Earth observation (EO) is the gathering of information about the physical, chemical, and biologic... more Earth observation (EO) is the gathering of information about the physical, chemical, and biological systems of the planet via remote-sensing technologies, supplemented by Earth-surveying techniques, which encompasses the collection, analysis, and presentation of data. Earth observation is used to monitor and assess the status of and changes in natural and built environments. In the present book, twelve typical literatures about earth observation published on international authoritative journals were selected to introduce the worldwide newest progress, which contains reviews or original researches on environmental protection, remote observation monitoring, thermonuclear reaction, earth observation satellite, space image and integration and earth-surveying techniques, etc. We hope this book can demonstrate advances in earth observation as well as give references to the researchers, students and other related people.
The long-term data set of total nightglow intensity of the oxygen red 630.0~nm line observed at A... more The long-term data set of total nightglow intensity of the oxygen red 630.0~nm line observed at Abastumani (41.8°N, 42.8°E) between 1957–1993 is investigated. The long-term trend and characteristic variations in solar radiation during an 11 year cycle of the red-line intensity are different after astronomical twilight (premidnight) and at midnight. The amplitude of deviation of the red-line intensity from its mean value at solar maximum and (or) minimum phase is greatest after astronomical twilight and decreases toward midnight. The long-term trend of these variations changes from its value about 0.74 R/year premidnight to its minimum negative value of about –1.92 R/year at and after midnight. This behavior of the long-term trend is considered as a possible result of an increase in electron density below the peak height (hmF2) of the ionospheric F2 layer and lowering of the height hmF2 after midnight predicted by the TIME-GCM model on the assumption of an increase in density of gree...
Long-term data sets of total nightglow intensity of the oxygen red 630 0 nm line observed at Abas... more Long-term data sets of total nightglow intensity of the oxygen red 630 0 nm line observed at Abastumani 41 75 o N 42 82 o E and the ionosphere F2 layer critical frequency f 0 F2 observed at Almaty 43 25 o N 76 92 o E during the period of 1957-1993 have been investigated The comparison of the annual mean value of the red line intensity and the ionospheric F2 layer maximum electron density NmF2 reveals the following properties a the dominant long-term variation for both parameters has a characteristic period of 11-year consistent with the solar cycle The amplitude of the red line nightglow intensity deviation from its mean value at the solar maximum minimum phase is greater than that of the NmF2 during the same period of night b The long-term trends of these variations are different for the period following twilight pre-midnight and that after midnight The long-term trend of the red line intensity is about one order of magnitude greater than that of the NmF2 c The second order regress...
Nat Gopalswamy, nat.gopalswamy@nasa.gov NASA Goddard Space Flight Center, Greenbelt, Maryland, Un... more Nat Gopalswamy, nat.gopalswamy@nasa.gov NASA Goddard Space Flight Center, Greenbelt, Maryland, United States Joseph Davila, joseph.m.davila@nasa.gov NASA Goddard Space Flight Center, Greenbelt, Maryland, United States Franz-Josef Luebken, luebken@iap-kborn.de Leibniz-Institute of Atmospheric Physics (IAP), Kuehlungsborn, Germany Marianna Shepherd, mshepher@yorku.ca York University, Toronto, Canada Toshitaka Tsuda, tsuda@rish.kyoto-u.ac.jp RISH, Kyoto University, Uji, Japan
Journal of Atmospheric and Solar-Terrestrial Physics, 2018
The Wind Imaging Interferometer (WINDII) experiment on the Upper Atmosphere Research Satellite (U... more The Wind Imaging Interferometer (WINDII) experiment on the Upper Atmosphere Research Satellite (UARS) offers a global view of the O(1D) airglow emission rates and neutral winds over the entire altitude range from 190 to 300 km, and provides a unique means for drawing a self-consistent picture of the state of the nighttime upper thermosphere at southern mid-latitudes and by proxy–the ionosphere. The focus of the current study is an investigation of the global seasonal, local time, altitude and longitudinal variability of O(1D) nightglow at southern mid-latitudes (20°S–40°S) employing multi-year observations of O(1D) airglow VERs and neutral winds over the same altitude range and by the same instrument. The results reported here are from four austral seasons, two summers (December solstice, 1992–1993 and 1994–1995), and two equinoxes (March and September 1992). A clear midnight O(1D) VER enhancement is observed at high solar activity during austral summer solstice and equinox (DJF, 19...
