RBI · Reserve Bank of India ·

RBI Bulletin – October 2026

Distilled Policy Brief

  • Combining satellite-based night-time light data and Google Trends search behaviour improves the nowcast accuracy of quarterly Gross State Value Added (GSVA) growth compared to univariate approaches, offering real-time monitoring of state-level economies.

🎯 Prelims High-Yield Examination Points

Understand how monetary policy transmission is evaluated via Weighted Average Lending Rate (WALR) decomposition and how satellite night-time lights are used in nowcasting economic growth.

⚖️ Mains Analytical & Syllabus Linkages

Analyze the role of alternative data sources in overcoming publication lags in state-level economic accounting (GSVA) and discuss the drivers of imperfect monetary policy transmission in commercial banks.

🎯 UPSC Prelims Practice Drill

Economy

Consider the following statements regarding the methodologies used for monitoring state-level economic activity in India, as discussed in the Reserve Bank of India (RBI) Bulletin: 1. Combining satellite-based night-time light data and Google Trends search behaviour improves the nowcast accuracy of quarterly Gross State Value Added (GSVA) growth. 2. This bivariate approach offers real-time monitoring of state-level economies compared to traditional univariate approaches. Which of the statements given above is/are correct?

  • [A] 1 only
  • [B] 2 only
  • [C] Both 1 and 2
  • [D] Neither 1 nor 2
▶ Reveal Official Answer & Analytical Explanation
✓ Correct Option: [C] Both 1 and 2

According to the RBI Bulletin article 'Nowcasting State-Level Economic Activity in India with Night-Time Light and Google Trends', combining satellite-based night-time light data and Google Trends search behaviour improves the nowcast accuracy of quarterly Gross State Value Added (GSVA) growth compared to univariate approaches, providing effective real-time monitoring of state-level economies. Both statements are therefore correct.

Tark High-Yield Question Bank ⚡ Practice Full Test in Testing Arena ↗

🏛️ Historical Twin PYQ Anchor (2021)

UPSC Prelims 2021

Consider the following statements regarding the "National Clean Air Programme (NCAP)": 1. It is implemented by the Ministry of Environment, Forest and Climate Change. 2. Central Pollution Control Board acts as the sole regulatory executive body.

Forensic Anchor: Cabinet Allocation of Business Rules & NCAP Framework
Examiner Trap Takeaway: UPSC swapped Central Pollution Control Board role with State Pollution Control Boards for state-level monitoring.

📚 Static Syllabus & Constitutional Linkages

Monetary Policy Pass-Through & WALR: The mechanism through which policy rate changes by the central bank alter commercial bank lending rates (WALR, MCLR, external benchmark rates) and credit supply.
National Income Accounting & Data Lag: Methods of calculating Gross Value Added (GVA) at national and sub-national levels, structural delays in official statistical releases, and the role of high-frequency proxy variables.