Introduction to the Gap Analysis discussion CGMS-41, WG III July 2013 Jérôme LAFEUILLE (WMO) WMO; OBS/SAT

CGMS baseline for operational/sustained missions  Advanced VIS/IR imagery )6 GEO locations  IR Sounding (some hyperspectral) )6 GEO locations  Lightning detection )6 GEO locations  Space Environment Monitoring )6 GEO locations  ERB, UV sounding, Solar activity some GEO locations  Multispectral VIS/IR imagery )  IR hyper-spectral sounders )a.m., p.m., e.m  MW sounders )  MW imagers – some polarimetric )  Scatterometers 2 orbital planes  Altimeter constellation am,pm +reference mission  Radio occultation (>10,000 occ./day)am, pm + constellation  Broadband Vis/IR radiometer a.m., p.m  Narrow-band (oc colour, veg, aerolol)a.m.  High Res Vis/IRa.m. constellation  IT dual angle view imagerya.m.  Particle detection, Magnetic field a.m., p.m  Solar monitoringat least two 

 LEO / early morning : anticipated gap after DMSP expected deployment of a FY-3 satellite  LEO / p.m. orbit : risk of gap between SNPP and JPSS  GEO: South America coverage after GOES-12  LEO/ERB: to be confirmed (FY3/ERM, JPSS/CERES)  Atmospheric composition: limb sounding ?  Radio-occultation: threats on COSMIC-2 funding (late 2015 & 2018) Other «gaps» raised by WMO Exec.Council (See WP14)  GPM follow-on  GEO hyperspectral sounding  Space Weather Gaps with respect to the CGMS baseline

Contribution of current COSMIC RO constellation between occultations/day

satellites equatorial orbits satellites polar orbits ~ 12,000 profiles/day ~ 1,300 profiles/day Courtesy of UCAR

To be discussed by WG III  Updating and assessing the list of main risks  Discuss actions/recommendations to mitigate the risk:  Advocacy for no-gap planning  Alternative mission planning  Improved access to or use of, existing/planned alternative sources  Communication to users  ….