AN ACR MLG MADE A HIGH SPD ABORT DUE TO UNRPTED WIND SHEAR.

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HIGH SPD ABORT RWY 32; ANCHORAGE IAP; MLG. ATIS RPTED WINDS 270/6. MATCHED TKOF WIND JUST PRIOR TO DEP ROLL. ACFT ACCELERATED SLIGHTLY SLOWER THAN NORMAL; BUT NOT UNUSUALLY SLOW (SPRING TEMPS). AT 80 KIAS; AIRSPD MOMENTARILY HESITATED; THEN CONTINUED TO CLB. AT 120 KIAS; AIRSPD STAGNATED FOR APPROX 1000 FT OF TKOF ROLL. I SUSPECTED A WIND SHEAR CONDITION AND CONSIDERED AN ABORT; WHEN THE AIRSPD BEGAN TO INCREASE AGAIN. V-SPDS WERE V1-148; VR-150; V2-157 FOR FLAPS 1. AT APPROX 140 KIAS; AIRSPD ABRUPTLY DECREASED BY 15 KIAS AND WAS NEARLY 1000 FT BEYOND MY NORMAL ROTATION POINT FOR THIS GROSS WT. I HAD NEARLY 4000 FT REMAINING RWY AND WAS CONFIDENT I COULD STOP THE ACFT IN THE REMAINING RWY; BUT WAS NOT CONFIDENT THAT SHOULD I CONTINUE THE TKOF; THAT POSSIBLY STRONGER TAILWINDS DURING SECOND SEGMENT WERE ABSENT. THEREFORE; I ABORTED USING ESTABLISHED COMPANY PROCS. TWR NOTIFIED; CLRED THE RWY. ARPT SAFETY VISUALLY CHKED FOR TIRE DAMAGE OR FIRE. NONE NOTED; TAXIED TO GATE. 3 TIRES WERE LATER CHANGED FOR SUSPECTED FUSE PLUG OVERTEMP AND 1 BRAKE CHANGED DUE TO WEAR BEYOND LIMITS. AS WE TAXIED BACK; NOTED THAT WINDSOCK WAS INDICATING A STRONG S WIND. RECOMMENDED TO TWR NO MORE DEPS ON RWY 32 DUE TO WIND SHEAR. NEXT ACFT ON RWY 24 NOTED A 15 KT AIRSPD LOSS AFTER TKOF. I DON'T KNOW WHAT WOULD HAVE HAPPENED AFTER WE HAD TAKEN OFF; BUT I CAN SAY THAT EXCELLENT COMPANY SIMULATOR WIND SHEAR TRAINING PAID OFF. ABORT WAS EXCITING; BUT 'AUTOMATIC.' FO REMARKED; 'I HAVE NEVER SEEN THE AIRSPD DO THAT ON RWY 32.' THAT'S WHY WE ABORTED; NEITHER HAD I WITH NEARLY 2000 TKOFS IN VARIOUS ACFT FROM THAT RWY. NO VIRGA OR LOW-LEVEL WIND SHEAR HAD BEEN RPTED. IT JUST SEEMED TO BE A SUDDEN CHANGE IN WIND SPD AND DIRECTION. DRY RWY.