تقرير
أعرض في EDS

Improving Multiday Solar Wind Speed Forecasts

التفاصيل البيبلوغرافية
العنوان: Improving Multiday Solar Wind Speed Forecasts
المؤلفون: H A Elliot, C N Arge, C J Henney, M A Dayeh, G Livadiotis, J.-M Jahn, C E DeForest
المصدر: Space Weather. 20(9)
بيانات النشر: United States: NASA Center for Aerospace Information (CASI), 2022.
سنة النشر: 2022
مصطلحات موضوعية: Meteorology and Climatology
الوصف: We analyze the residual errors for the Wang-Sheeley-Arge (WSA) solar wind speed forecasts as a function of the photospheric magnetic field expansion factor (fp) and the minimum separation angle (d) in the photosphere between the footpoints of open field lines and the nearest coronal hole boundary. We find the map of residual speed errors are systematic when examined as a function of fp and d. We use these residual error maps to apply corrections to the model speeds. We test this correction approach using 3-day lead time speed forecasts for an entire year of observations and model results. Our methods can readily be applied to develop corrections for the remaining WSA forecast lead times which range from 1 to 7 days in 1-day increments. Since the solar wind density, temperature, and the interplanetary magnetic field strength all correlate well with the solar wind speed, the improved accuracy of solar wind speed forecasts enables the production of multiday forecasts of the solar wind density, temperature, pressure, and interplanetary field strength, and geophysical indices. These additional parameters would expand the usefulness of Air Force Data Assimilative Photospheric Flux Transport-WSA forecasts for space weather clients.
نوع الوثيقة: Report
اللغة: English
تدمد: 1542-7390
DOI: 10.1029/2021SW002868
URL الوصول: https://ntrs.nasa.gov/citations/20230001362
ملاحظات: 088026.02.01.01.99

80GSFC18C0014

80NSSC21K0027

80NSSC18K0223

NNX13AI75G

80NSSC19K0079

80NSSC20K0290
رقم الأكسشن: edsnas.20230001362
قاعدة البيانات: NASA Technical Reports
الوصف
تدمد:15427390
DOI:10.1029/2021SW002868