Original sentence: Among the usual variations in other regions, research has found various events during these time periods, but most are not as dramatic nor at the same time.IPCC reports dispute the view that the LIA was prominent or global IPCC-TAR, and versions of the reconstruction of the temperature record of the past 1000 years in the Northern Hemisphere  do not show a pronounced period of cooling.It is now clear that northwestern Europe had a regional cold event during this period.The IPCC describes the LIA as a modest cooling of the Northern Hemisphere during this period of less than 1°C, and says current evidence does not support globally synchronous periods of anomalous cold or warmth over this timeframe, and the conventional terms of "Little Ice Age" and "Medieval Warm Period" appear to have limited utility in describing trends in hemispheric or global mean temperature changes in past centuries.The LIA was first studied in Europe, and was initially believed to be a global phenomenon.for more on this
Edited sentence: For example, some versions of the reconstruction of the temperature record of the past 1000 years in the northern hemisphere  do not show a pronounced period of cooling.It is now less clear that this is true based on evidence about past temperature trends from IPCC-TAR.It was initially believed that the LIA was a global phenomenon.Little Ice Age.Medieval Warm Period.See Medieval climate optimum for more on this.The IPCC, based on Bradley and Jones, 1993; Hughes and Diaz, 1994; Crowley and Lowery, 2000 describes the LIA as a modest cooling of the Northern Hemisphere during this period of less than 1°C, and says current evidence does not support globally synchronous periods of anomalous cold or warmth over this timeframe, and the conventional terms of.appear to have limited utility in describing trends in hemispheric or global mean temperature changes in past centuries