DATA ANALYSIS AND MODELING STUDIES REVEAL LARGE UNCERTAINTIES IN CHANGES IN THE UPPER TROPOSPHERIC/LOWER ST…

Assistance award details

Assistance award identifier

ASST_NON_80NSSC18K0053_080

FAIN

80NSSC18K0053

Recipient

NORTHWEST RESEARCH ASSOCIATES, INC.

Awarding agency

National Aeronautics and Space Administration

Funding agency

National Aeronautics and Space Administration

Assistance listing (CFDA)

43.001

Total obligated

$33,917

Period

— – —

Fiscal year

2018

Place of performance state

WA

Source file

FY2018_All_Assistance_Full_20261006.zip

Description

DATA ANALYSIS AND MODELING STUDIES REVEAL LARGE UNCERTAINTIES IN CHANGES IN THE UPPER TROPOSPHERIC/LOWER STRATOSPHERIC (UTLS) JETS AND THE TROPOPAUSE. THE RELATIONSHIP OF THE UTLS JETS AND THE TROPOPAUSE TO TRACE GAS DISTRIBUTIONS IS CRITICAL TO ASSESSING THE COMPOSITION OF THE UTLS AND ITS RADIATIVE IMPACTS. WE WILL USE ANALYSES OF THE CLIMATOLOGY AND VARIABILITY OF UTLS TRACE GASES IN THE CONTEXT OF THE JETS AND TROPOPAUSE BASED ON AURA AND COMPLEMENTARY SATELLITE DATASETS TO ASSESS THE REPRESENTATION OF UTLS COMPOSITION IN CLIMATE MODELS AND DATA ASSIMILATION SYSTEMS. SPECIFICALLY WE WILL: TASK 1: CARRY OUT COMPREHENSIVE STUDIES OF TRACE-GAS DISTRIBUTIONS IN RELATION TO THE UTLS JETS AND THE TROPOPAUSE USING DATA FROM THE AURA INSTRUMENTS AND OTHER SATELLITE DATASETS. TASK 2: USE RESULTS FROM TASK 1 TO ASSESS THE REPRESENTATION OF UTLS OZONE AND OTHER TRACES GASES IN DATA ASSIMILATION SYSTEMS (DAS) BOTH FOR LONG-TERM REANALYSES AND SHORTER-TERM ANALYSES THAT FOCUS ON PROCESS STUDIES AND DAS IMPROVEMENTS. TASK 3: DEVELOP AND APPLY METHODS FOR EVALUATING UTLS COMPOSITION IN CHEMISTRY CLIMATE MODELS (CCMS) BY COMPARING WITH SATELLITE DATA USING THE JET/TROPOPAUSE VIEW. INFORMATION CHARACTERIZING THE RELATIONSHIPS OF MEASUREMENTS TO THE UTLS JETS AND TROPOPAUSE HAS BEEN CATALOGED FOR THE AURA MICROWAVE LIMB SOUNDER (MLS) AND HIGH RESOLUTION DYNAMICS LIMB SOUNDER (HIRDLS) INSTRUMENTS AND THE ATMOSPHERIC CHEMISTRY EXPERIMENT FOURIER TRANSFORM SPECTROMETER (ACE-FTS). SIMILAR INFORMATION WILL BE PRODUCED FOR THE AURA TROPOSPHERIC EMISSION SPECTROMETER (TES) AND OZONE MONITORING INSTRUMENT (OMI) THE ODIN OPTICAL SPECTROGRAPH AND INFRARED IMAGING SYSTEM (OSIRIS) AND THE STRATOSPHERIC GAS AND AEROSOL EXPERIMENT (SAGE) MISSIONS. ANALYSES OF CLIMATOLOGY AND VARIABILITY IN TRACE GASES IN THE CONTEXT OF THE JETS AND TROPOPAUSE WILL COMBINE THESE COMPLEMENTARY DATASETS. DAS PRODUCTS TO BE ANALYZED INCLUDE COMMONLY-USED REANALYSES AND SEVERAL RESEARCH PRODUCTS. THE VALUE OF