B737-700
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 322
Communication Breakdown
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Rejected Takeoff
ATC Equipment / Nav Facility / Buildings; Procedure
ATIS wind was a slight headwind out of the northwest. Cleared for takeoff and Tower immediately reported wind as 080 at 6 gusting 16 (a tailwind). I asked the Tower to repeat the wind; which they did. I told them we'd like to clear the runway to assess the wind. Once clear; they reported that they have two wind readouts and that one of their sensors was bad. Two other airplanes were used by the Tower to verify the current wind as well as their operative wind sensor and our view of the wind socks which showed the wind to be out of the northwest (a headwind). We essentially taxied down to the first intersection and cleared the runway.
When cleared for takeoff from ZZZ Runway XXL; we were given winds that greatly differed from ATIS winds which matched up to what conditions were when we landed approximately 30 minutes before. Tower cleared us for takeoff and issued winds 080 at 6 gusting to 16. I never advanced power beyond 40% N1; and the Captain; Pilot Monitoring; queried ATC to repeat the winds. The Controller issued the same winds; 080 at 6 gusting 16. ATIS indicated winds 330 at 6 which concurred with the winds upon our previous arrival. Captain took the aircraft and we decided to taxi clear of the runway to evaluate the new winds. Tower cleared us to taxi clear of the runway and taxi back to full length. We cleared XXL; and queried again. Controller indicated a misreading after verifying winds with a Company aircraft and another Carrier aircraft on final approach. Reissued corrected wind reading that agreed with the ATIS and the windsock on XXL. The corrected winds were 330 at 6. We agreed we were safe to takeoff and continued with the takeoff for our flight without issue.This was an issue with the Control Tower and the wind reporting equipment at the time of our departure. We decided to abandon takeoff prior to any measurable airspeed indication and prior to exceeding 40% N1 taxi thrust and clear the runway to reevaluate the conditions in accordance with the AOM (Aircraft Operating Manual.) Once we had concurrence with the Tower between their revised readings on their equipment with a company and other Carrier inbound aircraft; we agreed with the ZZZ Controller that the error was in the reporting equipment on the North complex. They issued a revised reading with which all indications concurred and we continued with a new takeoff. I feel we did everything correctly and did not proceed until we were able to have confidence all conditions were in accordance with our performance numbers.
B737 flight crew reported rejecting takeoff due to conflicting wind information from the tower takeoff clearance.