ACR MLG HARD LNDG BY NEW FO.

Narrative

FLYING MLG. F/O'S LEG. NEW F/O ON AIRPLANE (APPROX 1 MONTH). WE HAD PREVIOUSLY DISCUSSED THE NEED FOR KEEPING MORE AIRSPD ON SHORT FINAL AS AN MLG WILL TEND TO FALL OUT FROM UNDER YOU IF YOU ARE CLOSE TO BUG SPD. AT APPROX 600' AGL THE AIRSPD INCREASED SOMEWHAT (SMOOTHLY TO BUG + 25) AND THEN DECREASED BACK TO BUG + 10. THERE WAS NO WIND SHEAR WARNING FROM THE TWR. AT APPROX 100' AGL BUG + 10; AS WE DSNDED; AIRSPD WENT TO BUG AT APPROX 50' AGL AND I GRABBED THROTTLES AND ADDED MAX PWR AS THE AIRPLANE HAD STARTED TO SETTLE. WE CONTACTED THE RWY FIRMLY AND BOUNCED (TWR LATER ESTIMATED 15-20' IN AIR). RATHER THAN ATTEMPT TO PUT PLANE BACK ON RWY; WE ELECTED TO GO AROUND. WHILE IN CLBOUT TWR RPTED WIND SHEAR ALERT. LNDG WAS MADE BY ME ON SECOND APCH. RAMP SVCMAN LATER TOLD ME; JUST BEFORE OUR FIRST ATTEMPT; THE FLAGS ON TERMINAL BLDG SWITCHED POS INDICATING A CHANGE IN DIRECTION OF WIND. RPTED BOUNCE TO CHIEF PLT; DISPATCH; CHIEF DISPATCHER AND TECHNICAL SVCS. MAINT DID A HARD LNDG INSPECTION AND NO DAMAGE WAS FOUND. ATIS E60 BROKEN 25 BROKEN 15; 60 DEGS 34 DEGS 290 DEGS 17 29.53; VISUAL TO 29.