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Relational Metrics to Evaluate Chemistry-Transport and Chemistry-Climate Models

评估化学-输运和化学-气候模型的关系度量

基本信息

批准号：
2135749
负责人：
Michael Prather
金额：
$ 61.61万
依托单位：
University of California-Irvine
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2022
资助国家：
美国
起止时间：
2022-02-15 至 2025-01-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2135749&HistoricalAwards=false
关键词：
Relational Metrics Evaluate Chemistry Transport

项目摘要

This project will develop observation-based metrics for evaluating global atmospheric chemistry models. This suite of metrics will assist with climate model development and planning for the next chemistry Model Intercomparison Project (MIP) for the 7th IPCC assessment. This effort will document the development and improvements occurring in next-generation models and the traceability of confidence in policy-relevant model projections. A new or revised set of metrics focused on gas-phase chemistry will be developed involving high-order metrics (e.g., reaction rates, budgets, statistics, covariance of species) and/or relationships (e.g., budgets vs. perturbations, seasonal/interannual patterns in transport). Chemical transport models (CTM) at the University of California at Irvine and MIP archives will be used to draft the metrics. Scientific issues to be addressed include: (1) heterogeneity in chemical composition; (2) chemical budgets of tropospheric O3 and CH4; (3) CH4 chemistry feedback and O3 sensitivities; (4) tropospheric humidity, an emergent constraint; (5) N2O from the stratosphere to the surface; (6) stratospheric column ozone; (7) tropospheric column ozone and air mass; (8) photolysis rates and emergent constraints; and (9) surface O3, an air quality metric.A graduate student will participate in the design, testing, and documentation of the metrics.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将开发基于观测的指标来评估全球大气化学模型。这套指标将有助于气候模型的开发和第七次 IPCC 评估的下一个化学模型比对项目 (MIP) 的规划。这项工作将记录下一代模型的开发和改进以及政策相关模型预测信心的可追溯性。将开发一套新的或修订的专注于气相化学的指标，涉及高阶指标（例如反应速率、预算、统计、物种协方差）和/或关系（例如预算与扰动、运输中的季节性/年际模式）。加州大学欧文分校的化学品运输模型 (CTM) 和 MIP 档案馆将用于起草指标。需要解决的科学问题包括：（1）化学成分的异质性； (2) 对流层O3和CH4的化学收支； (3) CH4化学反馈和O3敏感性； (4) 对流层湿度，一个紧急约束； (5) N2O从平流层到地表； (6) 平流层臭氧柱； (7) 对流层臭氧柱和气团； (8) 光解速率和应急约束； (9) 表面 O3，一种空气质量指标。研究生将参与指标的设计、测试和记录。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。