Figure 11. Example Of "Unknown Hit"
- Figure 12. Example of Packing Effect
- Figure 13. Forward Scatter Visibility Sensor
- Figure 14. Visibility Sensor-Top View
- Figure 15. Lightning Sensor
- Figure 16. The Precipitation Identification Sensor
- Figure 17. Freezing Rain Sensor
- Figure 18. ASOS Network Data Flow-Initial Configuration (1997)
- Figure 19. ASOS Network Data Flow--Final Configuration