Consider the following statements:
1. Atmospheric rivers have shifted 6 to 10 degrees poleward over the past 40 years, primarily due to changes in sea surface temperatures.
2. The strengthening of the Walker circulation over the western Pacific is responsible for redirecting atmospheric rivers toward the poles.
3. Atmospheric rivers are primarily harmful as they lead to increased flooding and landslides, with minimal positive impacts on water resources.
Which of the statements given above is/are correct?