{"product_id":"2940148352105","title":"DEVELOPMENT AND APPLICATION OF DOWNSCALED HYDROCLIMATIC PREDICTOR VARIABLES FOR USE IN CLIMATE VULNERABILITY AND ASSESSMENT STUDIES","description":"This paper outlines the production of 270 meter grid‐scale maps for 14 climate and derivative \u003cbr\u003ehydrologic variables for a region that encompasses the State of California and all the streams \u003cbr\u003ethat flow into it. The paper describes the Basin Characterization Model (BCM), a map‐based, \u003cbr\u003emechanistic model used to process the hydrological variables. Three historic and three future \u003cbr\u003etime periods of 30 years (1911–1940, 1941–1970, 1971–2000, 2010–2039, 2040–2069, and 2070–\u003cbr\u003e2099) were developed that summarize 180 years of monthly  historic and future climate values. \u003cbr\u003eThese comprise a standardized set of fine‐scale climate data that were shared with 14 research \u003cbr\u003egroups, including the U.S. National Park Service and several University of California groups as \u003cbr\u003epart of this project. The paper presents three analyses done with the outputs from the Basin \u003cbr\u003eCharacterization Model: trends in hydrologic variables over baseline, the most recent 30‐year \u003cbr\u003eperiod; a calibration and validation effort that uses measured discharge values from 139 \u003cbr\u003estreamgages and compares those to Basin Characterization Model‐derived projections of \u003cbr\u003edischarge for the same basins; and an assessment of the trends of specific hydrological variables \u003cbr\u003ethat links historical trend to projected future change under four future climate projections. \u003cbr\u003eOverall, increases in potential evapotranspiration dominate other influences in future \u003cbr\u003ehydrologic cycles. Increased potential evapotranspiration drives decreasing runoff even under \u003cbr\u003eforecasts with increased precipitation, and drives increased climatic water deficit, which may \u003cbr\u003elead to conversion of dominant vegetation types across large parts of the study region, as well \u003cbr\u003eas have implications for rain‐fed agriculture. The potential evapotranspiration is driven by air \u003cbr\u003etemperatures, and the Basin Characterization Model permits it to be integrated with a water \u003cbr\u003ebalance model that can be derived for landscapes and summarized by watershed. These results \u003cbr\u003eshow the utility of using a process‐based model with modules representing different \u003cbr\u003ehydrological pathways that can be interlinked.  \u003cbr\u003e","brand":"ReadCycle","offers":[{"title":"Default Title","offer_id":47111141720304,"sku":"2940148352105","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940148352105_p0.jpg?v=1763701815","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940148352105","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}