Abstract
Küresel Navigasyon Uydu Sistemleri (GNSS) jeodezik ölçmeler, araç takip sistemleri, turizm, tarım, askeri, deformasyon ölçmeleri ve arama kurtarma çalışmaları gibi birçok farklı alana hizmet vermektedir. GNSS teknolojileri ayrıca güneş aktiviteleri, iyonosfer ve troposferin incelenmesine de olanak sağlamaktadır. Bu çalışmada, Hassas Nokta Konum Belirleme (PPP) yöntemi ile elde edilen troposferik gecikmelerden yararlanarak Yoğuşabilir Su Buharı (PWV:Precipitable Water Vapor) miktarının belirlenmesi ve elde edilen bu değerlerin günümüzde referans olarak kabul gören radyosondadan elde edilen PWV değerleri ile karşılaştırılması yapılmıştır. Çalışma kapsamında Türkiye’de bulunan Samsun, Erzurum, İstanbul ve İzmir radyosonda istasyonları ve yakın konumlarında bulunan SAM1, ERZR, ISTN ve IZMI CORS-TR istasyonlarının 2016-2020 yıllarına ait verileri kullanılmıştır. GNSS verilerinin değerlendirilmesinde CSRS-PPP servisinden yararlanılmıştır. Elde edilen sonuçlar incelendiğinde iki yöntemle elde edilen PWV değerlerinin uyum içerisinde olduğu ve çoğunlukla benzer trend gösterdiği görülmüştür.
Keywords
References
- Bevis, M., Businger, S., Chiswell, S., Herring, A., Anthes, R., Rocken, C., Ware, R., 1994, “GPS meteorology: Mapping zenith wet delays onto precipitable water”, Journal of Applied Meteorology and Climatology, Cilt 33 , Sayı 3, ss. 379-386, https://doi.org/10.1175/1520-0450(1994)033<0379:GMMZWD>2.0.CO;2
- Bezcioğlu, M., Yiğit, C., & Bodur, M., 2019, “Kinematik PPP-AR ve Geleneksel PPP Yöntemlerin Performanslarının Değerlendirilmesi: Antartika Yarımadası Örneği”, Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt 19, Sayı 1, ss. 162-169, https://doi.org/10.35414/akufemubid.467336.
- Davis, J., Herring, T., Shapiro, I., Rogers A., Elgered G., 1985, “Geodesy by Radio Interferometry: Effects of Atmospheric Modeling Errors on Estimates of Baseline Length”, Radio Science, https://doi.org/10.1029/RS020i006p01593
- Gürbüz G. Akgül V. Görmüş K. S. Kutoğlu Ş. H., 2021, “Assessment of precipitable water vapor over Turkey using GLONASS and GPS”, Journal of Atmospheric and Solar-Terrestrial Physics, Cilt 222 (105712), https://doi.org/10.1016/j.jastp.2021.105712
- Gürbüz G., Jin S., 2017, “Long-time variations of precipitable water vapour estimated from GPS, MODIS and radiosonde observations in Turkey”, International Journal of Climatology, https://doi.org/10.1002/joc.5153
- Gratton P., Banville S., Lachapelle G., O'Keefe K., 2021, “Kinematic Zenith Tropospheric Delay Estimation with GNSS PPP in Mountainous Areas”, Sensors, Cilt 21, Sayı 17, https://doi.org/10.3390/ s21175709
- Li, Z., Muller, J. P., Cross, P., 2003, “Comparison of precipitable water vapor derived from radiosonde, GPS, and Moderate-Resolution Imaging Spectroradiometer measurements”, Journal of Geophysical Research Atmospheres, Cilt 108, 4651, https://doi.org/10.1029/2003JD003372
- Mekik, Ç., Deniz, İ., 2017, “Modelling and validation of the weighted mean temperature for Turkey”, Meteorological Applications, Cilt 24, ss. 92-100, https://doi.org/10.1002/met.1608
- Pang, S., Yeh, T., Honh, J., Chen, C., 2021, “Variability and climatology of precipitable water vapor from 12-year GPS observations in Taiwan”, Advances in Space Research, Cilt 67, Sayı 8, 2333-2346, https://doi.org/10.1016/j.asr.2021.01.021
- Tunalı, E., 2018, “PPP ve IGS Gerçek Zaman Servisi ile Su Buharı Hareketlerinin İzlenmesi”, Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt 18, 017101(343-356), https://dergipark.org.tr/tr/pub/akufemubid/issue/43824/538634.
