To answer this question, we need to compare the NARR (North American Regional Reanalysis) estimates of mean annual precipitation for each city (Phoenix, Olympia, Atlanta) with the values reported on the US Climate Data website (using the first entry for each city). Since you haven't provided the actual precipitation values from NARR or the US Climate Data website for these cities, I can use typical values and general knowledge: ### Typical Mean Annual Precipitation (inches): | City | NARR Estimate (approx.) | US Climate Data (approx.) | |----------|-------------------------|---------------------------| | Phoenix | ~8 | ~8 | | Olympia | ~50 | ~50 | | Atlanta | ~55 | ~50 | However, in many geography and climatology exercises, **NARR tends to overestimate precipitation in the Southeast US (like Atlanta)** and can underestimate it in the arid Southwest (like Phoenix), but the discrepancy is usually most noticeable for **Olympia, Washington** because of the region's complex topography and rain shadow effects, which reanalysis models often struggle to capture. ### Commonly Observed Discrepancies: - **Phoenix:** Both datasets report low values, discrepancies are usually small. - **Olympia:** NARR often underestimates the very high rainfall compared to station data reported on US Climate Data. - **Atlanta:** Moderate discrepancy, but not as large as Olympia. ### **Answer** **b) Olympia** **Explanation:** Olympia typically shows the largest discrepancy between NARR estimates and US Climate Data mean annual precipitation values, due to the challenges of modeling precipitation in the Pacific Northwest's complex terrain. If you have specific values from your table or data, please provide them for a more precise calculation!