Oklahoma Study Terrain (IMAGE) Duke University Caption By including sharp contrasts in land features on small scales, a new study focusing on a 100x100 km box (shown here) improved the accuracy of weather and climate predictions. Credit Nate Chaney, Duke University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.