
Space Physics and Aeronomy, Upper Atmosphere Dynamics and Energetics
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Earth's upper atmosphere is an open system that is strongly influenced by energy and momentum inputs from both above and below. New observation and modeing techniques have provided insights into dynamics, energetics, and chemical processes in the upper atmosphere.
Upper Atmosphere Dynamics and Energetics presents an overview of key research advances in upper atmospheric physics, and measurement and modeling techniques, along with remaining challenges for understanding the state and variability of the upper atmospheric system.
Volume highlights include:
* Insights into the interconnections between different areas of upper atmospheric science
* Appreciation of the dynamics and complexity of the global upper atmospheric system
* Techniques for observing and measuring the upper atmosphere
* Responses of the upper atmosphere to external drivers
The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
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Content
- Cover
- Title Page
- Copyright Page
- Contents
- List of Contributors
- Preface
- Part I Energetics and Dynamics of the Upper Atmosphere
- Chapter 1 Joule Heating in the Thermosphere
- 1.1. INTRODUCTION
- 1.2. PHYSICS OF JOULE HEATING
- 1.3. WIND EFFECTS ON JOULE HEATING
- 1.4. Effects of Irregularities and Electric-Field Variability
- 1.5. CONDUCTIVITY RELATION TO ELECTRIC FIELD
- 1.6. POYNTING FLUX
- 1.7. OBSERVATIONS AND MODELING OF JOULE HEATING AND POYNTING FLUX
- 1.8. ESTIMATING JOULE HEATING THROUGH DATA ASSIMILATION
- 1.9. DYNAMICAL EFFECTS OF JOULE HEATING
- 1.10. JOULE HEATING EFFECTS ON COMPOSITION, TEMPERATURE, AND DENSITY
- 1.11. SUMMARY
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 2 Momentum and Energy Budgets in the High-Latitude Lower Thermospheric Wind System
- 2.1. INTRODUCTION
- 2.2. MOMENTUM FORCES ACTING ON THE HIGH-LATITUDE LOWER THERMOSPHERIC WIND SYSTEM
- 2.3. VERTICAL VORTICITY AND HORIZONTAL DIVERGENCE OF HIGH-LATITUDE LOWER THERMOSPHERIC WINDS
- 2.4. RELATIVE CONTRIBUTIONS OF MOMENTUM FORCING AND HEATING TO HIGH-LATITUDE LOWER THERMOSPHERIC ROTATIONAL WINDS
- 2.5. STEADY-STATE AVAILABLE ENERGY BUDGET IN THE HIGH-LATITUDE LOWER THERMOSPHERE
- 2.6. SUMMARY
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 3 Upper Thermospheric Winds: Forcing, Variability, and Effects
- 3.1. INTRODUCTION
- 3.2. MOMENTUM FORCING IN THE UPPER THERMOSPHERE
- 3.3. VARIATIONS OF UPPER THERMOSPHERE WINDS
- 3.4. LOWER ATMOSPHERIC WAVE COUPLING
- 3.5. EFFECTS OF WINDS ON THE IONOSPHERE-THERMOSPHERE SYSTEM
- 3.6. WIND OBSERVATIONS
- 3.7. SUMMARY AND FUTURE WORK
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 4 Influence of Nonhydrostatic Processes on the Ionosphere-Thermosphere
- 4.1. INTRODUCTION
- 4.2. GLOBAL IONOSPHERE-THERMOSPHERE MODEL (GITM) AND NONHYDROSTATIC PROCESSES
- 4.3. INFLUENCE ON THE VERTICAL WINDS
- 4.4. INFLUENCE ON THE ACOUSTIC-GRAVITY WAVES
- 4.5. CONCLUSION AND DISCUSSION
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 5 The Middle- and Low-Latitude Neutral Wind Dynamo
- 5.1. INTRODUCTION
- 5.2. IONOSPHERIC ELECTRODYNAMICS
- 5.3. CONDUCTIVITIES
- 5.4. THERMOSPHERIC WINDS
- 5.5. WIND DYNAMO
- 5.6. FUTURE DIRECTIONS
- ACKNOWLEDGMENTS
- REFERENCES
- Part II Upper Atmospheric Composition
- Chapter 6 Neutral Composition in the Upper Atmosphere
- 6.1. INTRODUCTION
