DISPATCHER COMPLAINS OF INACCURATE ASOS RPTS AT MEM.

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ON JAN/XA/00 I WORKED XA30 TO XH00 JAN/TUE/00. ACFT DISPATCHED FOR ACR. I DISPATCHED TO MEM. DURING NIGHT MEM FORECAST CLR VISIBILITY 6+M MI. RPTED TEMP/DEWPOINTS: XB05Z +8 DEGS -7 DEGS C; XB06Z +9 DEGS -8 DEGS C; XB07Z +8 DEGS -7 DEGS C; XB08Z +8 DEGS -7 DEGS C; XB09Z +8 DEGS -5 DEGS C; XB10Z +9 DEGS -1 DEG C; XB11Z +9 DEGS -0 DEGS C WITH 6 OVCST. BOTH NATIONAL WX SVC AND ACR METRO FORECAST BLOWN. I AMENDED FUEL/ALTERNATES ON 23 FLTS INBOUND TO MEM. ONE AS HE TAXIED FOR TKOF. THE FLOW WAS ASOS WX RPTING HAS NO MONITOR CTL. THE DEWPOINTS FOR MEM WERE BOGUS. DISPATCHERS -- AT LEAST THIS ONE -- MONITOR FORECASTS BY FOLLOWING TRENDS AT FORECAST STATIONS. I WATCH TEMP/DEWPOINT SPREADS. SURFACE WINDS; WINDS ALOFT; I HAD NO SPREAD AND FOG ALONG GULF COAST GPT; BTR; MSY AND WAS CONCERNED THAT MOISTURE COULD EFFECT MEM. THE TEMP/DEWPOINT FALSE RPTING ALLOWED LOW SCUD TO MOVE INTO MEM WITHOUT WARNING. SOLUTION: FIND A WAY TECHNICALLY TO MONITOR ITEMS IN ASOS WX RPTING TO ALLOW THE USER TO KNOW IF HE IS GETTING A FALSE/BOGUS RPT. THIS IS THIRD WORLD TECHNOLOGY BEING IMPOSED ON THE AVIATION COMMUNITY. IS SAFETY OF FLT A FACTOR? I THINK SO. SHALL WE PAY THE PRICE TO CORRECT ASOS FLAWS? I HOPE SO.