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RISPotomac River Streamflow Since 1730 as Reconstructed by Tree Rings
Publisher: American Meteorological Society
Abstract: A 248-year reconstruction of the low-flow (July, August and September) period of the Potomac River indicates that the prolonged drought of the 1960s may have been the most severe since 1730. However, there appear to have ...
How Wet and Dry Spells Evolve across the Conterminous United States Based on 555 Years of Paleoclimate Data
Publisher: American Meteorological Society
Abstract: AbstractEvolving patterns of droughts and wet spells in the conterminous United States (CONUS) are examined over 555 years using a tree-ring-based paleoclimate reconstruction of the modified Palmer drought severity index ...
Paleoclimatic Analogs to Twentieth-Century Moisture Regimes Across the United States
Publisher: American Meteorological Society
Abstract: Instrumental Palmer Drought Severity Indexes (PDSI) averaged over the western United States and Great Plains document three major decadal moisture regimes during the twentieth century: the early twentieth-century pluvial, ...
Twentieth-Century Sea Surface Temperature Patterns in the Pacific during Decadal Moisture Regimes over the United States
Publisher: American Meteorological Society
Abstract: Three great moisture anomalies were observed during the twentieth century over the western United States: a pluvial from 1905 to 1917, the Dust Bowl drought (1929?40), and the Southwestern drought of 1946?56. A composite ...
A Well-Verified, Multiproxy Reconstruction of the Winter North Atlantic Oscillation Index since a.d. 1400
Publisher: American Meteorological Society
Abstract: A new, well-verified, multiproxy reconstruction of the winter North Atlantic Oscillation (NAO) index is described that can be used to examine the variability of the NAO prior to twentieth century greenhouse forcing. It ...
North American Droughts of the Last Millennium from a Gridded Network of Tree-Ring Data
Publisher: American Meteorological Society
Abstract: Drought is the most economically expensive recurring natural disaster to strike North America in modern times. Recently available gridded drought reconstructions have been developed for most of North America from a network ...
A New Assessment of Possible Solar and Lunar Forcing of the Bidecadal Drought Rhythm in the Western United States
Publisher: American Meteorological Society
Abstract: A new drought area index (DAI) for the United States has been developed based on a high-quality network of drought reconstructions from tree rings. This DAI is remarkably similar to one developed earlier based on much less ...
Volcanoes and ENSO over the Past Millennium
Publisher: American Meteorological Society
Abstract: The controversial claim that El Niño events might be partially caused by radiative forcing due to volcanic aerosols is reassessed. Building on the work of Mann et al., estimates of volcanic forcing over the past millennium ...
A Multicentury Reconstruction of May Precipitation for the Mid-Atlantic Region Using Juniperus virginiana Tree Rings
Publisher: American Meteorological Society
Abstract: his paper presents a multicentury reconstruction of May precipitation (1200?1997) for the mid-Atlantic region of the United States. The reconstruction is based on the first principal component (PC1) of two millennial-length ...
Pan-Continental Droughts in North America over the Last Millennium
Publisher: American Meteorological Society
Abstract: egional droughts are common in North America, but pan-continental droughts extending across multiple regions, including the 2012 event, are rare relative to single-region events. Here, the tree-ring-derived North American ...