AI SearchOptimizing land surface model for improved soil moisture estimation : (Record no. 84133)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04143nas a2200361 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818170847.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250519s20259999th u ms t 000 eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12456275 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.WM-25-04 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Bhandari, Ashok |
| 245 10 - TITLE STATEMENT | |
| Title | Optimizing land surface model for improved soil moisture estimation : |
| Remainder of title | bridging the gap between simulation and satellite observations |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2025 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 173 leaves : |
| Other physical details | ill.+ |
| Accompanying material | 1 online |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis; |
| Volume/sequential designation | no. WM-25-04 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Eng.) - Asian Institute of Technology, 2025 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Soil moisture is a crucial hydrologic state required for water resource management in the country like Thailand, yet continuous and physically consistent estimates remain limited. Land surface models offer solution for this, but optimization of these models has been challenging due to model complexity and uncertainty. This study addresses the problem through scheme-based optimization, including updating soil texture parameter to achieve a balanced model. Full-factorial experiments governs the natural selection process through switching of six distinct land surface parametrization categories in Noah-MP v 3.6, each comprising 2-4 schemes totaling 576 experiments. Simulations were run-in high-performance computer (HPC) to identify the optimal schemes that yields the highest mean spatial skill score (e.g, KGE = 0.58, correlation = 0.74). Results revealed the spatial variability in model performance under different physics options and hence the tradeoff was considered for selection process. While the best performing scheme for soil moisture achieved the highest skill, it has led to decreased performance in evapotranspiration (ET) and terrestrial water storage anomaly (TWSA). Results from multi-variate ensemble optimization experiments (SM+TWSA+ET) demonstrated a balanced improvement, particularly in ET (correlation increased to 0.714) and TWSA (0.813), revealing impact across the physics options inherent in single-variable optimization. This variation is reflected through the under estimation of leaf area index (LAI) on wet basins and hence, is helpful for better understanding for classification of physical parameterizations on basin scale. The optimal model obtained through several experiments was useful for constructing historical databases for long term trend and drought analysis. The trend analysis showed the decline of precipitation on central and northeast basin on rainy and summer season with average of 6.35mm /wet season. However, this seasonal trend did not align with soil moisture and total water storages suggesting seasonal shifts. The probability distribution for the drought obtained from Soil moisture anomaly index (SMAI) with the long-term average from 1990 to 2023 is negatively skewed, with skewness of -0.47 with long tail on left side demonstrating the regular droughts especially on northeastern basin. These indicators were used for regional agriculture decision support especially on land suitability of economic crops like rice and spatial irrigation planning. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Soil moisture |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Environmental engineering |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Natthachet Tangdamrongsub, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shanmugam, Mohana Sundaram, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shrestha, Sangam, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | ADB Japan Scholarship Program (ADB-JSP), |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis; |
| Volume/sequential designation | no. WM-25-04 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B22142">http://203.159.5.9/ait-thesis/detail.php?q=B22142</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12456275 |
| b | mnarc |
| c | a |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 250522 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 250521 |
| First date, FD (RLIN) | m |
| -- | h |
| -- | a |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 67-Electronic Resource |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : - |
| CREATED | CREATED : 2025-05-19 |
| RECORD Id | RECORD # : i13547690 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.WM-25-04 | 18/08/2026 | 1 | 18/08/2026 | 67-Electronic Resource |