- 6.2. THE HOMOPAUSE
- 6.3. THE VERTICAL STRUCTURE OF THERMOSPHERIC COMPOSITION
- 6.4. MOLECULAR AND ATOMIC OXYGEN
- 6.5. THE REASONS THAT THERMOSPHERIC COMPOSITION CHANGES: A THREE-DIMENSIONAL UNDERSTANDING
- 6.6. HYDROGEN AND WHAT IT TELLS US
- 6.7. GEOMAGNETIC STORMS
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 7 Storm-Time Neutral Composition Changes in the Upper Atmosphere
- 7.1. INTRODUCTION
- 7.2. OBSERVATIONS OF THERMOSPHERE IN FUV
- 7.3. ESTIMATION OF THE EFFECTIVE TEMPERATURE IN THE LOWER THERMOSPHERE
- 7.4. THERMOSPHERIC NITRIC OXIDE VARIATIONS
- 7.5. THERMOSPHERIC N 149.3 NM EMISSION
- 7.6. DISCUSSION
- 7.7. SUMMARY
- ACKNOWLEDGMENTS
- Chapter 8 Neutral Hydrogen in the Terrestrial Thermosphere and Exosphere: A Ground-Based Perspective
- 8.1. INTRODUCTION
- 8.2. THE HOMOSPHERE AND HETEROSPHERE
- 8.3. AN ATMOSPHERE IN HYDROSTATIC EQUILIBRIUM
- 8.4. THE EXOSPHERE
- 8.5. GETTING AT THE ATOMIC HYDROGEN ALTITUDE PROFILE [H](z )
- 8.6. GEOCORONAL BALMER
- 8.7. FABRY-PEROT OBSERVATIONS
- 8.8. MODERN AREAS OF SCIENTIFIC FOCUS
- 8.9. NEW HORIZONS
- ACKNOWLEDGMENTS
- REFERENCES
- Part III Low and Upper Atmosphere Coupling Through Waves
- Chapter 9 Atmosphere-Ionosphere (A-I) Coupling by Solar and Lunar Tides
- 9.1. INTRODUCTION
- 9.2. STRATOSPHERE SUDDEN WARMINGS (SSW) AND A-I COUPLING BY ATMOSPHERIC TIDES
- 9.3. TIDE, PW, AND UFKW INTERACTIONS WITHIN A-I COUPLING
- 9.4. SUMMARY, CONCLUSIONS, AND OPEN QUESTIONS
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 10 Planetary Waves and Their Impact on the Mesosphere, Thermosphere, and Ionosphere
- 10.1. INTRODUCTION
- 10.2. INTRODUCTION TO PLANETARY WAVES AND THEIR OBSERVATIONS IN THE MLT
- 10.3. IMPACTS ON THE THERMOSPHERE AND IONOSPHERE
- 10.4. SUMMARY AND RECOMMENDATIONS
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 11 Longitudinal Variation in the Mass Density of the Thermosphere: A GAIA Simulation
- 11.1. INTRODUCTION
- 11.2. DESCRIPTION OF THE MODEL AND NUMERICAL SIMULATION
- 11.3. RESULTS
- 11.4. CONCLUDING REMARKS
- ACKNOWLEDGMENTS
- REFERENCES
- Part IV Upper Atmosphere Structure and Variability
- Chapter 12 Equatorial Thermosphere Anomaly
- 12.1. INTRODUCTION
- 12.2. MECHANISMS FOR THE ETA FORMATION
- 12.3. TIDAL MODULATION OF THE ETA AND THE EIA
- 12.4. GEOMAGNETIC ACTIVITY MODULATION OF THE COUPLING BETWEEN THE ETA AND THE EIA
- 12.5. SOLAR ACTIVITY DEPENDENCE OF THE ETA AND THE EIA
- 12.6. CONCLUDING REMARKS
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 13 Structured Storm-Time Polar Ionosphere and Its Drivers: A Review
- 13.1. INTRODUCTION
- 13.2. SUBAURORAL LARGE-SCALE STRUCTURES AND THEIR DRIVING PROCESSES
- 13.3. LARGE-SCALE AND MESOSCALE PLASMA DENSITY ENHANCEMENTS IN THE HIGH-LATITUDE IONOSPHERE
- 13.4. POLAR IONOSPHERIC IRREGULARITIES
- 13.5. SUMMARY
- REFERENCES
- Chapter 14 Solar Flare Effects on the Thermosphere and Ionosphere
- 14.1. INTRODUCTION
- 14.2. MODELS AND DATA
- 14.3. FLARE RESPONSE IN THE THERMOSPHERE AND IONOSPHERE
- 14.4. FLARE CHARACTERISTICS AND THEIR EFFECTS ON THE FLARE RESPONSE
- 14.5. SOLAR FLARES AND THEIR EUV LATE PHASE
- 14.6. LARGE-SCALE TAD OCCURRENCES DURING SOLAR FLARES AND GEOMAGNETIC STORMS
- 14.7. SUMMARY
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 15 Day-to-Day Variability of the Thermosphere and Ionosphere
- 15.1. INTRODUCTION
- 15.2. DAY-TO-DAY VARIABILITY DUE TO SOLAR RADIATION
- 15.3. DAY-TO-DAY VARIABILITY DUE TO SOLAR WIND AND GEOMAGNETIC ACTIVITY
