1 / 15

Operational solar irradiances for MURI

Operational solar irradiances for MURI. MURI Workshop October 21-22, 2008 W. Kent Tobiska 1-310-573-4185 ktobiska@spacenvironment.net Space Environment Technologies. Overview.

cosima
Download Presentation

Operational solar irradiances for MURI

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Operational solar irradiances for MURI MURI Workshop October 21-22, 2008 W. Kent Tobiska 1-310-573-4185 ktobiska@spacenvironment.net Space Environment Technologies

  2. Overview • JB2008 solar indices contributions to nighttime minimum exospheric temperature from daily change relative to 81-day value • S10 (74.1%) - created by SET/APEX from SOHO SEM 26-34 nm bandpass and used with 1-day lag • M10 (10.2%) - created by SET/S2KOPS from NOAA 16/17, SORCE, GOME MgII cwr and used with 2-day lag • F10 (9.8%) - observed by Penticton and used with 1-day lag • Y10 (5.8%) - created by SET/S2KOPS from MgII/Lyman-alpha/GOES XRS and used with 5-day lag • Other solar datasets and models

  3. JB2008 websitehttp://sol.spacenvironment.net/~JB2008/

  4. The JB2008 solar indices

  5. The JB2008 solar indices F10 Max = 284.500 Min = 65.0000 Mean = 122.429 +/- 47.5474 1-sigma Ratio max:min = 4.37692 S10 Max = 235.400 Min = 56.3000 Mean = 122.191 +/- 45.4857 1-sigma Ratio max:min = 4.18117 M10 Max = 243.400 Min = 60.1000 Mean = 121.046 +/- 44.0598 1-sigma Ratio max:min = 4.04992 Y10 Max = 195.020 Min = 45.8300 Mean = 104.612 +/- 36.4647 1-sigma Ratio max:min = 4.25529

  6. MgII Lya Altitude of unit optical depth for UV absorption Ehrt Esrc Xb10 & Lya Seuv Motivation for new Y10 solar index … capture the X-ray & Ly absorption in lower thermosphere

  7. Creating Y10: start with GOES 0.1-0.8 nm soft X-rays

  8. Separate background (Xb10 = X10) and flare (Xhf) indices

  9. Make solar cycle adjustment to Lyman-alpha (~L10)

  10. Form SET Lyman-alpha composite

  11. Combine L10 and X10 to form Y10 L10, X10, Y10

  12. The formation of Y10 • L10 is the SET composite Lyman-alpha FUV emission reported in sfu units after linear regression with F10 • X10 is the SET Xb10 X-ray background component reported in sfu units after linear regression with F10 • F81norm is the normalized 81-day smooth of F10 • Y10 = F81norm*(X10) + (1-F81norm)*(L10)

  13. The result – JB2008 densities

  14. Existing data links for SET data products and those of other organizations using coupled solar irradianceshttp://spacewx.com Products quicklink

  15. Solar Irradiance Platform v2.34 SIP PG provides historical, nowcast, and operational forecast XUV-UV variability in several spectral and proxy formats, including JB2006/JB2008 indices, using the IDL Virtual Machine that runs on any platformSIP SY provides callable IDL routine for MURI models

More Related