Comparison of three retrievals of COSMIC GPS radio occultation results in the tropical upper troposphere and lower stratosphere
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- Material Type
- 記事
- Author/Editor
- NoersomadiToshitaka Tsuda
- Publication, Distribution, etc.
- Publication Date
- 2017-09-11
- Publication Date (W3CDTF)
- 2017-09-11
- Periodical title
- EPS : Earth, Planets and Space
- No. or year of volume/issue
- 69(125)
- Volume
- 69(125)
- ISSN (Periodical Title)
- 1880-5981
- ISSN-L (Periodical Title)
- 1343-8832
- Text Language Code
- eng
- DOI
- 10.1186/s40623-017-0710-7
- Persistent ID (NDL)
- info:ndljp/pid/10953853
- Collection
- Collection (Materials For Handicapped People:1)
- Collection (particular)
- 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他
- Acquisition Basis
- オンライン資料収集制度
- Date Accepted (W3CDTF)
- 2017-09-14T21:01:06+09:00
- Date Captured (W3CDTF)
- 2017-09-14
- Format (IMT)
- application/pdf
- Access Restrictions
- 国立国会図書館内限定公開
- Service for the Digitized Contents Transmission Service
- 図書館・個人送信対象外
- Availability of remote photoduplication service
- 可
- Periodical Title (URI)
- Periodical Title (Persistent ID (NDL))
- info:ndljp/pid/10319651
- Data Provider (Database)
- 国立国会図書館 : 国立国会図書館デジタルコレクション
- Summary, etc.
- Combining geometrical optics (GO) and wave optics (WO), the COSMIC data analysis and archive center (CDAAC) retrieved two sets of dry atmosphere temperatures (T) from COSMIC GPS radio occultation (GPS-RO), which are called atmPrf2010 and atmPrf2013. In atmPrf2010, the sewing height between WO and GO varies between 10 and 20 km, but is fixed at 20 km for atmPrf2013. The height resolution of the atmPrf2010 depends on the sewing height, while the T profiles by atmPrf2013 are smoothed over 500 m. We also derived T by applying WO throughout the troposphere and the stratosphere up to a 30-km altitude, which is called rishfsi2013. The three retrievals have different characteristics in the height resolution around the tropopause. Therefore, we aim to examine a possible discrepancy in the statistical results of the cold-point tropopause (CPT) and the lapse rate tropopause (LRT) among the three datasets, conducting their inter-comparisons as well as the comparison between GPS-RO and the simultaneous radiosonde dataset. We investigate the T variations in the upper troposphere and lower stratosphere (UTLS) over the tropics from October 1, 2011, to March 31, 2012, when radiosonde soundings were conducted as the CINDY-DYNAMO 2011 campaign. The mean T profiles are consistent between atmPrf2010 and atmPrf2013, but rishfsi2013 results are colder (warmer) than the CDAAC retrievals below (above) the tropopause. The mean T difference between atmPrf2013 and atmPrf2010 is 0.17 K at the cold-point tropopause (CPT) and −0.38 K at the lapse rate tropopause (LRT). On the other hand, rishfsi2013 shows a colder T at CPT by −0.77 and −0.59 K relative to atmPrf2013 and atmPrf2010, respectively, and the warmer T by 0.60 and 0.20 Kd at LRT. During CINDY-DYNAMO, we found 134 radiosonde soundings that coincide with GPS-RO within ±3 h and are collocated within 200 km from GPS-RO. The mean T difference at CPT from the radiosondes is 0.32, 0.49 and −0.24 K for atmPrf2010, atmPrf2013 and rishfsi2013, respectively. Both atmPrf2013 and atmPrf2010 have a positive bias at CPT, while rishfsi2013 has a negative one. Similar comparisons at LRT are −0.45, −0.69 and −0.41 K, respectively, showing a negative bias for all GPS-RO retrievals. The results show that rishfsi2013 is consistent with the retrievals at CDAAC and the radiosondes. Due to its good height resolution, rishfsi2013 is useful for studies on mesoscale T perturbations in the UTLS.
