網址:SPDF - OMNIWeb Service
注:OMNI并非特定縮寫,僅表示"多樣化"含義。
About the Data
All the data to which this interface and its multiple underlying interfaces provide access have in common that they are relevant to heliospheric studies and/or provide solar wind input data for studies of solar wind - magnetosphere coupling, and that they are resident at GSFC/Space Physics Data Facility.
Most important among of them are Low and High res. OMNI:
(a) Low res OMNI (LRO) is Hourly "Near-Earth" solar wind magnetic field and plasma data, energetic proton fluxes (>1 to >60 MeV), and geomagnetic and solar activity indices. There are Daily, 27-day, and Yearly resolution derived from hourly data also. All details about that data descriptions and about the data access user may find at?https://omniweb.gsfc.nasa.gov/ow.html.
(b) High 1-min and 5-min resolution OMNI(HRO) : Solar wind magnetic field and plasma data at Earth's Bow Shock Nose, and geomagnetic activity indices. 5-min resolution derived from 1-min data with added 5-min energetic proton fluxes. All details about high res. OMNi data descriptions and about data access user may find at?SPDF - OMNIWeb Service.
In addition, some data sets are as reformatted or have parameters transformed to a different coordinate system to facilitate multi-point heliospheric studies (cf.COHOWeb at?NASA SPDF - COHOWeb).
Most data sets are from specific instruments carried on specific spacecraft and are as provided by spacecraft instrument teams.
"About OMNI data" or equivalent options are available on many of the underlying pages. These have more detail about the data and any processing that may have been done by us.
本界面及其多個底層接口提供訪問的所有數據都具有以下共同特點:它們與日球層研究相關,和/或為研究太陽風-磁層耦合提供太陽風輸入數據,且這些數據均存儲于戈達德太空飛行中心/空間物理數據設施(GSFC/SPDF)。
其中最重要的數據是低分辨率和高分辨率OMNI數據集:
(a) 低分辨率OMNI(LRO):包含每小時"近地"太陽風磁場和等離子體數據、高能質子通量(>1至>60 MeV)以及地磁和太陽活動指數。該數據集還提供由小時數據衍生的日分辨率、27天分辨率和年分辨率數據。用戶可在https://omniweb.gsfc.nasa.gov/ow.html獲取完整的數據描述和訪問方式。
(b) 高分辨率1分鐘和5分鐘OMNI(HRO):包含地球弓激波鼻尖處的太陽風磁場和等離子體數據,以及地磁活動指數。5分鐘分辨率數據由1分鐘數據衍生而來,并增加了5分鐘高能質子通量。高分辨率OMNI數據的完整描述和訪問方式詳見SPDF - OMNIWeb Service。
此外,部分數據集經過重新格式化或坐標系轉換,以促進多點日球層研究(參見NASA SPDF - COHOWeb中的COHOWeb)。
大多數數據集來自特定航天器搭載的專用儀器,并由航天器儀器團隊提供。許多底層頁面提供"關于OMNI數據"或類似選項,其中包含更詳細的數據說明及我們可能進行的任何數據處理。
Important NOTE about OMNI:?
Multiple source high and low res. OMNI data base is not “hard” product, which stay unchanged after it has been made/updated, we try to make quality improvement when the new data (mostly from Wind and ACE spacecraft) became available. Data could be swapping from one source to other as better delayed data becomes available. or one of the sources has been reprocessed by PI's. All details user may find in OMNI description at https://omniweb.gsfc.nasa.gov/html/omni_min_data.html for HRO and https://omniweb.gsfc.nasa.gov/html/ow_data.html for LRO
These doc. files include spacecraft identifiers also.
Note that a discussion of this and underlying interfaces is found at?http://omniweb.gsfc.nasa.gov/html/about_interface.html
Note: OMNI has no special abbreviation, just "variety".
重要說明:
多源高/低分辨率OMNI數據庫并非"固定"產品,在制作/更新后仍可能變更。當我們獲得新數據(主要來自Wind和ACE航天器)時,會嘗試進行質量改進。隨著更優質的延遲數據發布,或原始數據經首席科學家重新處理,數據源可能切換。用戶可在以下鏈接查看完整說明:
高分辨率數據:https://omniweb.gsfc.nasa.gov/html/omni_min_data.html
低分辨率數據:https://omniweb.gsfc.nasa.gov/html/ow_data.html
這些文檔文件同時包含航天器標識信息。
關于本界面及底層接口的討論詳見:http://omniweb.gsfc.nasa.gov/html/about_interface.html