To investigate the MLT (Mesosphere and Lower Thermosphere) region, we developed a groundbased ins... more To investigate the MLT (Mesosphere and Lower Thermosphere) region, we developed a groundbased instrument called SATI (Spectral Airglow Temperature Imager). One SATI instrument was installed and has monitored the polar MLT region at Resolute Bay (74.68o N, 94.90o W) since November, 2001, and another at Eureka (80.00o N, 86.25o W) November, 2007, which was developed for the CANDAC (Canadian Network
Earth observation (EO) is the gathering of information about the physical, chemical, and biologic... more Earth observation (EO) is the gathering of information about the physical, chemical, and biological systems of the planet via remote-sensing technologies, supplemented by Earth-surveying techniques, which encompasses the collection, analysis, and presentation of data. Earth observation is used to monitor and assess the status of and changes in natural and built environments. In the present book, twelve typical literatures about earth observation published on international authoritative journals were selected to introduce the worldwide newest progress, which contains reviews or original researches on environmental protection, remote observation monitoring, thermonuclear reaction, earth observation satellite, space image and integration and earth-surveying techniques, etc. We hope this book can demonstrate advances in earth observation as well as give references to the researchers, students and other related people.
The long-term data set of total nightglow intensity of the oxygen red 630.0~nm line observed at A... more The long-term data set of total nightglow intensity of the oxygen red 630.0~nm line observed at Abastumani (41.8°N, 42.8°E) between 1957–1993 is investigated. The long-term trend and characteristic variations in solar radiation during an 11 year cycle of the red-line intensity are different after astronomical twilight (premidnight) and at midnight. The amplitude of deviation of the red-line intensity from its mean value at solar maximum and (or) minimum phase is greatest after astronomical twilight and decreases toward midnight. The long-term trend of these variations changes from its value about 0.74 R/year premidnight to its minimum negative value of about –1.92 R/year at and after midnight. This behavior of the long-term trend is considered as a possible result of an increase in electron density below the peak height (hmF2) of the ionospheric F2 layer and lowering of the height hmF2 after midnight predicted by the TIME-GCM model on the assumption of an increase in density of gree...
Long-term data sets of total nightglow intensity of the oxygen red 630 0 nm line observed at Abas... more Long-term data sets of total nightglow intensity of the oxygen red 630 0 nm line observed at Abastumani 41 75 o N 42 82 o E and the ionosphere F2 layer critical frequency f 0 F2 observed at Almaty 43 25 o N 76 92 o E during the period of 1957-1993 have been investigated The comparison of the annual mean value of the red line intensity and the ionospheric F2 layer maximum electron density NmF2 reveals the following properties a the dominant long-term variation for both parameters has a characteristic period of 11-year consistent with the solar cycle The amplitude of the red line nightglow intensity deviation from its mean value at the solar maximum minimum phase is greater than that of the NmF2 during the same period of night b The long-term trends of these variations are different for the period following twilight pre-midnight and that after midnight The long-term trend of the red line intensity is about one order of magnitude greater than that of the NmF2 c The second order regress...
Nat Gopalswamy, nat.gopalswamy@nasa.gov NASA Goddard Space Flight Center, Greenbelt, Maryland, Un... more Nat Gopalswamy, nat.gopalswamy@nasa.gov NASA Goddard Space Flight Center, Greenbelt, Maryland, United States Joseph Davila, joseph.m.davila@nasa.gov NASA Goddard Space Flight Center, Greenbelt, Maryland, United States Franz-Josef Luebken, luebken@iap-kborn.de Leibniz-Institute of Atmospheric Physics (IAP), Kuehlungsborn, Germany Marianna Shepherd, mshepher@yorku.ca York University, Toronto, Canada Toshitaka Tsuda, tsuda@rish.kyoto-u.ac.jp RISH, Kyoto University, Uji, Japan
Journal of Atmospheric and Solar-Terrestrial Physics, 2018
The Wind Imaging Interferometer (WINDII) experiment on the Upper Atmosphere Research Satellite (U... more The Wind Imaging Interferometer (WINDII) experiment on the Upper Atmosphere Research Satellite (UARS) offers a global view of the O(1D) airglow emission rates and neutral winds over the entire altitude range from 190 to 300 km, and provides a unique means for drawing a self-consistent picture of the state of the nighttime upper thermosphere at southern mid-latitudes and by proxy–the ionosphere. The focus of the current study is an investigation of the global seasonal, local time, altitude and longitudinal variability of O(1D) nightglow at southern mid-latitudes (20°S–40°S) employing multi-year observations of O(1D) airglow VERs and neutral winds over the same altitude range and by the same instrument. The results reported here are from four austral seasons, two summers (December solstice, 1992–1993 and 1994–1995), and two equinoxes (March and September 1992). A clear midnight O(1D) VER enhancement is observed at high solar activity during austral summer solstice and equinox (DJF, 19...
To investigate the MLT (Mesosphere and Lower Thermosphere) region, we developed a groundbased ins... more To investigate the MLT (Mesosphere and Lower Thermosphere) region, we developed a groundbased instrument called SATI (Spectral Airglow Temperature Imager). One SATI instrument was installed and has monitored the polar MLT region at Resolute Bay (74.68o N, 94.90o W) since November, 2001, and another at Eureka (80.00o N, 86.25o W) November, 2007, which was developed for the CANDAC (Canadian Network
Uploads
Papers by Marianna Shepherd