- 15.4. DAY-TO-DAY VARIABILITY DUE TO METEOROLOGICAL FORCING
- 15.5. OPEN QUESTIONS AND PERSPECTIVES FOR FUTURE RESEARCH
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 16 Response of the Ionosphere to Varying Solar Fluxes
- 16.1. INTRODUCTION
- 16.2. SOLAR PROXIES
- 16.3. CHARACTERISTICS
- 16.4. THE IONOSPHERE UNDER EXTREME SOLAR CONDITIONS
- 16.5. THE IONOSPHERE AND THERMOSPHERE DURING SOLAR FLARES
- 16.6. SUMMARY
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 17 Long-Term Trends in the Upper Atmosphere
- 17.1. INTRODUCTION
- 17.2. VARIOUS PROBLEMS OF TREND INVESTIGATIONS
- 17.3. MESOSPHERE AND LOWER THERMOSPHERE
- 17.4. UPPER THERMOSPHERE AND F REGION IONOSPHERE
- 17.5. CONCLUDING REMARKS
- ACKNOWLEDGMENTS
- REFERENCES
- Part V Upper Atmosphere Data Assimilation
- Chapter 18 Inference of Hidden States by Coupled Thermosphere-Ionosphere Data Assimilation: Applications to Observability and Predictability of Neutral Mass Density
- 18.1. INTRODUCTION
- 18.2. BACKGROUND
- 18.3. ENSEMBLE DATA ASSIMILATION AND FORECAST APPROACHES
- 18.4. OBSERVING SYSTEM EXPERIMENT (OSE)
- 18.5. OBSERVING SYSTEM SIMULATION EXPERIMENTS (OSSES)
- 18.6. CONCLUSIONS
- ACKNOWLEDGMENTS
- REFERENCES
- Part VI Upper Atmosphere Observations
- Chapter 19 The Ground-Based Airglow Imager Network in China: Recent Observational Results
- 19.1. THE GROUND-BASED AIRGLOW NETWORK ACROSS CHINA
- 19.2. GRAVITY WAVES IN THE MESOPAUSE REGION OVER CHINA
- 19.3. STATISTICAL CHARACTERISTICS OF MSTIDS OVER NORTHERN CHINA
- 19.4. OBSERVATIONS OF EQUATORIAL PLASMA BUBBLES IN SOUTHERN CHINA
- 19.5. THERMOSPHERIC OSCILLATIONS OBSERVED USING FABRY-PEROT INTERFEROMETERS
- 19.6. SUMMARY
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 20 MLT Science Enabled by Atmospheric Lidars
- 20.1. INTRODUCTION
- 20.2. LIDAR MEASUREMENTS IN THE MESOSPHERE AND LOWER THERMOSPHERE
- 20.3. CLIMATOLOGY AND LONG-TERM CHANGE IN THE MLT
- 20.4. LIDAR MEASURED MLT TIDES AND TEMPERATURE/WIND ANOMALIES ASSOCIATED WITH SSW AND GEOMAGNETIC STORMS
- 20.5. GRAVITY WAVE DYNAMICS, FLUXES, AND ATMOSPHERIC STABILITIES
- 20.6. SYNERGISTIC INVESTIGATIONS WITH CLUSTERED INSTRUMENTATION
- 20.7. SPORADIC AND THERMOSPHERIC METAL LAYERS
- 20.8. PROSPECTS AND CONCLUDING REMARKS
- REFERENCES
- Chapter 21 Remote Sensing of Magnetic Fields Induced by Electrojets From Space: Measurement Techniques and Sensor Design
- 21.1. INTRODUCTION
- 21.2. ZEEMAN SENSING OF CURRENT-INDUCED MAGNETIC FIELDS
- 21.3. MEM: A CONCEPTUAL MULTI-ELEMENTS FULL STOKES O2 118-GHZ RECEIVER SYSTEM
- 21.4. OPTIMIZED MEM -FIELD SENSING TECHNIQUE
- 21.5. A CUBESAT MISSION EXAMPLE: STUDY OF FEEDING AND DRAINAGE OF AURORAL ELECTROJET
- 21.6. SUMMARY AND CONCLUSION
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 22 Remote Sensing of Global Lower Thermospheric Winds: Sensing Techniques and Sensor Design
- 22.1. INTRODUCTION
- 22.2. LIMB SOUNDING OF THERMOSPHERIC WIND PROFILES FROM SPACE
- 22.3. COMPACT, LOW-POWER, AND HIGH-SENSITIVITY THZ HETERODYNE TECHNOLOGY
- 22.4. DISCUSSION AND CONCLUSION
- ACKNOWLEDGMENTS
- REFERENCES
- Chapter 23 Exploring the Upper Atmosphere: Using Optical Remote Sensing
- 23.1. INTRODUCTION
- 23.2. ADDRESSING CHALLENGES
- 23.3. OPTICAL REMOTE SENSING
- 23.4. SUMMARY OF PROCESSES AND SIGNATURES
- 23.5. UV REMOTE SENSING
- 23.6. MISSION ARCHITECTURE
- 23.7. DISCUSSION
- ACKNOWLEDGMENTS
- REFERENCES
- Index
- EULA
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