Werner Schmutz, PMOD/WRC Status of the space weather experiments LYRA/PROBA2 and PREMOS/PICARD PMOD/WRC COST 724 project: Short-term variability of the solar UV irradiance and its effects on the stratosphere and mesosphere COST 724 MC meeting, Sofia May 2007

Overview Status & Schedule Brief overview LYRA/PROBA2 (shown previously) Brief overview PREMOS/PICRAD Application for Space Weather: Now-cast and short-term forecast of ozone in the middle atmosphere

Summary (Status as of Antalya ) SWAP (0.1 Hz) + LYRA (60 Hz) on PROBA2 provide the EUV equivalent in Europe of the NOAA SXI + GOES X-ray monitor  SODISM + PREMOS on PICARD will continue in the near UV and visual  2008/

Summary (Status as of today ) SWAP (0.1 Hz) + LYRA (60 Hz) on PROBA2 provide the EUV equivalent in Europe of the NOAA SXI + GOES X-ray monitor  SODISM + PREMOS on PICARD will continue in the near UV and visual 

Future PMOD/WRC Irradiance Measurements C. Fröhlich et al.SOVIM/ISS 2007(?) J.-F. Hochedez et al.LYRA/PROBA W. Schmutz et al. PREMOS/PICARD

Future PMOD/WRC Irradiance Measurements today TSI & optical UV & FUV TSI & UV & optical

Filter Radiometers: LYRA/PROBA2 (launch 2008) PREMOS-PFR/PICARD (launch 2009) 215 LYRA: 10 (Zr), 30 (Al), 125,215 nm 215 PREMOS: 215, 268, 535, 607, 782 nm

PICARD PREMOS – SOVAP – SODISM Total Solar Irradiance Filter Radiometers

LYRA –UV radiometer –PI: JF Hochedez –LYRA.oma.be SWAP –EUV imager at 17.5 nm –PIs: D Berghmans & JM Defise –SWAP.oma.be Sun PROBA2: Two solar instruments

LYRA 3 units 12 detectors 24 LEDs … x 92.5 x mm ~A4 size 5.0 kg 1 unit = 4 wavelength channels

Filter & detector response VUV tests and calibrations made at the Berlin Electron Storage Ring (BESSY) courtesy to ROB, MPS & PTB (Physikalisch- Technische Bundesanstalt) 30 nm 10 nm Ly  200 nm

UV influence on the terrestrial atmosphere Ozone mixing ratio changes (%) due to a 10% increase of the spectral solar flux in 1 wavelength bin (1 nm). Ozone Herzberg band 210 nm Ozone band 270 nm Ly  30 km: level of max. ozone change

Evaluate the response of the middle atmosphere to the solar UV irradiance variability LYRA Instrument on PROBA2 (built by PMOD/WRC) Chemistry ionosphere climate model (CICM) extension of CCM SOCOL (Egorova et al.,2005) Nowcast and short-term forecast of the neutral and ionic composition of the middle atmosphere Statistical tools for nowcast and short-term forecast of the solar irradiance On-line LYRA data for space-weather community  monitoring 30 Hz COST 724 project idea PREMOS Instrument on PICARD (built by PMOD/WRC) Input from other WPs

LYRA measurements: 6-hourly solar irradiance at nm (Lyman-) nm (Herzberg cont.) Spectral irradiance for other wavelengths Measurements of previous month Statistical tools Spectral solar irradiance on model spectral grid for the next 6 hours Data flow Input from other WPs Input from other WPs?

SOCOL : modeling tool to study SOlar-Climate-Ozone Links General Circulation component (GCM): MA-ECHAM4 (Manzini & McFarlane,1998) Chemistry/transport component (CTM) : MEZON (Egorova et al., 2003) GCM CTM Winds and temperature H 2 O (troposphere) Ozone H 2 O(stratosphere) Main properties: ~4ºx4º (T30); L ~90 km Included all relevant physical, dynamical and chemical processes Simulates wind, temperature, 43 neutral and 48 charged species CICM SOCOL

Spectral solar irradiance on model spectral grid for the next 6 hours Initial fields for 10 ensemble members 10-member model ensemble run for the next 6 hours Model output for the next 6 hours Initialization fields for the next period Experimental setup

Mixing ratio of the neutral species and electrons, negative and positive ion density for the 6 hour period after the last LYRA measurement and their statistical properties O +, O 2 +, O 4 +, N +, NO +, N 2 +, H 2 O 2 +, H 3 O +,O 2 + ∙N 2, O 2 + ∙H 2 O, H 3 O + ∙OH, NO + ∙H 2 O, NO + ∙(H 2 O) 2, NO + ∙(H 2 O) 3, NO + ∙CO 2, NO + ∙N 2, NO + ∙H 2 O∙CO 2, NO + ∙H 2 O∙N 2, NO + ∙(H 2 O) 2 ∙CO 2, NO + ∙(H 2 O) 2 ∙N 2, H + ∙(H 2 O) 2, H + ∙(H 2 O) 3, H + ∙(H 2 O) 4, H + ∙(H 2 O) 5, H + ∙(H 2 O) 6, H + ∙(H 2 O) 7, H 3 O + ∙CO 2, H 3 O + ∙N 2, H + ∙(H 2 O) 2 ∙CO 2, H + ∙(H 2 O) 2 ∙N 2 e¯,O¯, O 2 ¯, O 3 ¯, O 4 ¯, OH¯, CO 3 ¯, CO 4 ¯, NO 2 ¯, NO 3 ¯, HCO 3 ¯, ClO¯, Cl¯, CH 3 ¯,O 2 ¯∙H 2 O, NO 3 ¯∙H 2 O, CO 3 ¯∙H 2 O O 3, O *, O, O 2 *, NO, HO 2, ClO, NO 2, OH, NO 3, N 2 O 5, HNO 3,HONO 3, ClONO 2, Cl, N, N *, H 2 O 2, H, HOCl, Cl 2, Cl 2 O 2, HCl,Br, CH 2 O, BrO, HBr, HOBr, BrNO 3, BrCl, CH 3, CH 3 O 2, CH 3 O, HCO, CH 3 O 2 H, H 2 O, CFC-11, CFC-12, N 2 O, CH 4, CO, H 2, CBrF 3 Output data

Positive ions Negative ions and electrons Neutrals Graphs: Exp1-Exp2 1)Solar maximum with GCR at min + NO ionization 2)Solar minimum control with GCR at max + NO ionization Model sensitivity to the changes of the solar spectral irradiance from minimum to the maximum of the solar activity

SUSIM data SOCOLcalculations Microwave Radiometer SOMORA : Data provided by Bern University Group of N.Kämpfer Red: Ly-alpha Blue: Herzberg (scaled) Comparison 3D simulation and observations: signal of 27-day solar cycle in ozone

Thank you for your attention! Integration of LYRA on PROBA Silvio Koller LYRA PM