- DOI
- 10.1186/s40623-017-0710-7
- Access Restrictions
- インターネット公開
- Rights (production)
- © The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Related Material (URI)
- Is Referenced By
- Coordinated Upper-troposphere-to-stratosphere Balloon Experiment in Biak (CUBE/Biak)Influence of ENSO and MJO on the zonal structure of tropical tropopause inversion layer using high-resolution temperature profiles retrieved from COSMIC GPS Radio OccultationTropical Temperature Variability in the UTLS: New Insights from GPS Radio Occultation Observations
- References
- Analysis of vertical wave number spectrum of atmospheric gravity waves in the stratosphere using COSMIC GPS radio occultation dataObserving Earth's atmosphere with radio occultation measurements using the Global Positioning SystemQuantifying uncertainty in climatological fields from GPS radio occultation: an empirical-analytical error modelExploring Earth's atmosphere with radio occultation: contributions to weather, climate and space weatherRepresentativeness errors for radiosonde observationsOptimal Noise Filtering for the Ionospheric Correction of GPS Radio Occultation SignalsTropical Cold-Point Tropopause: Climatology, Seasonal Cycle, and Intraseasonal Variability Derived from COSMIC GPS Radio Occultation MeasurementsGlobal distribution of atmospheric waves in the equatorial upper troposphere and lower stratosphere: COSMIC observations of wave mean flow interactionsGeometrical optics phase matching of radio occultation signalsFull Spectrum Inversion of radio occultation signalsOn the uncertainty of radio occultation inversions in the lower troposphereComparing radiosonde and COSMIC atmospheric profile data to quantify differences among radiosonde types and the effects of imperfect collocation on comparison statisticsThe occurrence of cirrus clouds associated with eastward propagating equatorial <i>n</i> = 0 inertio‐gravity and Kelvin waves in November 2011 during the CINDY2011/DYNAMO campaignCracking the MJO nutAnalysis of wave fields by Fourier integral operators and their application for radio occultationsAssessment of COSMIC radio occultation retrieval product using global radiosonde dataIonospheric correction of GPS radio occultation data in the troposphereComparison of GPS radio occultation soundings with radiosondesValidation of FORMOSAT-3/COSMIC level 2 "atmPrf" global temperature data in the stratosphereTropical tropopause layerAnalysis of GPS radio occultation data from the FORMOSAT-3/COSMIC and Metop/GRAS missions at CDAACThe COSMIC/FORMOSAT-3 Mission: Early ResultsReconstruction of internal gravity wave parameters from radio occultation retrievals of vertical temperature profiles in the Earth's atmosphereGPS Sounding of the Atmosphere from Low Earth Orbit: Preliminary ResultsUse of the L2C signal for inversions of GPS radio occultation data in the neutral atmosphereGlobal multiple tropopause features derived from COSMIC radio occultation data during 2007 to 2012Tracking Pulses of the Madden–Julian OscillationClimate intercomparison of GPS radio occultation, RS90/92 radiosondes and GRUAN from 2002 to 2013GPS radio occultation for climate monitoring and change detectionTHE EXTRATROPICAL UPPER TROPOSPHERE AND LOWER STRATOSPHERECanonical transform method for processing radio occultation data in the lower troposphereOn the variability of temperature profiles in the stratosphere: Implications for validationTropical temperature variability and Kelvin-wave activity in the UTLS from GPS RO measurementsInversion and Error Estimation of GPS Radio Occultation Data (3.Application of GPS Data to Atmospheric Science)
- Data Provider (Database)
- 国立情報学研究所 : CiNii Research
- Original Data Provider (Database)
- 学術機関リポジトリデータベース雑誌記事索引データベースCrossrefCiNii Articles科学研究費助成事業データベースCrossrefCrossrefCrossref
- Bibliographic ID (NDL)
- 10953853
- NAID
- 120006364091