1. They are extremely important to working on climate variability and understanding climate change. 2. Bradley's interests include climate variability and change. 3. His research is concerned with global climate change, climate variability , and atmospheric chemistry. 4. The fingerprint of global warming is beginning to emerge from the noise of natural climate variability . 5. Policy Statement on Climate Variability and Change by the American Association of State Climatologists ( AASC) 6. Historical climatic records are now sufficiently reliable to profile climate variability taking into account expectations for regions. 7. Her research and international / national committee work include a focus on ocean climate variability / change. 8. She has published over 200 pieces of research on the topic of climate change and climate variability . 9. It records data with minimal time dependent biases affecting the interpretation of decadal to centennial climate variability and change. 10. Also unknown are the actual levels of natural climate variability and greenhouse gas accumulation that will be reached this century.