- Zhao, Q., Yao, Y., Yao, W. Li, Z., 2018, “Real-time precise point positioning-based zenith tropospheric delay for precipitation forecasting”, Scientific Reports, Cilt 8, 7939, https://doi.org/10.1038/s41598-018-26299-3
Abstract
Global Navigation Satellite Systems (GNSS) serve many different fields such as geodetic measurements, vehicle tracking systems, tourism, agriculture, military, deformation measurements and search and rescue studies. GNSS technologies also allow the study of solar activities, ionosphere and troposphere. In this study, the amount of Precipitable Water Vapor (PWV) was determined by using the tropospheric delays obtained by the Precise Point Positioning (PPP) method and these values were compared with the PWV values obtained from the radiosonde, which is accepted as a reference today. Within the scope of the study, the data of Samsun, Erzurum, Istanbul and Izmir radiosonde stations in Turkey and SAM1, ERZR, ISTN and IZMI CORS-TR stations in their nearby locations for the years 2016-2020 were used. CSRS-PPP service was used to process GNSS data. When the results obtained were examined, it was seen that the PWV values obtained by the two methods were in harmony and mostly showed a similar trend.
References
- Bevis, M., Businger, S., Chiswell, S., Herring, A., Anthes, R., Rocken, C., Ware, R., 1994, “GPS meteorology: Mapping zenith wet delays onto precipitable water”, Journal of Applied Meteorology and Climatology, Cilt 33 , Sayı 3, ss. 379-386, https://doi.org/10.1175/1520-0450(1994)033<0379:GMMZWD>2.0.CO;2
- Bezcioğlu, M., Yiğit, C., & Bodur, M., 2019, “Kinematik PPP-AR ve Geleneksel PPP Yöntemlerin Performanslarının Değerlendirilmesi: Antartika Yarımadası Örneği”, Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt 19, Sayı 1, ss. 162-169, https://doi.org/10.35414/akufemubid.467336.
- Davis, J., Herring, T., Shapiro, I., Rogers A., Elgered G., 1985, “Geodesy by Radio Interferometry: Effects of Atmospheric Modeling Errors on Estimates of Baseline Length”, Radio Science, https://doi.org/10.1029/RS020i006p01593
- Gürbüz G. Akgül V. Görmüş K. S. Kutoğlu Ş. H., 2021, “Assessment of precipitable water vapor over Turkey using GLONASS and GPS”, Journal of Atmospheric and Solar-Terrestrial Physics, Cilt 222 (105712), https://doi.org/10.1016/j.jastp.2021.105712
- Gürbüz G., Jin S., 2017, “Long-time variations of precipitable water vapour estimated from GPS, MODIS and radiosonde observations in Turkey”, International Journal of Climatology, https://doi.org/10.1002/joc.5153
- Gratton P., Banville S., Lachapelle G., O'Keefe K., 2021, “Kinematic Zenith Tropospheric Delay Estimation with GNSS PPP in Mountainous Areas”, Sensors, Cilt 21, Sayı 17, https://doi.org/10.3390/ s21175709
- Li, Z., Muller, J. P., Cross, P., 2003, “Comparison of precipitable water vapor derived from radiosonde, GPS, and Moderate-Resolution Imaging Spectroradiometer measurements”, Journal of Geophysical Research Atmospheres, Cilt 108, 4651, https://doi.org/10.1029/2003JD003372
- Mekik, Ç., Deniz, İ., 2017, “Modelling and validation of the weighted mean temperature for Turkey”, Meteorological Applications, Cilt 24, ss. 92-100, https://doi.org/10.1002/met.1608
- Pang, S., Yeh, T., Honh, J., Chen, C., 2021, “Variability and climatology of precipitable water vapor from 12-year GPS observations in Taiwan”, Advances in Space Research, Cilt 67, Sayı 8, 2333-2346, https://doi.org/10.1016/j.asr.2021.01.021
- Tunalı, E., 2018, “PPP ve IGS Gerçek Zaman Servisi ile Su Buharı Hareketlerinin İzlenmesi”, Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt 18, 017101(343-356), https://dergipark.org.tr/tr/pub/akufemubid/issue/43824/538634.
- Zhao, Q., Yao, Y., Yao, W. Li, Z., 2018, “Real-time precise point positioning-based zenith tropospheric delay for precipitation forecasting”, Scientific Reports, Cilt 8, 7939, https://doi.org/10.1038/s41598-018-26299-3
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Engineering |
| Journal Section | Research Article |
| Authors | |
| Publication Date | December 3, 2022 |
| Submission Date | June 30, 2022 |
| Acceptance Date | August 12, 2022 |
| Published in Issue | Year 2022 |